# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001410368-26-013320
**Filing Date:** 2026-2
**Character Count:** 19918
**Document Hash:** 903f20ba7077d8192507d5158f92ac7e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-013320.hdr.sgml**: 20260218

**ACCESSION NUMBER**: 0001410368-26-013320

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260218

**DATE AS OF CHANGE**: 20260218

**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:** 26646320

**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 China Growth Fund (Series ID: S000072753)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000229252 | Class I      | WICGX           |
| C000229253 | Class R6     | WRCGX           |

## 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 China Growth Fund

- **b. EDGAR series identifier (if any):** S000072753

- **c. LEI of Series:** 54930074M2LK6QM2ES74

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

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

- **b. Date as of which information is reported:** 2025-12-31

**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:** $2138168.70

**Total Liabilities:** $59824.79

**Net Assets:** $2078343.91

**Cash Not Reported:** $74212.35

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000229252 | -3.59%               | -2.98%               | 1.00%                |
| Class ID C000229253 | -3.60%               | -2.99%               | 1.05%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $38413.65                | $-118473.59                                |
| Month 2  | $21797.61                | $-86003.00                                 |
| Month 3  | $-1952.69                | $23331.11                                  |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Atour Lifestyle Holdings Ltd              | Atour Lifestyle Holdings Ltd              | CUSIP: 04965M106<br>LEI: N/A                  | Long             | EC               | CORP              | KY        |       969 | NS      | $38178.60     | 1.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Futu Holdings Ltd                         | Futu Holdings Ltd                         | CUSIP: 36118L106<br>LEI: 213800X4W4ZRESFPTQ37 | Long             | EC               | CORP              | KY        |       157 | NS      | $25780.97     | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Hong Kong Exchanges & Clearing Ltd        | Hong Kong Exchanges & Clearing Ltd        | CUSIP: 000000000<br>LEI: 213800YTVSXYQN17BW16 | Long             | EC               | CORP              | HK        |       700 | NS      | $36660.80     | 1.76%             |  |  |  | No            |                  1 | On Loan: No      |
| PICC Property & Casualty Co Ltd           | PICC Property & Casualty Co Ltd           | CUSIP: 000000000<br>LEI: 300300F1000311000017 | Long             | EC               | CORP              | CN        |     14000 | NS      | $29429.38     | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| China Life Insurance Co Ltd               | China Life Insurance Co Ltd               | CUSIP: 000000000<br>LEI: 549300J6TFLDXGH6S048 | Long             | EC               | CORP              | CN        |      7000 | NS      | $24626.41     | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Zijin Mining Group Co Ltd                 | Zijin Mining Group Co Ltd                 | CUSIP: 000000000<br>LEI: 836800JRNL2393Z2I561 | Long             | EC               | CORP              | CN        |     12000 | NS      | $54983.49     | 2.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Hansoh Pharmaceutical Group Co Ltd        | Hansoh Pharmaceutical Group Co Ltd        | CUSIP: 000000000<br>LEI: 254900Q6MR00EBXTPF42 | Long             | EC               | CORP              | KY        |      4000 | NS      | $18543.69     | 0.89%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Mao Geping Cosmetics Co LTD               | Mao Geping Cosmetics Co LTD               | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      1300 | NS      | $13646.93     | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Beijing Geekplus Technology Co Ltd        | Beijing Geekplus Technology Co Ltd        | CUSIP: 000000000<br>LEI: 254900E51JOY5N5WAT77 | Long             | EC               | CORP              | CN        |      6000 | NS      | $16868.18     | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| China Merchants Bank Co Ltd               | China Merchants Bank Co Ltd               | CUSIP: 000000000<br>LEI: 549300MKO5B60FFIHF58 | Long             | EC               | CORP              | CN        |      7000 | NS      | $47489.95     | 2.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Industrial & Commercial Bank of China Ltd | Industrial & Commercial Bank of China Ltd | CUSIP: 000000000<br>LEI: 5493002ERZU2K9PZDL40 | Long             | EC               | CORP              | CN        |     45000 | NS      | $36369.13     | 1.75%             |  |  |  | No            |                  1 | On Loan: No      |
| CMOC Group Ltd                            | CMOC Group Ltd                            | CUSIP: 000000000<br>LEI: 2549008KG3638J59U652 | Long             | EC               | CORP              | CN        |      9000 | NS      | $22249.35     | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Agricultural Bank of China Ltd            | Agricultural Bank of China Ltd            | CUSIP: 000000000<br>LEI: 549300E7TSGLCOVSY746 | Long             | EC               | CORP              | CN        |     61000 | NS      | $45303.04     | 2.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Sieyuan Electric Co Ltd                   | Sieyuan Electric Co Ltd                   | CUSIP: 000000000<br>LEI: 836800H6UQQUWN4PSZ32 | Long             | EC               | CORP              | CN        |      1800 | NS      | $39889.62     | 1.92%             |  |  |  | No            |                  1 | On Loan: No      |
| WUS Printed Circuit Kunshan Co Ltd        | WUS Printed Circuit Kunshan Co Ltd        | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      4200 | NS      | $43994.09     | 2.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Shenzhen Inovance Technology Co Ltd       | Shenzhen Inovance Technology Co Ltd       | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      4100 | NS      | $44274.92     | 2.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Bank of Ningbo Co Ltd                     | Bank of Ningbo Co Ltd                     | CUSIP: 000000000<br>LEI: 300300C1092133000091 | Long             | EC               | CORP              | CN        |      6990 | NS      | $28147.18     | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| East Money Information Co Ltd             | East Money Information Co Ltd             | CUSIP: 000000000<br>LEI: 836800ZFB0ZEK3KKW487 | Long             | EC               | CORP              | CN        |      7200 | NS      | $23925.00     | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| BYD Co Ltd                                | BYD Co Ltd                                | CUSIP: 000000000<br>LEI: 5299005557VL7ULJ7A69 | Long             | EC               | CORP              | CN        |      1100 | NS      | $15409.27     | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Victory Giant Technology Huizhou Co Ltd   | Victory Giant Technology Huizhou Co Ltd   | CUSIP: 000000000<br>LEI: 836800LBU3EF5U7ECE87 | Long             | EC               | CORP              | CN        |       700 | NS      | $28857.77     | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Eoptolink Technology Inc Ltd              | Eoptolink Technology Inc Ltd              | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      1040 | NS      | $64238.54     | 3.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Zhongji Innolight Co Ltd                  | Zhongji Innolight Co Ltd                  | CUSIP: 000000000<br>LEI: 655600K7YZDKAI214O83 | Long             | EC               | CORP              | CN        |       800 | NS      | $69956.13     | 3.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Xiaomi Corp                               | Xiaomi Corp                               | CUSIP: 000000000<br>LEI: 2549001ACVFAZRNMKL32 | Long             | EC               | CORP              | KY        |      7600 | NS      | $38377.43     | 1.85%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Foxconn Industrial Internet Co Ltd        | Foxconn Industrial Internet Co Ltd        | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      5700 | NS      | $50701.71     | 2.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Innovent Biologics Inc                    | Innovent Biologics Inc                    | CUSIP: 000000000<br>LEI: 25490058ONL9SCIE1R22 | Long             | EC               | CORP              | KY        |      1500 | NS      | $14696.06     | 0.71%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Jones Tech PLC                            | Jones Tech PLC                            | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      2300 | NS      | $16228.39     | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Contemporary Amperex Technology Co Ltd    | Contemporary Amperex Technology Co Ltd    | CUSIP: 000000000<br>LEI: 300300KINDY1K0E9I032 | Long             | EC               | CORP              | CN        |      1340 | NS      | $70547.95     | 3.39%             |  |  |  | No            |                  1 | On Loan: No      |
| GigaDevice Semiconductor Inc              | GigaDevice Semiconductor Inc              | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |       700 | NS      | $21499.33     | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| WuXi AppTec Co Ltd                        | WuXi AppTec Co Ltd                        | CUSIP: 000000000<br>LEI: 254900OEPQLZSPLN9175 | Long             | EC               | CORP              | CN        |      2100 | NS      | $27286.33     | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Zhejiang Leapmotor Technology Co Ltd      | Zhejiang Leapmotor Technology Co Ltd      | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      2300 | NS      | $14368.54     | 0.69%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Alibaba Group Holding Ltd                 | Alibaba Group Holding Ltd                 | CUSIP: 000000000<br>LEI: 5493001NTNQJDH60PM02 | Long             | EC               | CORP              | KY        |     11676 | NS      | $214235.78    | 10.31%            |  |  |  | No            |                  1 | On Loan: No      |
| NetEase Inc                               | NetEase Inc                               | CUSIP: 000000000<br>LEI: 5299004AF4DSJDB0PA32 | Long             | EC               | CORP              | KY        |      2300 | NS      | $63420.15     | 3.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Tencent Holdings Ltd                      | Tencent Holdings Ltd                      | CUSIP: 000000000<br>LEI: 254900N4SLUMW4XUYY11 | Long             | EC               | CORP              | KY        |      3900 | NS      | $300165.75    | 14.44%            |  |  |  | No            |                  1 | On Loan: No      |
| Shenzhen Envicool Technology Co Ltd       | Shenzhen Envicool Technology Co Ltd       | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      2000 | NS      | $30645.95     | 1.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Pop Mart International Group Ltd          | Pop Mart International Group Ltd          | CUSIP: 000000000<br>LEI: 9845000A05E8F937E337 | Long             | EC               | CORP              | KY        |      1800 | NS      | $43411.67     | 2.09%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Huaming Power Equipment Co Ltd            | Huaming Power Equipment Co Ltd            | CUSIP: 000000000<br>LEI: 9845005FF6F9871E3985 | Long             | EC               | CORP              | CN        |      8200 | NS      | $29434.33     | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Trip.com Group Ltd                        | Trip.com Group Ltd                        | CUSIP: 000000000<br>LEI: 2549004RMYDSRQL4KW41 | Long             | EC               | CORP              | KY        |       700 | NS      | $49828.47     | 2.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Jiangsu Hengrui Pharmaceuticals Co Ltd    | Jiangsu Hengrui Pharmaceuticals Co Ltd    | CUSIP: 000000000<br>LEI: 2549003BT1XS3SE3E448 | Long             | EC               | CORP              | CN        |      3200 | NS      | $27326.47     | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Yutong Bus Co Ltd                         | Yutong Bus Co Ltd                         | CUSIP: 000000000<br>LEI: 300300OMPRVW0Q75F037 | Long             | EC               | CORP              | CN        |      7100 | NS      | $33282.20     | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Shengyi Technology Co Ltd                 | Shengyi Technology Co Ltd                 | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      4500 | NS      | $46065.68     | 2.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Jiangsu Hengli Hydraulic Co Ltd           | Jiangsu Hengli Hydraulic Co Ltd           | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      1200 | NS      | $18907.08     | 0.91%             |  |  |  | No            |                  1 | On Loan: No      |
| Eastroc Beverage Group Co Ltd             | Eastroc Beverage Group Co Ltd             | CUSIP: 000000000<br>LEI: 836800LQ338417RCIL29 | Long             | EC               | CORP              | CN        |       790 | NS      | $30281.56     | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Shanghai Chicmax Cosmetic Co Ltd          | Shanghai Chicmax Cosmetic Co Ltd          | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |      1800 | NS      | $16837.34     | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| WuXi XDC Cayman Inc                       | WuXi XDC Cayman Inc                       | CUSIP: 000000000<br>LEI: 549300BV0TP5RVPBYO24 | Long             | EC               | CORP              | KY        |      2000 | NS      | $15611.55     | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Laopu Gold Co Ltd                         | Laopu Gold Co Ltd                         | CUSIP: 000000000<br>LEI: 2549003X1NWK88OCWI97 | Long             | EC               | CORP              | CN        |       300 | NS      | $23822.07     | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| BeOne Medicines Ltd                       | BeOne Medicines Ltd                       | CUSIP: 000000000<br>LEI: 549300JFUK6FRD5MH739 | Long             | EC               | CORP              | CH        |       700 | NS      | $16126.79     | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Fuyao Glass Industry Group Co Ltd         | Fuyao Glass Industry Group Co Ltd         | CUSIP: 000000000<br>LEI: 549300AS5CSLWETN0P64 | Long             | EC               | CORP              | CN        |      5000 | NS      | $43172.68     | 2.08%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Meitu Inc                                 | Meitu Inc                                 | CUSIP: 000000000<br>LEI: 529900P2POH56W116T02 | Long             | EC               | CORP              | KY        |     26000 | NS      | $23385.20     | 1.13%             |  |  |  | Yes           |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-01-15

**Name of Applicant:** WILLIAM BLAIR FUNDS

**Signature:** John Raczek

**Name of Signer:** John Raczek

**Title:** Principal Financial Officer