# EDGAR Filing Document

**Accession Number:** 0000100334
**File Stem:** 0001193125-26-129587
**Filing Date:** 2026-3
**Character Count:** 43439
**Document Hash:** 8cf3dfabc2f675734d1d26aed12a4772
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-129587.hdr.sgml**: 20260330

**ACCESSION NUMBER**: 0001193125-26-129587

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260131

**FILED AS OF DATE**: 20260330

**DATE AS OF CHANGE**: 20260327

**PERIOD START**: 20261031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICAN CENTURY MUTUAL FUNDS, INC.
- **CENTRAL INDEX KEY:** 0000100334

**ORGANIZATION NAME:**
- **EIN:** 446006315
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-00816
- **FILM NUMBER:** 26808915

**BUSINESS ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111
- **BUSINESS PHONE:** 816-531-5575

**MAIL ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICAN CENTURY MUTUAL FUNDS INC
- **DATE OF NAME CHANGE:** 19970107

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TWENTIETH CENTURY INVESTORS INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### ULTRA FUND (Series ID: S000006195)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000017060 | INVESTOR CLASS | TWCUX           |
| C000017061 | A CLASS        | TWUAX           |
| C000017062 | I CLASS        | TWUIX           |
| C000017063 | C CLASS        | TWCCX           |
| C000017064 | R CLASS        | AULRX           |
| C000131598 | R6 CLASS       | AULDX           |
| C000189739 | R5 CLASS       | AULGX           |
| C000189740 | Y CLASS        | AULYX           |
| C000214991 | G Class        | AULNX           |

## Nport-Ex

**American Century Investments**<sup>®</sup>

**Quarterly Portfolio Holdings**

**Ultra Fund**<sup>®</sup>

**January 31, 2026**

------

---

| |
|:---|
| **<u>Ultra Fund - Schedule of Investments</u>** |
| **JANUARY 31, 2026 (UNAUDITED)** |

---

---

| | | |
|:---|:---|:---|
|  | **Shares** | **Value ($)** |
| **COMMON STOCKS — 99.9%** |  |  |
| **Aerospace and Defense — 1.0%** |  |  |
| HEICO Corp. | 209000 | 69160190 |
| Howmet Aerospace, Inc. | 928000 | 193098240 |
|  |  | 262258430 |
| **Automobiles — 4.6%** |  |  |
| Tesla, Inc.<sup>(1)</sup> | 2792000 | 1201704720 |
| **Biotechnology — 2.7%** |  |  |
| Alnylam Pharmaceuticals, Inc.<sup>(1)</sup> | 747000 | 252530820 |
| Ascendis Pharma AS, ADR<sup>(1)</sup> | 664000 | 150130400 |
| Regeneron Pharmaceuticals, Inc. | 225000 | 166826250 |
| Vertex Pharmaceuticals, Inc.<sup>(1)</sup> | 275000 | 129222500 |
|  |  | 698709970 |
| **Broadline Retail — 7.8%** |  |  |
| Amazon.com, Inc.<sup>(1)</sup> | 8534000 | 2042186200 |
| **Building Products — 0.9%** |  |  |
| Advanced Drainage Systems, Inc. | 901000 | 136988040 |
| Johnson Controls International PLC | 940000 | 112104400 |
|  |  | 249092440 |
| **Capital Markets — 1.8%** |  |  |
| Interactive Brokers Group, Inc., Class A | 3740000 | 280051200 |
| MSCI, Inc. | 184000 | 112096480 |
| Tradeweb Markets, Inc., Class A | 767000 | 79054690 |
|  |  | 471202370 |
| **Chemicals — 0.9%** |  |  |
| Ecolab, Inc. | 811000 | 228693890 |
| **Commercial Services and Supplies — 0.4%** |  |  |
| Cintas Corp. | 300000 | 57417000 |
| Copart, Inc.<sup>(1)</sup> | 1254000 | 50887320 |
|  |  | 108304320 |
| **Communications Equipment — 0.2%** |  |  |
| Ciena Corp.<sup>(1)</sup> | 226000 | 56909060 |
| **Consumer Staples Distribution & Retail — 2.2%** |  |  |
| Costco Wholesale Corp. | 608000 | 571672000 |
| **Electric Utilities — 0.2%** |  |  |
| Constellation Energy Corp. | 186000 | 52206480 |
| **Electrical Equipment — 1.5%** |  |  |
| Acuity, Inc. | 492000 | 152146080 |
| Vertiv Holdings Co., Class A | 1362000 | 253577160 |
|  |  | 405723240 |
| **Electronic Equipment, Instruments and Components — 1.2%** |  |  |
| Amphenol Corp., Class A | 2154000 | 310348320 |
| **Entertainment — 2.2%** |  |  |
| Netflix, Inc.<sup>(1)</sup> | 7010000 | 585264900 |
| **Financial Services — 3.8%** |  |  |
| Mastercard, Inc., Class A | 1782786 | 960547269 |
| Visa, Inc., Class A | 126000 | 40550580 |
|  |  | 1001097849 |
| **Health Care Equipment and Supplies — 3.0%** |  |  |
| IDEXX Laboratories, Inc.<sup>(1)</sup> | 257000 | 172308220 |
| Insulet Corp.<sup>(1)</sup> | 710000 | 181625100 |

---

------

---

| | | |
|:---|:---|:---|
| Intuitive Surgical, Inc.<sup>(1)</sup> | 873981 | 440678700 |
|  |  | 794612020 |
| **Hotels, Restaurants and Leisure — 1.5%** |  |  |
| Booking Holdings, Inc. | 19000 | 95034960 |
| Chipotle Mexican Grill, Inc.<sup>(1)</sup> | 2761000 | 107320070 |
| Viking Holdings Ltd.<sup>(1)</sup> | 1130000 | 81529500 |
| Wingstop, Inc. | 446000 | 118381780 |
|  |  | 402266310 |
| **Insurance — 0.2%** |  |  |
| Arthur J Gallagher & Co. | 177000 | 44138490 |
| **Interactive Media and Services — 14.6%** |  |  |
| Alphabet, Inc., Class A | 4613455 | 1559347790 |
| Alphabet, Inc., Class C | 4009000 | 1357166770 |
| Meta Platforms, Inc., Class A | 1308000 | 937182000 |
|  |  | 3853696560 |
| **IT Services — 2.0%** |  |  |
| Cloudflare, Inc., Class A<sup>(1)</sup> | 1247000 | 221155450 |
| Okta, Inc.<sup>(1)</sup> | 1183000 | 99939840 |
| Snowflake, Inc., Class A<sup>(1)</sup> | 1072000 | 206574400 |
|  |  | 527669690 |
| **Machinery — 1.2%** |  |  |
| Donaldson Co., Inc. | 889000 | 90624660 |
| Nordson Corp. | 228000 | 62592840 |
| Westinghouse Air Brake Technologies Corp. | 705000 | 162248700 |
|  |  | 315466200 |
| **Oil, Gas and Consumable Fuels — 0.2%** |  |  |
| EOG Resources, Inc. | 599000 | 67165870 |
| **Pharmaceuticals — 1.5%** |  |  |
| Eli Lilly & Co. | 374000 | 387894100 |
| **Professional Services — 0.2%** |  |  |
| Planet Labs PBC<sup>(1)</sup> | 2529000 | 63149130 |
| **Semiconductors and Semiconductor Equipment — 23.2%** |  |  |
| Analog Devices, Inc. | 1020000 | 317097600 |
| Applied Materials, Inc. | 1384000 | 446090880 |
| ASML Holding NV | 263000 | 377117069 |
| Broadcom, Inc. | 2784000 | 922339200 |
| NVIDIA Corp. | 21097000 | 4032269610 |
|  |  | 6094914359 |
| **Software — 12.6%** |  |  |
| AppLovin Corp., Class A<sup>(1)</sup> | 100000 | 47311000 |
| Datadog, Inc., Class A<sup>(1)</sup> | 1506000 | 194755920 |
| Docusign, Inc.<sup>(1)</sup> | 986000 | 51804440 |
| Dynatrace, Inc.<sup>(1)</sup> | 1608000 | 61248720 |
| Fair Isaac Corp.<sup>(1)</sup> | 186000 | 272149620 |
| Microsoft Corp. | 3909000 | 1682003610 |
| Oracle Corp. | 1844000 | 303485520 |
| Palantir Technologies, Inc., Class A<sup>(1)</sup> | 1301000 | 190713590 |
| Salesforce, Inc. | 272000 | 57742880 |
| Synopsys, Inc.<sup>(1)</sup> | 428000 | 199069220 |
| Zscaler, Inc.<sup>(1)</sup> | 1220000 | 244012200 |
|  |  | 3304296720 |
| **Technology Hardware, Storage and Peripherals — 8.3%** |  |  |
| Apple, Inc. | 8430950 | 2187662906 |
| **TOTAL COMMON STOCKS**<br>(Cost $7,486,893,032) |  | **26288306544** |

---

------

---

| | | |
|:---|:---|:---|
| **RIGHTS — 0.0%** |  |  |
| **Health Care Equipment and Supplies — 0.0%** |  |  |
| ABIOMED, Inc.<sup>(1)</sup><br>(Cost $286,967) | 281340 | **286967** |
| **SHORT-TERM INVESTMENTS — 0.1%** |  |  |
| **Money Market Funds — 0.0%** |  |  |
| State Street Institutional U.S. Government Money Market Fund, Premier Class | 89826 | 89826 |
| **Repurchase Agreements — 0.1%** |  |  |
| Fixed Income Clearing Corp., (collateralized by various U.S. Treasury obligations, 2.75%, 7/31/27, valued at $31,114,254), at 3.66%, dated 1/30/26, due 2/2/26 (Delivery value $30,513,304) |  | 30504000 |
| **TOTAL SHORT-TERM INVESTMENTS**<br>(Cost $30,593,826) |  | **30593826** |
| **TOTAL INVESTMENT SECURITIES — 100.0%**<br>(Cost $7,517,773,825) |  | **26319187337** |
| **OTHER ASSETS AND LIABILITIES — 0.0%** |  | **(12104158)** |
| **TOTAL NET ASSETS — 100.0%** |  | $**26307083179** |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** | **FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS** |
| **Currency Purchased** | **Currency Purchased** | **Currency Sold** | **Currency Sold** | **Counterparty** | **Settlement Date** | **Unrealized**<br>**Appreciation**<br>**(Depreciation)** |
| JPY | 1469993000 | USD | 9446060 | Morgan Stanley & Co. LLC | 3/27/26 | $94904 |
| JPY | 494445000 | USD | 3179668 | Morgan Stanley & Co. LLC | 3/27/26 | 29519 |
| JPY | 236029500 | USD | 1515152 | Morgan Stanley & Co. LLC | 3/27/26 | 16793 |
| USD | 14321392 | JPY | 2200467500 | Morgan Stanley & Co. LLC | 3/27/26 | 39296 |
|  |  |  |  |  |  | $180512 |

---

---

| | | |
|:---|:---|:---|
| **NOTES TO SCHEDULE OF INVESTMENTS** | **NOTES TO SCHEDULE OF INVESTMENTS** | **NOTES TO SCHEDULE OF INVESTMENTS** |
| ADR | – | American Depositary Receipt |
| JPY | – | Japanese Yen |
| USD | – | United States Dollar |

---

(1)Non-income producing.

------

**SUPPLEMENTARY NOTES TO SCHEDULE OF INVESTMENTS**

**1. Investment Valuations**

The fund determines the fair value of its investments and computes its net asset value (NAV) per share at the close of regular trading (usually 4 p.m. Eastern time) on the New York Stock Exchange (NYSE) on each day the NYSE is open. The value of investments of the fund is determined by American Century Investment Management, Inc. (ACIM) (the investment advisor), as the valuation designee, pursuant to its valuation policies and procedures. The Board of Directors oversees the valuation designee and reviews its valuation policies and procedures at least annually.

Equity securities that are listed or traded on a domestic securities exchange are valued at the last reported sales price or at the official closing price as provided by the exchange. Equity securities traded on foreign securities exchanges are generally valued at the closing price of such securities on the exchange where primarily traded or at the close of the NYSE, if that is earlier. If no last sales price is reported, or if local convention or regulation so provides, the mean of the latest bid and asked prices may be used. Securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official closing price.

Open-end management investment companies are valued at the reported NAV per share. Repurchase agreements are valued at cost, which approximates fair value. Forward foreign currency exchange contracts are valued at the mean of the appropriate forward exchange rate at the close of the NYSE as provided by an independent pricing service.

If the valuation designee determines that the market price for a portfolio security is not readily available or is believed by the valuation designee to be unreliable, such security is valued at fair value as determined in good faith by the valuation designee, in accordance with its policies and procedures. Circumstances that may cause a fund to determine that market quotations are not available or reliable include, but are not limited to: when there is a significant event subsequent to the market quotation; trading in a security has been halted during the trading day; or trading in a security is insufficient or did not take place due to a closure or holiday.

The valuation designee monitors for significant events occurring after the close of an investment's primary exchange but before the NAV per share is determined. Significant events may include, but are not limited to: corporate announcements and transactions; regulatory news, governmental action and political unrest that could impact a specific investment or an investment sector; or armed conflicts, natural disasters and similar events that could affect investments in a specific country or region. The valuation designee also monitors for significant fluctuations between domestic and foreign markets, as evidenced by the U.S. market or such other indicators that it deems appropriate. The valuation designee may apply a model-derived factor to the closing price of equity securities traded on foreign securities exchanges. The factor is based on observable market data as provided by an independent pricing service.

**2. Fair Value Measurements**

The fund's investments valuation process is based on several considerations and may use multiple inputs to determine the fair value of the investments held by the fund. In conformity with accounting principles generally accepted in the United States of America, the inputs used to determine a valuation are classified into three broad levels.

• Level 1 valuation inputs consist of unadjusted quoted prices in an active market for identical investments.

• Level 2 valuation inputs consist of direct or indirect observable market data (including quoted prices for comparable investments, evaluations of subsequent market events, interest rates, prepayment speeds, credit risk, etc.). These inputs also consist of quoted prices for identical investments initially expressed in local currencies that are adjusted through translation into U.S. dollars.

• Level 3 valuation inputs consist of unobservable data (including a fund's own assumptions).

The level classification is based on the lowest level input that is significant to the fair valuation measurement. The valuation inputs are not necessarily an indication of the risks associated with investing in these securities or other financial instruments.

The following is a summary of the level classifications as of period end. The Schedule of Investments provides additional information on the fund's portfolio holdings.

---

| | | | |
|:---|:---|:---|:---|
| | **Level 1** | **Level 2** | **Level 3** |
| **Assets** | **Assets** | **Assets** | **Assets** |
| **Investment Securities** | **Investment Securities** | **Investment Securities** | **Investment Securities** |
| Common Stocks | $25911189475 | $377117069 |  |
| Rights | 286967 |  |  |
| Short-Term Investments | 89826 | 30504000 |  |
|  | $25911566268 | $407621069 |  |
| **Other Financial Instruments** | **Other Financial Instruments** | **Other Financial Instruments** | **Other Financial Instruments** |
| Forward Foreign Currency Exchange Contracts |  | $180512 |  |

---

*This schedule of investments provides information about the fund's portfolio holdings as of the date on the schedule. It is unaudited, and American Century Investments assumes no obligation to update or supplement the schedule to reflect subsequent changes. More information is available in the fund's most recent annual or semiannual financial statements.*

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** American Century Mutual Funds, Inc.

- **b. Investment Company Act file number:** 811-00816

- **c. CIK number of Registrant:** 0000100334

- **d. LEI of Registrant:** 549300DMFK0SMVLOE939

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 4500 Main St

  - **City:** Kansas City

  - **State:** MO

  - **Foreign country:** US

  - **Zip / Postal Code:** 64111

  - **Telephone number:** 816-531-5575

**Item A.2. Information about the Series.**

- **a. Name of Series:** Ultra Fund

- **b. EDGAR series identifier (if any):** S000006195

- **c. LEI of Series:** F6OVJ18MFLNHYYI4ZV69

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2026-10-31

- **b. Date as of which information is reported:** 2026-01-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $26332052411.88

**Total Liabilities:** $19376572.96

**Net Assets:** $26312675838.92

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000017060 | -1.93%               | -1.32%               | -0.53%               |
| Class ID C000017061 | -1.95%               | -1.34%               | -0.55%               |
| Class ID C000017062 | -1.92%               | -1.30%               | -0.51%               |
| Class ID C000017063 | -2.01%               | -1.41%               | -0.61%               |
| Class ID C000017064 | -1.97%               | -1.35%               | -0.58%               |
| Class ID C000131598 | -1.91%               | -1.28%               | -0.51%               |
| Class ID C000189739 | -1.92%               | -1.30%               | -0.51%               |
| Class ID C000189740 | -1.90%               | -1.29%               | -0.51%               |
| Class ID C000214991 | -1.87%               | -1.24%               | -0.46%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $401885699.60            | $-938547242.55                             |
| Month 2  | $494053413.31            | $-846579715.50                             |
| Month 3  | $141826629.48            | $-267823058.47                             |

### Schedule of Portfolio Investments

| Name                                                       | Title                                                      | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)    | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| MORGAN STANLEY CAPITAL SERVICES INC                        | BOUGHT JPY/SOLD USD                                        | CUSIP: N/A<br>LEI: I7331LVCZKQKX5T7XV54       | N/A              | DFE              | CORP              | N/A       |         1 | NC      | $94904.02      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| MORGAN STANLEY CAPITAL SERVICES INC                        | BOUGHT JPY/SOLD USD                                        | CUSIP: N/A<br>LEI: I7331LVCZKQKX5T7XV54       | N/A              | DFE              | CORP              | N/A       |         1 | NC      | $29518.96      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| MORGAN STANLEY CAPITAL SERVICES INC                        | BOUGHT JPY/SOLD USD                                        | CUSIP: N/A<br>LEI: I7331LVCZKQKX5T7XV54       | N/A              | DFE              | CORP              | N/A       |         1 | NC      | $16793.14      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| MORGAN STANLEY CAPITAL SERVICES INC                        | SOLD JPY/BOUGHT USD                                        | CUSIP: N/A<br>LEI: I7331LVCZKQKX5T7XV54       | N/A              | DFE              | CORP              | N/A       |         1 | NC      | $39295.77      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| ACUITY BRANDS                                              | Acuity Inc                                                 | CUSIP: 00508Y102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    492000 | NS      | $152146080.00  | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Drainage Systems Inc                              | Advanced Drainage Systems Inc                              | CUSIP: 00790R104<br>LEI: 6QQTOZ5MF5DHM7K92I60 | Long             | EC               | CORP              | US        |    901000 | NS      | $136988040.00  | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Alnylam Pharmaceuticals Inc                                | Alnylam Pharmaceuticals Inc                                | CUSIP: 02043Q107<br>LEI: 529900S3ZI14OWRJII50 | Long             | EC               | CORP              | US        |    747000 | NS      | $252530820.00  | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                                               | Alphabet Inc-CL C                                          | CUSIP: 02079K107<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |   4009000 | NS      | $1357166770.00 | 5.16%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                                               | Alphabet Inc                                               | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |   4613455 | NS      | $1559347790.00 | 5.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                                             | Amazon.com Inc                                             | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |   8534000 | NS      | $2042186200.00 | 7.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Amphenol Corp                                              | Amphenol Corp                                              | CUSIP: 032095101<br>LEI: 549300D3L3G0R4U4VT04 | Long             | EC               | CORP              | US        |   2154000 | NS      | $310348320.00  | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Analog Devices Inc                                         | Analog Devices Inc                                         | CUSIP: 032654105<br>LEI: GYVOE5EZ4GDAVTU4CQ61 | Long             | EC               | CORP              | US        |   1020000 | NS      | $317097600.00  | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                                                  | Apple Inc                                                  | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |   8430950 | NS      | $2187662906.00 | 8.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Applied Materials Inc                                      | Applied Materials Inc                                      | CUSIP: 038222105<br>LEI: 41BNNE1AFPNAZELZ6K07 | Long             | EC               | CORP              | US        |   1384000 | NS      | $446090880.00  | 1.70%             |  |  |  | No            |                  1 | On Loan: No      |
| AppLovin Corp                                              | AppLovin Corp                                              | CUSIP: 03831W108<br>LEI: 549300LLVXMUAOL3SQ07 | Long             | EC               | CORP              | US        |    100000 | NS      | $47311000.00   | 0.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Ascendis Pharma A/S                                        | Ascendis Pharma A/S                                        | CUSIP: 04351P101<br>LEI: 549300B66JN3W3J8GH73 | Long             | EC               | CORP              | DK        |    664000 | NS      | $150130400.00  | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Booking Holdings Inc                                       | Booking Holdings Inc                                       | CUSIP: 09857L108<br>LEI: FXM8FAOHMYDIPD38UZ17 | Long             | EC               | CORP              | US        |     19000 | NS      | $95034960.00   | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadcom Inc                                               | Broadcom Inc                                               | CUSIP: 11135F101<br>LEI: 549300WV6GIDOZJTV909 | Long             | EC               | CORP              | US        |   2784000 | NS      | $922339200.00  | 3.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Chipotle Mexican Grill Inc                                 | Chipotle Mexican Grill Inc                                 | CUSIP: 169656105<br>LEI: 529900REP5VGTPCP1J71 | Long             | EC               | CORP              | US        |   2761000 | NS      | $107320070.00  | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Ciena Corp                                                 | Ciena Corp                                                 | CUSIP: 171779309<br>LEI: W0CZ7N0GH8UIGXDM1H41 | Long             | EC               | CORP              | US        |    226000 | NS      | $56909060.00   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Cintas Corp                                                | Cintas Corp                                                | CUSIP: 172908105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    300000 | NS      | $57417000.00   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Cloudflare Inc                                             | Cloudflare Inc                                             | CUSIP: 18915M107<br>LEI: 5493007DY18BGNLDWU14 | Long             | EC               | CORP              | US        |   1247000 | NS      | $221155450.00  | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Constellation Energy Corp                                  | Constellation Energy Corp                                  | CUSIP: 21037T109<br>LEI: 549300F8Y20RYGNGV346 | Long             | EC               | CORP              | US        |    186000 | NS      | $52206480.00   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Tradeweb Markets Inc                                       | Tradeweb Markets Inc                                       | CUSIP: 892672106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    767000 | NS      | $79054690.00   | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertex Pharmaceuticals Inc                                 | Vertex Pharmaceuticals Inc                                 | CUSIP: 92532F100<br>LEI: 54930015RAQRRZ5ZGJ91 | Long             | EC               | CORP              | US        |    275000 | NS      | $129222500.00  | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertiv Holdings Co                                         | Vertiv Holdings Co                                         | CUSIP: 92537N108<br>LEI: 549300KTTIRAOGXCRV69 | Long             | EC               | CORP              | US        |   1362000 | NS      | $253577160.00  | 0.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Visa Inc                                                   | Visa Inc                                                   | CUSIP: 92826C839<br>LEI: 549300JZ4OKEHW3DPJ59 | Long             | EC               | CORP              | US        |    126000 | NS      | $40550580.00   | 0.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Donaldson Co Inc                                           | Donaldson Co Inc                                           | CUSIP: 257651109<br>LEI: OZE6KXY9QQPR8EJ8WL20 | Long             | EC               | CORP              | US        |    889000 | NS      | $90624660.00   | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Dynatrace Inc                                              | Dynatrace Inc                                              | CUSIP: 268150109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1608000 | NS      | $61248720.00   | 0.23%             |  |  |  | No            |                  1 | On Loan: No      |
| EOG Resources Inc                                          | EOG Resources Inc                                          | CUSIP: 26875P101<br>LEI: XWTZDRYZPBUHIQBKDB46 | Long             | EC               | CORP              | US        |    599000 | NS      | $67165870.00   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Ecolab Inc                                                 | Ecolab Inc                                                 | CUSIP: 278865100<br>LEI: 82DYEISM090VG8LTLS26 | Long             | EC               | CORP              | US        |    811000 | NS      | $228693890.00  | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                                         | Meta Platforms Inc                                         | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |   1308000 | NS      | $937182000.00  | 3.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Fair Isaac Corp                                            | Fair Isaac Corp                                            | CUSIP: 303250104<br>LEI: RI6HET5SJUEY30V1PS26 | Long             | EC               | CORP              | US        |    186000 | NS      | $272149620.00  | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Arthur J Gallagher & Co                                    | Arthur J Gallagher & Co                                    | CUSIP: 363576109<br>LEI: 54930049QLLMPART6V29 | Long             | EC               | CORP              | US        |    177000 | NS      | $44138490.00   | 0.17%             |  |  |  | No            |                  1 | On Loan: No      |
| HEICO Corp                                                 | HEICO Corp                                                 | CUSIP: 422806109<br>LEI: 529900O1DTDLCJ7L0I14 | Long             | EC               | CORP              | US        |    209000 | NS      | $69160190.00   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Howmet Aerospace Inc                                       | Howmet Aerospace Inc                                       | CUSIP: 443201108<br>LEI: 549300HO5WFZUT5N2T22 | Long             | EC               | CORP              | US        |    928000 | NS      | $193098240.00  | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| IDEXX Laboratories Inc                                     | IDEXX Laboratories Inc                                     | CUSIP: 45168D104<br>LEI: OGMTXK0LUU1HKV2P0J84 | Long             | EC               | CORP              | US        |    257000 | NS      | $172308220.00  | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Insulet Corp                                               | Insulet Corp                                               | CUSIP: 45784P101<br>LEI: 549300TZTYD2PYN92D43 | Long             | EC               | CORP              | US        |    710000 | NS      | $181625100.00  | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Interactive Brokers Group Inc                              | Interactive Brokers Group Inc                              | CUSIP: 45841N107<br>LEI: 5493004DT6DCDUZNDM53 | Long             | EC               | CORP              | US        |   3740000 | NS      | $280051200.00  | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuitive Surgical Inc                                     | Intuitive Surgical Inc                                     | CUSIP: 46120E602<br>LEI: 54930052SRG011710797 | Long             | EC               | CORP              | US        |    873981 | NS      | $440678699.82  | 1.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Eli Lilly & Co                                             | Eli Lilly & Co                                             | CUSIP: 532457108<br>LEI: FRDRIPF3EKNDJ2CQJL29 | Long             | EC               | CORP              | US        |    374000 | NS      | $387894100.00  | 1.47%             |  |  |  | No            |                  1 | On Loan: No      |
| MSCI Inc                                                   | MSCI Inc                                                   | CUSIP: 55354G100<br>LEI: 549300HTIN2PD78UB763 | Long             | EC               | CORP              | US        |    184000 | NS      | $112096480.00  | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Westinghouse Air Brake Technologies Corp                   | Westinghouse Air Brake Technologies Corp                   | CUSIP: 929740108<br>LEI: 06BTX5UWZD0GQ5N5Y745 | Long             | EC               | CORP              | US        |    705000 | NS      | $162248700.00  | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Wingstop Inc                                               | Wingstop Inc                                               | CUSIP: 974155103<br>LEI: 549300SSH3F8HPIM3Q47 | Long             | EC               | CORP              | US        |    446000 | NS      | $118381780.00  | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Zscaler Inc                                                | Zscaler Inc                                                | CUSIP: 98980G102<br>LEI: 529900MZ0RTK1BWRNF46 | Long             | EC               | CORP              | US        |   1220000 | NS      | $244012200.00  | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| ASML Holding NV                                            | ASML Holding NV                                            | CUSIP: N/A<br>LEI: 724500Y6DUVHQD6OXN27       | Long             | EC               | CORP              | NL        |    263000 | NS      | $377117069.60  | 1.43%             |  |  |  | No            |                  2 | On Loan: No      |
| Johnson Controls International plc                         | Johnson Controls International plc                         | CUSIP: G51502105<br>LEI: 549300XQ6S1GYKGBL205 | Long             | EC               | CORP              | US        |    940000 | NS      | $112104400.00  | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Viking Holdings Ltd                                        | Viking Holdings Ltd                                        | CUSIP: G93A5A101<br>LEI: N/A                  | Long             | EC               | CORP              | BM        |   1130000 | NS      | $81529500.00   | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| ABIOMED Inc                                                | ABIOMED Inc                                                | CUSIP: 003CVR016<br>LEI: 5493001EZN4ZTB4Z5887 | Long             | EC               | CORP              | US        |    281340 | NS      | $286966.80     | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                                                 | Copart Inc                                                 | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |   1254000 | NS      | $50887320.00   | 0.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Costco Wholesale Corp                                      | Costco Wholesale Corp                                      | CUSIP: 22160K105<br>LEI: 29DX7H14B9S6O3FD6V18 | Long             | EC               | CORP              | US        |    608000 | NS      | $571672000.00  | 2.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Datadog Inc                                                | Datadog Inc                                                | CUSIP: 23804L103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1506000 | NS      | $194755920.00  | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Docusign Inc                                               | Docusign Inc                                               | CUSIP: 256163106<br>LEI: 549300Q7PVDWRZ39JG09 | Long             | EC               | CORP              | US        |    986000 | NS      | $51804440.00   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| State Street Institutional US Government Money Market Fund | State Street Institutional US Government Money Market Fund | CUSIP: 857492706<br>LEI: 549300BZ5TGIFZUZDZ37 | Long             | STIV             | RF                | US        |     89826 | NS      | $89825.85      | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| State Street Bank & Trust Co                               | Fixed Income Clearing Corp 3.66 02/02/2026                 | CUSIP: RPEN3EF02<br>LEI: 571474TGEMMWANRLN572 | Long             | RA               | CORP              | US        |  30504000 | PA      | $30504000.00   | 0.12%             | 2026-02-02      | Fixed         | 3.66%                 | No            |                  2 | On Loan: No      |
| Mastercard Inc                                             | Mastercard Inc                                             | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |   1782786 | NS      | $960547268.94  | 3.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                                             | Microsoft Corp                                             | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |   3909000 | NS      | $1682003610.00 | 6.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Netflix Inc                                                | Netflix Inc                                                | CUSIP: 64110L106<br>LEI: 549300Y7VHGU0I7CE873 | Long             | EC               | CORP              | US        |   7010000 | NS      | $585264900.00  | 2.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Nordson Corp                                               | Nordson Corp                                               | CUSIP: 655663102<br>LEI: 14OS6Q5N55N95WM84M53 | Long             | EC               | CORP              | US        |    228000 | NS      | $62592840.00   | 0.24%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                                                | NVIDIA Corp                                                | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |  21097000 | NS      | $4032269610.00 | 15.32%            |  |  |  | No            |                  1 | On Loan: No      |
| Okta Inc                                                   | Okta Inc                                                   | CUSIP: 679295105<br>LEI: 549300N8J06I8MRHU620 | Long             | EC               | CORP              | US        |   1183000 | NS      | $99939840.00   | 0.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Oracle Corp                                                | Oracle Corp                                                | CUSIP: 68389X105<br>LEI: 1Z4GXXU7ZHVWFCD8TV52 | Long             | EC               | CORP              | US        |   1988000 | NS      | $327185040.00  | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Palantir Technologies Inc                                  | Palantir Technologies Inc                                  | CUSIP: 69608A108<br>LEI: 549300UVN46B3BBDHO85 | Long             | EC               | CORP              | US        |   1301000 | NS      | $190713590.00  | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Planet Labs PBC                                            | Planet Labs PBC                                            | CUSIP: 72703X106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1989000 | NS      | $49665330.00   | 0.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Regeneron Pharmaceuticals Inc                              | Regeneron Pharmaceuticals Inc                              | CUSIP: 75886F107<br>LEI: 549300RCBFWIRX3HYQ56 | Long             | EC               | CORP              | US        |    225000 | NS      | $166826250.00  | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| salesforce.com Inc                                         | Salesforce Inc                                             | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |    272000 | NS      | $57742880.00   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Snowflake Inc                                              | Snowflake Inc                                              | CUSIP: 833445109<br>LEI: 254900CJNSY1K7T53Z16 | Long             | EC               | CORP              | US        |   1072000 | NS      | $206574400.00  | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Synopsys Inc                                               | Synopsys Inc                                               | CUSIP: 871607107<br>LEI: QG7T915N9S0NY5UKNE63 | Long             | EC               | CORP              | US        |    428000 | NS      | $199069220.00  | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Tesla Inc                                                  | Tesla Inc                                                  | CUSIP: 88160R101<br>LEI: 54930043XZGB27CTOV49 | Long             | EC               | CORP              | US        |   2792000 | NS      | $1201704720.00 | 4.57%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-03-27

**Name of Applicant:** American Century Mutual Funds, Inc.

**Signature:** Amy R. Bitter

**Name of Signer:** Amy R. Bitter

**Title:** Assistant Treasurer