# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001752724-25-193305
**Filing Date:** 2025-8
**Character Count:** 19235
**Document Hash:** 79b6050c55a75a9be13309459c6be250
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-193305.hdr.sgml**: 20250820

**ACCESSION NUMBER**: 0001752724-25-193305

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250820

**DATE AS OF CHANGE**: 20250820

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WILLIAM BLAIR FUNDS
- **CENTRAL INDEX KEY:** 0000822632

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05344
- **FILM NUMBER:** 251234068

**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 Growth Fund (Series ID: S000008594)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000023523 | Class N      | WBGSX           |
| C000023524 | Class I      | BGFIX           |
| C000211716 | Class R6     | BGFRX           |

## 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 Growth Fund

- **b. EDGAR series identifier (if any):** S000008594

- **c. LEI of Series:** 549300CN8MT9K8UCDE27

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

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-06-30

**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:** $237137650.24

**Total Liabilities:** $178172.75

**Net Assets:** $236959477.49

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000023523 | 0.39%                | 9.33%                | 7.82%                |
| Class ID C000211716 | 0.36%                | 9.34%                | 7.89%                |
| Class ID C000023524 | 0.36%                | 9.31%                | 7.94%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $553686.10               | $199900.69                                 |
| Month 2  | $4622004.58              | $14642501.32                               |
| Month 3  | $6303541.51              | $11175628.10                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Pure Storage Inc                  | Pure Storage Inc                  | CUSIP: 74624M102<br>LEI: 549300NPDB0BZTK3WO90 | Long             | EC               | CORP              | US        |     56849 | NS      | $3273365.42   | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| EPAM Systems Inc                  | EPAM Systems Inc                  | CUSIP: 29414B104<br>LEI: 549300XCR4R530HJP604 | Long             | EC               | CORP              | US        |     15399 | NS      | $2722851.18   | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuit Inc                        | Intuit Inc                        | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |      8482 | NS      | $6680677.66   | 2.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Dynatrace Inc                     | Dynatrace Inc                     | CUSIP: 268150109<br>LEI: 6488T0Z33CE9L61EX904 | Long             | EC               | CORP              | US        |     62277 | NS      | $3438313.17   | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Champion Homes Inc                | Champion Homes Inc                | CUSIP: 830830105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     21144 | NS      | $1323825.84   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Fixed Income Clearing Corp        | FIXED INC CLEARING CORP.REPO      | CUSIP: 000000000<br>LEI: 549300H47WTHXPU08X20 | Long             | RA               | CORP              | US        |   3934545 | PA      | $3934545.35   | 1.66%             |  |  |  | No            |                  2 | On Loan: No      |
| Chipotle Mexican Grill Inc        | Chipotle Mexican Grill Inc        | CUSIP: 169656105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     81307 | NS      | $4565388.05   | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Evercore Inc                      | Evercore Inc                      | CUSIP: 29977A105<br>LEI: 529900P6KLPT95DW3W58 | Long             | EC               | CORP              | US        |      7451 | NS      | $2011919.02   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| UnitedHealth Group Inc            | UnitedHealth Group Inc            | CUSIP: 91324P102<br>LEI: 549300GHBMY8T5GXDE41 | Long             | EC               | CORP              | US        |      9813 | NS      | $3061361.61   | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Drainage Systems Inc     | Advanced Drainage Systems Inc     | CUSIP: 00790R104<br>LEI: 6QQTOZ5MF5DHM7K92I60 | Long             | EC               | CORP              | US        |     16528 | NS      | $1898406.08   | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Hammond Power Solutions Inc       | Hammond Power Solutions Inc       | CUSIP: 408549103<br>LEI: 549300OLI26OOKEG5V73 | Long             | EC               | CORP              | CA        |     18486 | NS      | $1702734.70   | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Agilent Technologies Inc          | Agilent Technologies Inc          | CUSIP: 00846U101<br>LEI: QUIX8Y7A2WP0XRMW7G29 | Long             | EC               | CORP              | US        |     48448 | NS      | $5717348.48   | 2.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Micro Devices Inc        | Advanced Micro Devices Inc        | CUSIP: 007903107<br>LEI: R2I72C950HOYXII45366 | Long             | EC               | CORP              | US        |     40737 | NS      | $5780580.30   | 2.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                      | Alphabet Inc                      | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     47354 | NS      | $8345195.42   | 3.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Carlyle Group Inc/The             | Carlyle Group Inc/The             | CUSIP: 14316J108<br>LEI: 529900NGGVF94UK6PG95 | Long             | EC               | CORP              | US        |     91145 | NS      | $4684853.00   | 1.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Brink's Co/The                    | Brink's Co/The                    | CUSIP: 109696104<br>LEI: XFP140TFNOQMIVFTVQ13 | Long             | EC               | CORP              | US        |     24781 | NS      | $2212695.49   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Gogo Inc                          | Gogo Inc                          | CUSIP: 38046C109<br>LEI: 549300VL3DIHSFHYTO04 | Long             | EC               | CORP              | US        |    121171 | NS      | $1778790.28   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Workday Inc                       | Workday Inc                       | CUSIP: 98138H101<br>LEI: 549300J0DYC0N31V7G13 | Long             | EC               | CORP              | US        |      9160 | NS      | $2198400.00   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Tyler Technologies Inc            | Tyler Technologies Inc            | CUSIP: 902252105<br>LEI: 25490040SMU4Z8LBCW70 | Long             | EC               | CORP              | US        |      5133 | NS      | $3043047.72   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                    | Microsoft Corp                    | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     41567 | NS      | $20675841.47  | 8.73%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                       | NVIDIA Corp                       | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |    160755 | NS      | $25397682.45  | 10.72%            |  |  |  | No            |                  1 | On Loan: No      |
| Simply Good Foods Co/The          | Simply Good Foods Co/The          | CUSIP: 82900L102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     37968 | NS      | $1199409.12   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Doximity Inc                      | Doximity Inc                      | CUSIP: 26622P107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     32795 | NS      | $2011645.30   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Walmart Inc                       | Walmart Inc                       | CUSIP: 931142103<br>LEI: Y87794H0US1R65VBXU25 | Long             | EC               | CORP              | US        |     79244 | NS      | $7748478.32   | 3.27%             |  |  |  | No            |                  1 | On Loan: No      |
| TransUnion                        | TransUnion                        | CUSIP: 89400J107<br>LEI: 549300ZS772LUNUMRB03 | Long             | EC               | CORP              | US        |     42847 | NS      | $3770536.00   | 1.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                    | Mastercard Inc                    | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |     14412 | NS      | $8098679.28   | 3.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadcom Inc                      | Broadcom Inc                      | CUSIP: 11135F101<br>LEI: 549300WV6GIDOZJTV909 | Long             | EC               | CORP              | US        |     41433 | NS      | $11421006.45  | 4.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Cameco Corp                       | Cameco Corp                       | CUSIP: 13321L108<br>LEI: N4BHALMXL3GMZKCUON55 | Long             | EC               | CORP              | CA        |     82741 | NS      | $6141864.43   | 2.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Baldwin Insurance Group Inc/The   | Baldwin Insurance Group Inc/The   | CUSIP: 05589G102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     60044 | NS      | $2570483.64   | 1.08%             |  |  |  | No            |                  1 | On Loan: No      |
| Vital Farms Inc                   | Vital Farms Inc                   | CUSIP: 92847W103<br>LEI: 549300S6NYY7ER3XOT61 | Long             | EC               | CORP              | US        |     57714 | NS      | $2223143.28   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Abbott Laboratories               | Abbott Laboratories               | CUSIP: 002824100<br>LEI: HQD377W2YR662HK5JX27 | Long             | EC               | CORP              | US        |     21894 | NS      | $2977802.94   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Verra Mobility Corp               | Verra Mobility Corp               | CUSIP: 92511U102<br>LEI: 549300XX5EKGLR0M4152 | Long             | EC               | CORP              | US        |     73910 | NS      | $1876574.90   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| ServiceNow Inc                    | ServiceNow Inc                    | CUSIP: 81762P102<br>LEI: 549300HJTQM36M0E1G39 | Long             | EC               | CORP              | US        |      6944 | NS      | $7138987.52   | 3.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                | Meta Platforms Inc                | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |     13685 | NS      | $10100761.65  | 4.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Oracle Corp                       | Oracle Corp                       | CUSIP: 68389X105<br>LEI: 1Z4GXXU7ZHVWFCD8TV52 | Long             | EC               | CORP              | US        |     28860 | NS      | $6309661.80   | 2.66%             |  |  |  | No            |                  1 | On Loan: No      |
| ACV Auctions Inc                  | ACV Auctions Inc                  | CUSIP: 00091G104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    160522 | NS      | $2603666.84   | 1.10%             |  |  |  | No            |                  1 | On Loan: No      |
| ZipRecruiter Inc                  | ZipRecruiter Inc                  | CUSIP: 98980B103<br>LEI: 549300HLOVNNFCY2IV80 | Long             | EC               | CORP              | US        |    185463 | NS      | $929169.63    | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| PDF Solutions Inc                 | PDF Solutions Inc                 | CUSIP: 693282105<br>LEI: 549300GMSP6MROFBI160 | Long             | EC               | CORP              | US        |     68297 | NS      | $1460189.86   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Clearwater Analytics Holdings Inc | Clearwater Analytics Holdings Inc | CUSIP: 185123106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     78679 | NS      | $1725430.47   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Montrose Environmental Group Inc  | Montrose Environmental Group Inc  | CUSIP: 615111101<br>LEI: 254900ASI8K3LUB8Q958 | Long             | EC               | CORP              | US        |    104513 | NS      | $2287789.57   | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                        | Copart Inc                        | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |     70438 | NS      | $3456392.66   | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                         | Apple Inc                         | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |     56143 | NS      | $11518859.31  | 4.86%             |  |  |  | No            |                  1 | On Loan: No      |
| elf Beauty Inc                    | elf Beauty Inc                    | CUSIP: 26856L103<br>LEI: 549300U2K9TCON25C029 | Long             | EC               | CORP              | US        |     12436 | NS      | $1547535.84   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| West Pharmaceutical Services Inc  | West Pharmaceutical Services Inc  | CUSIP: 955306105<br>LEI: 5493007NKRGM1RJQ1P16 | Long             | EC               | CORP              | US        |     12437 | NS      | $2721215.60   | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                    | Amazon.com Inc                    | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |     56815 | NS      | $12464642.85  | 5.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Q2 Holdings Inc                   | Q2 Holdings Inc                   | CUSIP: 74736L109<br>LEI: 549300M9RKR9DZXWS696 | Long             | EC               | CORP              | US        |     27206 | NS      | $2546209.54   | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| IDEXX Laboratories Inc            | IDEXX Laboratories Inc            | CUSIP: 45168D104<br>LEI: OGMTXK0LUU1HKV2P0J84 | Long             | EC               | CORP              | US        |      5512 | NS      | $2956306.08   | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Confluent Inc                     | Confluent Inc                     | CUSIP: 20717M103<br>LEI: 254900MRZ83YWUV7SN74 | Long             | EC               | CORP              | US        |    110831 | NS      | $2763016.83   | 1.17%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-07-23

**Name of Applicant:** WILLIAM BLAIR FUNDS

**Signature:** John Raczek

**Name of Signer:** John Raczek

**Title:** Principal Financial Officer