# EDGAR Filing Document

**Accession Number:** 0000822632
**File Stem:** 0001752724-23-029947
**Filing Date:** 2023-2
**Character Count:** 25684
**Document Hash:** 6d9be8e14def91a05dccd1f2e7f20b7b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-029947.hdr.sgml**: 20230221

**ACCESSION NUMBER**: 0001752724-23-029947

**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:** 23645616

**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 Global Leaders Fund (Series ID: S000019315)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000053607 | Class N      | WGGNX           |
| C000053608 | Class I      | WGFIX           |
| C000053609 | Class R6     | BGGIX           |

## 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 Global Leaders Fund

- **b. EDGAR series identifier (if any):** S000019315

- **c. LEI of Series:** IOPYXIUKG0D1RVEWTK45

**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:** $91814889.04

**Total Liabilities:** $134739.81

**Net Assets:** $91680149.23

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000053609 | 5.82%                | 9.31%                | -4.72%               |
| Class ID C000053607 | 5.87%                | 9.24%                | -4.75%               |
| Class ID C000053608 | 5.82%                | 9.32%                | -4.71%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-423762.24              | $5444700.05                                |
| Month 2  | $-87200.37               | $8430765.86                                |
| Month 3  | $-1638.15                | $-4575036.35                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Charles River Laboratories International Inc | Charles River Laboratories International Inc | CUSIP: 159864107<br>LEI: 549300BSQ0R4UZ5KX287 | Long             | EC               | CORP              | US        |      5954 | NS      | $1297376.60   | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| LVMH Moet Hennessy Louis Vuitton SE          | LVMH Moet Hennessy Louis Vuitton SE          | CUSIP: 000000000<br>LEI: IOG4E947OATN0KJYSD45 | Long             | EC               | CORP              | FR        |      3245 | NS      | $2361706.49   | 2.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Salesforce Inc                               | Salesforce Inc                               | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |     12357 | NS      | $1638414.63   | 1.79%             |  |  |  | No            |                  1 | On Loan: No      |
| BlackRock Inc                                | BlackRock Inc                                | CUSIP: 09247X101<br>LEI: 549300LRIF3NWCU26A80 | Long             | EC               | CORP              | US        |      2033 | NS      | $1440644.79   | 1.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Aristocrat Leisure Ltd                       | Aristocrat Leisure Ltd                       | CUSIP: 000000000<br>LEI: 529900TE2HO3OZKYKC27 | Long             | EC               | CORP              | AU        |     17739 | NS      | $368608.37    | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| UnitedHealth Group Inc                       | UnitedHealth Group Inc                       | CUSIP: 91324P102<br>LEI: 549300GHBMY8T5GXDE41 | Long             | EC               | CORP              | US        |      4289 | NS      | $2273942.02   | 2.48%             |  |  |  | No            |                  1 | On Loan: No      |
| ASML Holding NV                              | ASML Holding NV                              | CUSIP: 000000000<br>LEI: 724500Y6DUVHQD6OXN27 | Long             | EC               | CORP              | NL        |      1189 | NS      | $641218.73    | 0.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Partners Group Holding AG                    | Partners Group Holding AG                    | CUSIP: 000000000<br>LEI: 549300I3IVVWZWDHI788 | Long             | EC               | CORP              | CH        |      1252 | NS      | $1105968.31   | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| NextEra Energy Inc                           | NextEra Energy Inc                           | CUSIP: 65339F101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     17048 | NS      | $1425212.80   | 1.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Thermo Fisher Scientific Inc                 | Thermo Fisher Scientific Inc                 | CUSIP: 883556102<br>LEI: HCHV7422L5HDJZCRFL38 | Long             | EC               | CORP              | US        |      3423 | NS      | $1885011.87   | 2.06%             |  |  |  | No            |                  1 | On Loan: No      |
| NIKE Inc                                     | NIKE Inc                                     | CUSIP: 654106103<br>LEI: 787RXPR0UX0O0XUXPZ81 | Long             | EC               | CORP              | US        |     12564 | NS      | $1470113.64   | 1.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Airbus SE                                    | Airbus SE                                    | CUSIP: 000000000<br>LEI: MINO79WLOO247M1IL051 | Long             | EC               | CORP              | NL        |     26529 | NS      | $3152740.92   | 3.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Novo Nordisk A/S                             | Novo Nordisk A/S                             | CUSIP: 000000000<br>LEI: 549300DAQ1CVT6CXN342 | Long             | EC               | CORP              | DK        |     18708 | NS      | $2526070.13   | 2.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Linde PLC                                    | Linde PLC                                    | CUSIP: 000000000<br>LEI: 8945002PAZHZLBGKGF02 | Long             | EC               | CORP              | IE        |      4021 | NS      | $1311569.78   | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Fixed Income Clearing Corp                   | FIXED INC CLEARING CORP.REPO                 | CUSIP: 000000000<br>LEI: 549300H47WTHXPU08X20 | Long             | RA               | CORP              | US        |   1405510 | PA      | $1405510.19   | 1.53%             |  |  |  | No            |                  2 | On Loan: No      |
| SVB Financial Group                          | SVB Financial Group                          | CUSIP: 78486Q101<br>LEI: 549300D2KJ20JMXE7542 | Long             | EC               | CORP              | US        |      1984 | NS      | $456597.76    | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Reliance Industries Ltd                      | Reliance Industries Ltd                      | CUSIP: 000000000<br>LEI: 5493003UOETFYRONLG31 | Long             | EC               | CORP              | IN        |     49921 | NS      | $1536912.69   | 1.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Globant SA                                   | Globant SA                                   | CUSIP: 000000000<br>LEI: 2221008DCMSPYS42DS88 | Long             | EC               | CORP              | LU        |      5060 | NS      | $850889.60    | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Enphase Energy Inc                           | Enphase Energy Inc                           | CUSIP: 29355A107<br>LEI: 5493008U7KIGMI59Z314 | Long             | EC               | CORP              | US        |      2298 | NS      | $608878.08    | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| PayPal Holdings Inc                          | PayPal Holdings Inc                          | CUSIP: 70450Y103<br>LEI: 5493005X2GO78EFZ3E94 | Long             | EC               | CORP              | US        |     12209 | NS      | $869524.98    | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                                 | Alphabet Inc                                 | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     28120 | NS      | $2481027.60   | 2.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Estee Lauder Cos Inc/The                     | Estee Lauder Cos Inc/The                     | CUSIP: 518439104<br>LEI: 549300VFZ8XJ9NUPU221 | Long             | EC               | CORP              | US        |      5250 | NS      | $1302577.50   | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Prologis Inc                                 | Prologis Inc                                 | CUSIP: 74340W103<br>LEI: 529900DFH19P073LZ636 | Long             | EC               |  | US        |      5626 | NS      | $634218.98    | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Zoetis Inc                                   | Zoetis Inc                                   | CUSIP: 98978V103<br>LEI: 549300HD9Q1LOC9KLJ48 | Long             | EC               | CORP              | US        |      7827 | NS      | $1147046.85   | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Daikin Industries Ltd                        | Daikin Industries Ltd                        | CUSIP: 000000000<br>LEI: 549300Y7FWSTSHMW5Y57 | Long             | EC               | CORP              | JP        |      7000 | NS      | $1077415.42   | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Old Dominion Freight Line Inc                | Old Dominion Freight Line Inc                | CUSIP: 679580100<br>LEI: 5299009TWK32WE417T96 | Long             | EC               | CORP              | US        |      3142 | NS      | $891636.76    | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Workday Inc                                  | Workday Inc                                  | CUSIP: 98138H101<br>LEI: 549300J0DYC0N31V7G13 | Long             | EC               | CORP              | US        |      9865 | NS      | $1650710.45   | 1.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                               | Microsoft Corp                               | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     12971 | NS      | $3110705.22   | 3.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Evolution AB                                 | Evolution AB                                 | CUSIP: 000000000<br>LEI: 549300SUH6ZR1RF6TA88 | Long             | EC               | CORP              | SE        |     10703 | NS      | $1041493.28   | 1.14%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Veeva Systems Inc                            | Veeva Systems Inc                            | CUSIP: 922475108<br>LEI: 549300YZEXPDB92M2F02 | Long             | EC               | CORP              | US        |      2664 | NS      | $429916.32    | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Intercontinental Exchange Inc                | Intercontinental Exchange Inc                | CUSIP: 45866F104<br>LEI: 5493000F4ZO33MV32P92 | Long             | EC               | CORP              | US        |     13118 | NS      | $1345775.62   | 1.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Adyen NV                                     | Adyen NV                                     | CUSIP: 000000000<br>LEI: 724500973ODKK3IFQ447 | Long             | EC               | CORP              | NL        |       927 | NS      | $1278487.93   | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| MTU Aero Engines AG                          | MTU Aero Engines AG                          | CUSIP: 000000000<br>LEI: 529900807L67JY81RD65 | Long             | EC               | CORP              | DE        |      9204 | NS      | $1992158.74   | 2.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Compass Group PLC                            | Compass Group PLC                            | CUSIP: 000000000<br>LEI: 2138008M6MH9OZ6U2T68 | Long             | EC               | CORP              | GB        |    113901 | NS      | $2640409.50   | 2.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Rentokil Initial PLC                         | Rentokil Initial PLC                         | CUSIP: 000000000<br>LEI: 549300VN4WV7Z6T14K68 | Long             | EC               | CORP              | GB        |    223088 | NS      | $1370087.48   | 1.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Keyence Corp                                 | Keyence Corp                                 | CUSIP: 000000000<br>LEI: 529900M7PQBS7A89DZ11 | Long             | EC               | CORP              | JP        |      3000 | NS      | $1175403.84   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| CoStar Group Inc                             | CoStar Group Inc                             | CUSIP: 22160N109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     17737 | NS      | $1370715.36   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Indutrade AB                                 | Indutrade AB                                 | CUSIP: 000000000<br>LEI: 549300FISLQ6CEFP1867 | Long             | EC               | CORP              | SE        |     36846 | NS      | $745405.12    | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| DSV A/S                                      | DSV A/S                                      | CUSIP: 000000000<br>LEI: 529900X41C0BSLK67H70 | Long             | EC               | CORP              | DK        |     10841 | NS      | $1711170.11   | 1.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlas Copco AB                               | Atlas Copco AB                               | CUSIP: 000000000<br>LEI: 213800T8PC8Q4FYJZR07 | Long             | EC               | CORP              | SE        |    142369 | NS      | $1679528.11   | 1.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuitive Surgical Inc                       | Intuitive Surgical Inc                       | CUSIP: 46120E602<br>LEI: 54930052SRG011710797 | Long             | EC               | CORP              | US        |      4365 | NS      | $1158252.75   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                               | Mastercard Inc                               | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |      9149 | NS      | $3181381.77   | 3.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Canadian Pacific Railway Ltd                 | Canadian Pacific Railway Ltd                 | CUSIP: 13645T100<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |     24562 | NS      | $1832079.58   | 2.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Lonza Group AG                               | Lonza Group AG                               | CUSIP: 000000000<br>LEI: 549300EFW4H2TCZ71055 | Long             | EC               | CORP              | CH        |      2467 | NS      | $1208887.36   | 1.32%             |  |  |  | No            |                  1 | On Loan: No      |
| CSL Ltd                                      | CSL Ltd                                      | CUSIP: 000000000<br>LEI: 529900ECSECK5ZDQTE14 | Long             | EC               | CORP              | AU        |      5642 | NS      | $1105388.74   | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Watsco Inc                                   | Watsco Inc                                   | CUSIP: 942622200<br>LEI: 549300F1Y3LN5BX5WN75 | Long             | EC               | CORP              | US        |      4194 | NS      | $1045983.60   | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Zurich Insurance Group AG                    | Zurich Insurance Group AG                    | CUSIP: 000000000<br>LEI: 529900QVNRBND50TXP03 | Long             | EC               | CORP              | CH        |      2633 | NS      | $1259477.53   | 1.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                           | Meta Platforms Inc                           | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |      8872 | NS      | $1067656.48   | 1.16%             |  |  |  | No            |                  1 | On Loan: No      |
| Lululemon Athletica Inc                      | Lululemon Athletica Inc                      | CUSIP: 550021109<br>LEI: 549300D9GZ4BMLDW5T40 | Long             | EC               | CORP              | US        |      4408 | NS      | $1412235.04   | 1.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Experian PLC                                 | Experian PLC                                 | CUSIP: 000000000<br>LEI: 635400RXXHHYT1JTSZ26 | Long             | EC               | CORP              | JE        |     36509 | NS      | $1241589.54   | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Autodesk Inc                                 | Autodesk Inc                                 | CUSIP: 052769106<br>LEI: FRKKVKAIQEF3FCSTPG55 | Long             | EC               | CORP              | US        |      6283 | NS      | $1174104.21   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Roper Technologies Inc                       | Roper Technologies Inc                       | CUSIP: 776696106<br>LEI: 54930003T4SXCIWVXY35 | Long             | EC               | CORP              | US        |      3016 | NS      | $1303183.44   | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Ulta Beauty Inc                              | Ulta Beauty Inc                              | CUSIP: 90384S303<br>LEI: 529900CIV6HN8M28YM82 | Long             | EC               | CORP              | US        |      4919 | NS      | $2307355.33   | 2.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Hexagon AB                                   | Hexagon AB                                   | CUSIP: 000000000<br>LEI: 549300WJFW6ILNI4TA80 | Long             | EC               | CORP              | SE        |    173145 | NS      | $1808632.13   | 1.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Synopsys Inc                                 | Synopsys Inc                                 | CUSIP: 871607107<br>LEI: QG7T915N9S0NY5UKNE63 | Long             | EC               | CORP              | US        |      4298 | NS      | $1372308.42   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Taiwan Semiconductor Manufacturing Co Ltd    | Taiwan Semiconductor Manufacturing Co Ltd    | CUSIP: 874039100<br>LEI: 549300KB6NK5SBD14S87 | Long             | EC               | CORP              | TW        |     17071 | NS      | $1271618.79   | 1.39%             |  |  |  | No            |                  1 | On Loan: No      |
| MercadoLibre Inc                             | MercadoLibre Inc                             | CUSIP: 58733R102<br>LEI: 549300DKPDN9M5S8GB14 | Long             | EC               | CORP              | US        |       703 | NS      | $594906.72    | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| AIA Group Ltd                                | AIA Group Ltd                                | CUSIP: 000000000<br>LEI: ZP5ILWVSYE4LJGMMVD57 | Long             | EC               | CORP              | HK        |    148800 | NS      | $1654720.74   | 1.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Ryanair Holdings PLC                         | Ryanair Holdings PLC                         | CUSIP: 783513203<br>LEI: 635400BR2ROC1FVEBQ56 | Long             | EC               | CORP              | IE        |     12251 | NS      | $915884.76    | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| HDFC Bank Ltd                                | HDFC Bank Ltd                                | CUSIP: 40415F101<br>LEI: 335800ZQ6I4E2JXENC50 | Long             | EC               | CORP              | IN        |     24772 | NS      | $1694652.52   | 1.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                               | Amazon.com Inc                               | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |     21731 | NS      | $1825404.00   | 1.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Infineon Technologies AG                     | Infineon Technologies AG                     | CUSIP: 000000000<br>LEI: TSI2PJM6EPETEQ4X1U25 | Long             | EC               | CORP              | DE        |     57705 | NS      | $1756129.29   | 1.92%             |  |  |  | No            |                  1 | On Loan: No      |
| IDEXX Laboratories Inc                       | IDEXX Laboratories Inc                       | CUSIP: 45168D104<br>LEI: OGMTXK0LUU1HKV2P0J84 | Long             | EC               | CORP              | US        |      2803 | NS      | $1143511.88   | 1.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Halma PLC                                    | Halma PLC                                    | CUSIP: 000000000<br>LEI: 2138007FRGLUR9KGBT40 | Long             | EC               | CORP              | GB        |     26759 | NS      | $638594.84    | 0.70%             |  |  |  | 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