# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001752724-23-029954
**Filing Date:** 2023-2
**Character Count:** 14856
**Document Hash:** 84bee0e34b20bbfb7e2bd799bab64dbf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-029954.hdr.sgml**: 20230221

**ACCESSION NUMBER**: 0001752724-23-029954

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230221

**DATE AS OF CHANGE**: 20230221

**PERIOD START**: 20221231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WILLIAM BLAIR FUNDS
- **CENTRAL INDEX KEY:** 0000822632
- **IRS NUMBER:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05344
- **FILM NUMBER:** 23645623

**BUSINESS ADDRESS:**
- **STREET 1:** 150 NORTH RIVERSIDE PLAZA
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3123648000

**MAIL ADDRESS:**
- **STREET 1:** 150 NORTH RIVERSIDE PLAZA
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WILLIAM BLAIR MUTUAL FUNDS INC
- **DATE OF NAME CHANGE:** 19960112

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLAIR WILLIAM READY RESERVES INC
- **DATE OF NAME CHANGE:** 19920316

## Series and Classes Contracts Data

### William Blair Large Cap Growth Fund (Series ID: S000008601)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000023538 | Class N      | LCGNX           |
| C000023539 | Class I      | LCGFX           |
| C000211719 | Class R6     | LCGJX           |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** WILLIAM BLAIR FUNDS

- **b. Investment Company Act file number:** 811-05344

- **c. CIK number of Registrant:** 0000822632

- **d. LEI of Registrant:** SNQR0U5FDV8EZZX4W051

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

  - **Street Address 1:** 150 NORTH RIVERSIDE PLAZA

  - **City:** CHICAGO

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60606

  - **Telephone number:** 312-364-8000

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

- **a. Name of Series:** William Blair Large Cap Growth Fund

- **b. EDGAR series identifier (if any):** S000008601

- **c. LEI of Series:** 549300RO7YVMUSCG4F70

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

- **a. Date of fiscal year-end:** 2022-12-31

- **b. Date as of which information is reported:** 2022-12-31

**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:** $1073198493.90

**Total Liabilities:** $831092.61

**Net Assets:** $1072367401.29

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000211719 | 4.83%                | 6.75%                | -6.89%               |
| Class ID C000023539 | 4.77%                | 6.80%                | -6.93%               |
| Class ID C000023538 | 4.79%                | 6.74%                | -6.92%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-4104157.80             | $53046397.67                               |
| Month 2  | $3955515.64              | $67525433.37                               |
| Month 3  | $-883913.16              | $-78344609.77                              |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Salesforce Inc                | Salesforce Inc                | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |    151300 | NS      | $20060867.00  | 1.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuit Inc                    | Intuit Inc                    | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |     80820 | NS      | $31456760.40  | 2.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Accenture PLC                 | Accenture PLC                 | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |    136510 | NS      | $36426328.40  | 3.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Chipotle Mexican Grill Inc    | Chipotle Mexican Grill Inc    | CUSIP: 169656105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     12370 | NS      | $17163251.30  | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| UnitedHealth Group Inc        | UnitedHealth Group Inc        | CUSIP: 91324P102<br>LEI: 549300GHBMY8T5GXDE41 | Long             | EC               | CORP              | US        |    112670 | NS      | $59735380.60  | 5.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Costco Wholesale Corp         | Costco Wholesale Corp         | CUSIP: 22160K105<br>LEI: 29DX7H14B9S6O3FD6V18 | Long             | EC               | CORP              | US        |    103010 | NS      | $47024065.00  | 4.39%             |  |  |  | No            |                  1 | On Loan: No      |
| NIKE Inc                      | NIKE Inc                      | CUSIP: 654106103<br>LEI: 787RXPR0UX0O0XUXPZ81 | Long             | EC               | CORP              | US        |    279900 | NS      | $32751099.00  | 3.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Linde PLC                     | Linde PLC                     | CUSIP: 000000000<br>LEI: 8945002PAZHZLBGKGF02 | Long             | EC               | CORP              | IE        |     92510 | NS      | $30174911.80  | 2.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Fixed Income Clearing Corp    | FIXED INC CLEARING CORP.REPO  | CUSIP: 000000000<br>LEI: 549300H47WTHXPU08X20 | Long             | RA               | CORP              | US        |   9810690 | PA      | $9810690.19   | 0.91%             |  |  |  | No            |                  2 | On Loan: No      |
| Marriott International Inc/MD | Marriott International Inc/MD | CUSIP: 571903202<br>LEI: 225YDZ14ZO8E1TXUSU86 | Long             | EC               | CORP              | US        |    138930 | NS      | $20685287.70  | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Micro Devices Inc    | Advanced Micro Devices Inc    | CUSIP: 007903107<br>LEI: R2I72C950HOYXII45366 | Long             | EC               | CORP              | US        |    160788 | NS      | $10414238.76  | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Texas Instruments Inc         | Texas Instruments Inc         | CUSIP: 882508104<br>LEI: WDJNR2L6D8RWOEB8T652 | Long             | EC               | CORP              | US        |     89120 | NS      | $14724406.40  | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| PayPal Holdings Inc           | PayPal Holdings Inc           | CUSIP: 70450Y103<br>LEI: 5493005X2GO78EFZ3E94 | Long             | EC               | CORP              | US        |    381560 | NS      | $27174703.20  | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                  | Alphabet Inc                  | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |    755660 | NS      | $66671881.80  | 6.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Estee Lauder Cos Inc/The      | Estee Lauder Cos Inc/The      | CUSIP: 518439104<br>LEI: 549300VFZ8XJ9NUPU221 | Long             | EC               | CORP              | US        |     90310 | NS      | $22406814.10  | 2.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Zoetis Inc                    | Zoetis Inc                    | CUSIP: 98978V103<br>LEI: 549300HD9Q1LOC9KLJ48 | Long             | EC               | CORP              | US        |    230590 | NS      | $33792964.50  | 3.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                | Microsoft Corp                | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |    582840 | NS      | $139776688.80 | 13.03%            |  |  |  | No            |                  1 | On Loan: No      |
| Veeva Systems Inc             | Veeva Systems Inc             | CUSIP: 922475108<br>LEI: 549300YZEXPDB92M2F02 | Long             | EC               | CORP              | US        |    111650 | NS      | $18018077.00  | 1.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Stryker Corp                  | Stryker Corp                  | CUSIP: 863667101<br>LEI: 5493002F0SC4JTBU5137 | Long             | EC               | CORP              | US        |    132490 | NS      | $32392480.10  | 3.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Adobe Inc                     | Adobe Inc                     | CUSIP: 00724F101<br>LEI: FU4LY2G4933NH2E1CP29 | Long             | EC               | CORP              | US        |     60660 | NS      | $20413909.80  | 1.90%             |  |  |  | No            |                  1 | On Loan: No      |
| O'Reilly Automotive Inc       | O'Reilly Automotive Inc       | CUSIP: 67103H107<br>LEI: 549300K2RLMQL149Q332 | Long             | EC               | CORP              | US        |     20670 | NS      | $17446100.10  | 1.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Guidewire Software Inc        | Guidewire Software Inc        | CUSIP: 40171V100<br>LEI: 549300WXSG0J8IXZCK32 | Long             | EC               | CORP              | US        |    176380 | NS      | $11034332.80  | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| CoStar Group Inc              | CoStar Group Inc              | CUSIP: 22160N109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    546580 | NS      | $42239702.40  | 3.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuitive Surgical Inc        | Intuitive Surgical Inc        | CUSIP: 46120E602<br>LEI: 54930052SRG011710797 | Long             | EC               | CORP              | US        |     33380 | NS      | $8857383.00   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                | Mastercard Inc                | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |    197050 | NS      | $68520196.50  | 6.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Apollo Global Management Inc  | Apollo Global Management Inc  | CUSIP: 03769M106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    595550 | NS      | $37990134.50  | 3.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Palo Alto Networks Inc        | Palo Alto Networks Inc        | CUSIP: 697435105<br>LEI: 549300QXR2YVZV231H43 | Long             | EC               | CORP              | US        |    102170 | NS      | $14256801.80  | 1.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Starbucks Corp                | Starbucks Corp                | CUSIP: 855244109<br>LEI: OQSJ1DU9TAOC51A47K68 | Long             | EC               | CORP              | US        |    245500 | NS      | $24353600.00  | 2.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Live Nation Entertainment Inc | Live Nation Entertainment Inc | CUSIP: 538034109<br>LEI: 5493007B9BM9ZXJINO78 | Long             | EC               | CORP              | US        |    249742 | NS      | $17417007.08  | 1.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Pioneer Natural Resources Co  | Pioneer Natural Resources Co  | CUSIP: 723787107<br>LEI: FY8JBF7CCL2VE4F1B628 | Long             | EC               | CORP              | US        |     90480 | NS      | $20664727.20  | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Lam Research Corp             | Lam Research Corp             | CUSIP: 512807108<br>LEI: 549300I4GMO6D34U1T02 | Long             | EC               | CORP              | US        |     22200 | NS      | $9330660.00   | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                    | Copart Inc                    | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |    519640 | NS      | $31640879.60  | 2.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Unity Software Inc            | Unity Software Inc            | CUSIP: 91332U101<br>LEI: 549300D1ESJMGNQNG432 | Long             | EC               | CORP              | US        |    223480 | NS      | $6389293.20   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Equifax Inc                   | Equifax Inc                   | CUSIP: 294429105<br>LEI: 5493004MCF8JDC86VS77 | Long             | EC               | CORP              | US        |     49470 | NS      | $9614989.20   | 0.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                | Amazon.com Inc                | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |    711100 | NS      | $59732400.00  | 5.57%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2023-01-17

**Name of Applicant:** WILLIAM BLAIR FUNDS

**Signature:** John Raczek

**Name of Signer:** John Raczek

**Title:** Principal Financial Officer