# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001752724-23-029941
**Filing Date:** 2023-2
**Character Count:** 23079
**Document Hash:** 71fbd0cbf267225add4c4cb36ac69d61
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-029941.hdr.sgml**: 20230221

**ACCESSION NUMBER**: 0001752724-23-029941

**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:** 23645609

**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:** 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:** $189304418.54

**Total Liabilities:** $200070.81

**Net Assets:** $189104347.73

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000023523 | 5.15%                | 5.73%                | -6.11%               |
| Class ID C000211716 | 5.04%                | 5.84%                | -6.15%               |
| Class ID C000023524 | 5.06%                | 5.86%                | -6.17%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-11095009.58            | $21653507.49                               |
| Month 2  | $7246961.64              | $3882975.48                                |
| Month 3  | $703614.80               | $-13365122.13                              |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Revolve Group Inc                          | Revolve Group Inc                          | CUSIP: 76156B107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     37929 | NS      | $844299.54    | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Pure Storage Inc                           | Pure Storage Inc                           | CUSIP: 74624M102<br>LEI: 549300NPDB0BZTK3WO90 | Long             | EC               | CORP              | US        |     83649 | NS      | $2238447.24   | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Dynatrace Inc                              | Dynatrace Inc                              | CUSIP: 268150109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     74824 | NS      | $2865759.20   | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Skyline Champion Corp                      | Skyline Champion Corp                      | CUSIP: 830830105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     24292 | NS      | $1251280.92   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Trex Co Inc                                | Trex Co Inc                                | CUSIP: 89531P105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     17503 | NS      | $740901.99    | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Energy Recovery Inc                        | Energy Recovery Inc                        | CUSIP: 29270J100<br>LEI: 549300ZEQL52Z525WJ22 | Long             | EC               | CORP              | US        |     86837 | NS      | $1779290.13   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| UnitedHealth Group Inc                     | UnitedHealth Group Inc                     | CUSIP: 91324P102<br>LEI: 549300GHBMY8T5GXDE41 | Long             | EC               | CORP              | US        |     14493 | NS      | $7683898.74   | 4.06%             |  |  |  | No            |                  1 | On Loan: No      |
| National Instruments Corp                  | National Instruments Corp                  | CUSIP: 636518102<br>LEI: 549300TP4OOPCYWDUP86 | Long             | EC               | CORP              | US        |     89317 | NS      | $3295797.30   | 1.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Green Plains Inc                           | Green Plains Inc                           | CUSIP: 393222104<br>LEI: VJ5WLTHARBSDR14KIZ98 | Long             | EC               | CORP              | US        |     54989 | NS      | $1677164.50   | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| NIKE Inc                                   | NIKE Inc                                   | CUSIP: 654106103<br>LEI: 787RXPR0UX0O0XUXPZ81 | Long             | EC               | CORP              | US        |     40853 | NS      | $4780209.53   | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Agilent Technologies Inc                   | Agilent Technologies Inc                   | CUSIP: 00846U101<br>LEI: QUIX8Y7A2WP0XRMW7G29 | Long             | EC               | CORP              | US        |     13312 | NS      | $1992140.80   | 1.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Burlington Stores Inc                      | Burlington Stores Inc                      | CUSIP: 122017106<br>LEI: 5299003Z37DVGKKC1W09 | Long             | EC               | CORP              | US        |     12840 | NS      | $2603438.40   | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| Fixed Income Clearing Corp                 | FIXED INC CLEARING CORP.REPO               | CUSIP: 000000000<br>LEI: 549300H47WTHXPU08X20 | Long             | RA               | CORP              | US        |    786526 | PA      | $786525.84    | 0.42%             |  |  |  | No            |                  2 | On Loan: No      |
| Horizon Therapeutics Plc                   | Horizon Therapeutics Plc                   | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |     33855 | NS      | $3852699.00   | 2.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Micro Devices Inc                 | Advanced Micro Devices Inc                 | CUSIP: 007903107<br>LEI: R2I72C950HOYXII45366 | Long             | EC               | CORP              | US        |     48276 | NS      | $3126836.52   | 1.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Texas Instruments Inc                      | Texas Instruments Inc                      | CUSIP: 882508104<br>LEI: WDJNR2L6D8RWOEB8T652 | Long             | EC               | CORP              | US        |     26299 | NS      | $4345120.78   | 2.30%             |  |  |  | No            |                  1 | On Loan: No      |
| PayPal Holdings Inc                        | PayPal Holdings Inc                        | CUSIP: 70450Y103<br>LEI: 5493005X2GO78EFZ3E94 | Long             | EC               | CORP              | US        |     39877 | NS      | $2840039.94   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                               | Alphabet Inc                               | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |    131348 | NS      | $11588834.04  | 6.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Estee Lauder Cos Inc/The                   | Estee Lauder Cos Inc/The                   | CUSIP: 518439104<br>LEI: 549300VFZ8XJ9NUPU221 | Long             | EC               | CORP              | US        |     10242 | NS      | $2541142.62   | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Farfetch Ltd                               | Farfetch Ltd                               | CUSIP: 30744W107<br>LEI: 549300QFQ74Z0F96NS78 | Long             | EC               | CORP              | KY        |    109181 | NS      | $516426.13    | 0.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Crown Holdings Inc                         | Crown Holdings Inc                         | CUSIP: 228368106<br>LEI: NYLWZIOY8PUNIT4JOE22 | Long             | EC               | CORP              | US        |     32586 | NS      | $2678895.06   | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Bridge Investment Group Holdings Inc       | Bridge Investment Group Holdings Inc       | CUSIP: 10806B100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     54605 | NS      | $657990.25    | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Zoetis Inc                                 | Zoetis Inc                                 | CUSIP: 98978V103<br>LEI: 549300HD9Q1LOC9KLJ48 | Long             | EC               | CORP              | US        |     33790 | NS      | $4951924.50   | 2.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Brink's Co/The                             | Brink's Co/The                             | CUSIP: 109696104<br>LEI: XFP140TFNOQMIVFTVQ13 | Long             | EC               | CORP              | US        |     46252 | NS      | $2484194.92   | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Workday Inc                                | Workday Inc                                | CUSIP: 98138H101<br>LEI: 549300J0DYC0N31V7G13 | Long             | EC               | CORP              | US        |     11246 | NS      | $1881793.18   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                             | Microsoft Corp                             | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     83472 | NS      | $20018255.04  | 10.59%            |  |  |  | No            |                  1 | On Loan: No      |
| Penumbra Inc                               | Penumbra Inc                               | CUSIP: 70975L107<br>LEI: 549300RGE06P3ECANU72 | Long             | EC               | CORP              | US        |      6198 | NS      | $1378807.08   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Veeva Systems Inc                          | Veeva Systems Inc                          | CUSIP: 922475108<br>LEI: 549300YZEXPDB92M2F02 | Long             | EC               | CORP              | US        |     14771 | NS      | $2383743.98   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Stryker Corp                               | Stryker Corp                               | CUSIP: 863667101<br>LEI: 5493002F0SC4JTBU5137 | Long             | EC               | CORP              | US        |      9673 | NS      | $2364951.77   | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                                | NVIDIA Corp                                | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |     24292 | NS      | $3550032.88   | 1.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Take-Two Interactive Software Inc          | Take-Two Interactive Software Inc          | CUSIP: 874054109<br>LEI: BOMSTHHJK882EWYX3334 | Long             | EC               | CORP              | US        |     18831 | NS      | $1960872.03   | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Coca-Cola Co/The                           | Coca-Cola Co/The                           | CUSIP: 191216100<br>LEI: UWJKFUJFZ02DKWI3RY53 | Long             | EC               | CORP              | US        |     80993 | NS      | $5151964.73   | 2.72%             |  |  |  | No            |                  1 | On Loan: No      |
| MongoDB Inc                                | MongoDB Inc                                | CUSIP: 60937P106<br>LEI: 549300TPTG69WKWE1Z37 | Long             | EC               | CORP              | US        |      5638 | NS      | $1109783.92   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Ares Management Corp                       | Ares Management Corp                       | CUSIP: 03990B101<br>LEI: 529900JUV61FH7B8VW38 | Long             | EC               | CORP              | US        |     32557 | NS      | $2228201.08   | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Nice Ltd                                   | Nice Ltd                                   | CUSIP: 653656108<br>LEI: 254900YTY4EF5Z4W0A51 | Long             | EC               | CORP              | IL        |     13253 | NS      | $2548551.90   | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Etsy Inc                                   | Etsy Inc                                   | CUSIP: 29786A106<br>LEI: 54930089Q7XT501AEA40 | Long             | EC               | CORP              | US        |     12485 | NS      | $1495453.30   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Kornit Digital Ltd                         | Kornit Digital Ltd                         | CUSIP: 000000000<br>LEI: 5299006DPCQWP3VTFK34 | Long             | EC               | CORP              | IL        |     45506 | NS      | $1045272.82   | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| CoStar Group Inc                           | CoStar Group Inc                           | CUSIP: 22160N109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     42208 | NS      | $3261834.24   | 1.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuitive Surgical Inc                     | Intuitive Surgical Inc                     | CUSIP: 46120E602<br>LEI: 54930052SRG011710797 | Long             | EC               | CORP              | US        |     16096 | NS      | $4271073.60   | 2.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                             | Mastercard Inc                             | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |     26728 | NS      | $9294127.44   | 4.91%             |  |  |  | No            |                  1 | On Loan: No      |
| Cameco Corp                                | Cameco Corp                                | CUSIP: 13321L108<br>LEI: N4BHALMXL3GMZKCUON55 | Long             | EC               | CORP              | CA        |    192388 | NS      | $4361435.96   | 2.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Bright Horizons Family Solutions Inc       | Bright Horizons Family Solutions Inc       | CUSIP: 109194100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     28601 | NS      | $1804723.10   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Apollo Global Management Inc               | Apollo Global Management Inc               | CUSIP: 03769M106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     36807 | NS      | $2347918.53   | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| SBA Communications Corp                    | SBA Communications Corp                    | CUSIP: 78410G104<br>LEI: 5299001HX8ZN8Y8QIT49 | Long             | EC               |  | US        |     12544 | NS      | $3516208.64   | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Verra Mobility Corp                        | Verra Mobility Corp                        | CUSIP: 92511U102<br>LEI: 549300XX5EKGLR0M4152 | Long             | EC               | CORP              | US        |    193244 | NS      | $2672564.52   | 1.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Fidelity National Information Services Inc | Fidelity National Information Services Inc | CUSIP: 31620M106<br>LEI: 6WQI0GK1PRFVBA061U48 | Long             | EC               | CORP              | US        |     38666 | NS      | $2623488.10   | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Aon PLC                                    | Aon PLC                                    | CUSIP: 000000000<br>LEI: 635400FALWQYX5E6QC64 | Long             | EC               | CORP              | IE        |      8471 | NS      | $2542485.94   | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| ACV Auctions Inc                           | ACV Auctions Inc                           | CUSIP: 00091G104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    145993 | NS      | $1198602.53   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| ZipRecruiter Inc                           | ZipRecruiter Inc                           | CUSIP: 98980B103<br>LEI: 549300HLOVNNFCY2IV80 | Long             | EC               | CORP              | US        |     94482 | NS      | $1551394.44   | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Warner Music Group Corp                    | Warner Music Group Corp                    | CUSIP: 934550203<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    109476 | NS      | $3833849.52   | 2.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Palo Alto Networks Inc                     | Palo Alto Networks Inc                     | CUSIP: 697435105<br>LEI: 549300QXR2YVZV231H43 | Long             | EC               | CORP              | US        |     17891 | NS      | $2496510.14   | 1.32%             |  |  |  | No            |                  1 | On Loan: No      |
| HealthEquity Inc                           | HealthEquity Inc                           | CUSIP: 42226A107<br>LEI: 529900LRJU1RAFQHM467 | Long             | EC               | CORP              | US        |     24115 | NS      | $1486448.60   | 0.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Copart Inc                                 | Copart Inc                                 | CUSIP: 217204106<br>LEI: 549300KVYX3JWMYEHU61 | Long             | EC               | CORP              | US        |     76211 | NS      | $4640487.79   | 2.45%             |  |  |  | No            |                  1 | On Loan: No      |
| New Fortress Energy Inc                    | New Fortress Energy Inc                    | CUSIP: 644393100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     69275 | NS      | $2938645.50   | 1.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Performance Food Group Co                  | Performance Food Group Co                  | CUSIP: 71377A103<br>LEI: 549300EUK8GR9IT1YK57 | Long             | EC               | CORP              | US        |     60450 | NS      | $3529675.50   | 1.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Chart Industries Inc                       | Chart Industries Inc                       | CUSIP: 16115Q308<br>LEI: EM7QGKC1GYOF3LSZSL80 | Long             | EC               | CORP              | US        |     16706 | NS      | $1925032.38   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                             | Amazon.com Inc                             | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |    115675 | NS      | $9716700.00   | 5.14%             |  |  |  | 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