# EDGAR Filing Document

**Accession Number:** 0001806095
**File Stem:** 0002066578-25-000520
**Filing Date:** 2025-8
**Character Count:** 19657
**Document Hash:** 8c915c93bc78eed2bda288e32e078d40
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002066578-25-000520.hdr.sgml**: 20250827

**ACCESSION NUMBER**: 0002066578-25-000520

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250827

**DATE AS OF CHANGE**: 20250827

**PERIOD START**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Datum One Series Trust
- **CENTRAL INDEX KEY:** 0001806095

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-23556
- **FILM NUMBER:** 251265423

**BUSINESS ADDRESS:**
- **STREET 1:** 333 SOUTH WABASH AVE.
- **STREET 2:** 43RD FLOOR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60604
- **BUSINESS PHONE:** 866-494-4270

**MAIL ADDRESS:**
- **STREET 1:** 50 S. LASALLE STREET
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60603

## Series and Classes Contracts Data

### Stewart Investors Worldwide Leaders Fund (Series ID: S000089901)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000256744 | Select Shares |  |

## Nport-Ex

**Stewart Investors Worldwide Leaders Fund** 

**PORTFOLIO OF INVESTMENTS** 

June 30, 2025 (Unaudited)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

---

| | | |
|:---|:---|:---|
| **COMMON STOCKS – 97.2%** | Shares | Fair Value |
| **SOFTWARE – 10.8%** |  |  |
| Fortinet Inc. (United States) <sup>(a)</sup> | &nbsp;&nbsp; 2184 | &nbsp;&nbsp; $230893 |
| Roper Technologies Inc. (United States)  | &nbsp;&nbsp; 193 | &nbsp;&nbsp; 109400 |
| Synopsys Inc. (United States) <sup>(a)</sup> | &nbsp;&nbsp; 174 | &nbsp;&nbsp; 89206 |
|  |  | &nbsp;&nbsp; $429499 |
| **HEALTH CARE EQUIPMENT & SUPPLIES – 9.1%** |  |  |
| BioMerieux (France)  | &nbsp;&nbsp; 1604 | &nbsp;&nbsp; $221860 |
| Hoya Corp. (Japan)  | &nbsp;&nbsp; 500 | &nbsp;&nbsp; 59381 |
| Sysmex Corp. (Japan)  | &nbsp;&nbsp; 4800 | &nbsp;&nbsp; 83555 |
|  |  | &nbsp;&nbsp; $364796 |
| **INSURANCE – 8.5%** |  |  |
| Brown & Brown Inc. (United States)  | &nbsp;&nbsp; 976 | &nbsp;&nbsp; $108209 |
| Chubb Ltd. (United States)  | &nbsp;&nbsp; 206 | &nbsp;&nbsp; 59682 |
| Markel Group Inc. (United States) <sup>(a)</sup> | &nbsp;&nbsp; 85 | &nbsp;&nbsp; 169776 |
|  |  | &nbsp;&nbsp; $337667 |
| **MACHINERY – 8.3%** |  |  |
| Atlas Copco AB (Sweden)  | &nbsp;&nbsp; 4621 | &nbsp;&nbsp; $74703 |
| Knorr-Bremse A.G. (Germany)  | &nbsp;&nbsp; 1102 | &nbsp;&nbsp; 106891 |
| Lincoln Electric Holdings Inc. (United States)  | &nbsp;&nbsp; 298 | &nbsp;&nbsp; 61781 |
| Techtronic Industries Co. Ltd. (Hong Kong)  | &nbsp;&nbsp; 3500 | &nbsp;&nbsp; 38619 |
| Westinghouse Air Brake Technologies Corp. (United States)  | &nbsp;&nbsp; 234 | &nbsp;&nbsp; 48988 |
|  |  | &nbsp;&nbsp; $330982 |
| **SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT – 7.9%** |  |  |
| KLA Corp. (United States)  | &nbsp;&nbsp; 128 | &nbsp;&nbsp; $114655 |
| Taiwan Semiconductor Manufacturing Co. Ltd. (Taiwan)  | &nbsp;&nbsp; 2000 | &nbsp;&nbsp; 73138 |
| Texas Instruments Inc. (United States)  | &nbsp;&nbsp; 613 | &nbsp;&nbsp; 127271 |
|  |  | &nbsp;&nbsp; $315064 |
| **TRADING COMPANIES & DISTRIBUTORS – 7.5%** |  |  |
| MonotaRO Co. Ltd. (Japan)  | &nbsp;&nbsp; 5500 | &nbsp;&nbsp; $108272 |
| Watsco Inc. (United States)  | &nbsp;&nbsp; 435 | &nbsp;&nbsp; 192105 |
|  |  | &nbsp;&nbsp; $300377 |
| **AUTOMOBILES – 7.2%** |  |  |
| Mahindra & Mahindra Ltd. (India)  | &nbsp;&nbsp; 7771 | &nbsp;&nbsp; $288438 |
| **ELECTRICAL EQUIPMENT – 5.6%** |  |  |
| ABB Ltd. (Switzerland)  | &nbsp;&nbsp; 1505 | &nbsp;&nbsp; $90193 |

---

------

**Stewart Investors Worldwide Leaders Fund** 

**PORTFOLIO OF INVESTMENTS** (Continued)

June 30, 2025 (Unaudited)

---

| | | |
|:---|:---|:---|
| **COMMON STOCKS — Continued** | Shares | Fair Value |
| WEG S.A. (Brazil)  | &nbsp;&nbsp; 16800 | &nbsp;&nbsp; $132282 |
|  |  | &nbsp;&nbsp; $222475 |
| **BANKS – 5.0%** |  |  |
| HDFC Bank Ltd. (India)  | &nbsp;&nbsp; 8533 | &nbsp;&nbsp; $199207 |
| **TECHNOLOGY HARDWARE, STORAGE & PERIPHERALS – 4.9%** |  |  |
| Samsung Electronics Co. Ltd. (South Korea)  | &nbsp;&nbsp; 4457 | &nbsp;&nbsp; $197096 |
| **COMMUNICATIONS EQUIPMENT – 4.7%** |  |  |
| Arista Networks Inc. (United States) <sup>(a)</sup> | &nbsp;&nbsp; 1825 | &nbsp;&nbsp; $186716 |
| **AIR FREIGHT & LOGISTICS – 3.0%** |  |  |
| Deutsche Post A.G. (Germany)  | &nbsp;&nbsp; 2572 | &nbsp;&nbsp; $119135 |
| **BROADLINE RETAIL – 2.9%** |  |  |
| Alibaba Group Holding Ltd. (China)  | &nbsp;&nbsp; 8200 | &nbsp;&nbsp; $116079 |
| **CHEMICALS – 2.7%** |  |  |
| Linde PLC (United States)  | &nbsp;&nbsp; 230 | &nbsp;&nbsp; $107911 |
| **GROUND TRANSPORTATION – 2.6%** |  |  |
| Old Dominion Freight Line Inc. (United States)  | &nbsp;&nbsp; 651 | &nbsp;&nbsp; $105657 |
| **PERSONAL CARE PRODUCTS – 2.1%** |  |  |
| Beiersdorf A.G. (Germany)  | &nbsp;&nbsp; 657 | &nbsp;&nbsp; $82584 |
| **BUILDING PRODUCTS – 1.7%** |  |  |
| Carlisle Cos. Inc. (United States)  | &nbsp;&nbsp; 186 | &nbsp;&nbsp; $69452 |
| **HOUSEHOLD DURABLES – 1.7%** |  |  |
| NVR Inc. (United States) <sup>(a)</sup> | &nbsp;&nbsp; 9 | &nbsp;&nbsp; $66471 |

---

------

**Stewart Investors Worldwide Leaders Fund** 

**PORTFOLIO OF INVESTMENTS** (Continued)

June 30, 2025 (Unaudited)

---

| | | |
|:---|:---|:---|
| **COMMON STOCKS — Continued** | Shares | Fair Value |
| **HOTELS, RESTAURANTS & LEISURE – 1.0%** |  |  |
| Trip.com Group Ltd. (China)  | &nbsp;&nbsp; 650 | &nbsp;&nbsp; $38067 |
| **TOTAL COMMON STOCKS–97.2%** (Cost $3,780,937) |  | &nbsp;&nbsp; $3877673 |
| **TOTAL INVESTMENTS–97.2%** (Cost $3,780,937) |  | &nbsp;&nbsp; $3877673 |
| Other Assets in Excess of Liabilities – 2.8% |  | &nbsp;&nbsp; $113524 |
| **NET ASSETS–100.0%** |  | &nbsp;&nbsp; $3991197 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;(a) Non-income producing security.

------

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Datum One Series Trust

- **b. Investment Company Act file number:** 811-23556

- **c. CIK number of Registrant:** 0001806095

- **d. LEI of Registrant:** 5493003NXAX6X00BBF25

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

  - **Street Address 1:** 50 S. LaSalle Street

  - **City:** CHICAGO

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60603

  - **Telephone number:** 312-557-4100

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

- **a. Name of Series:** Stewart Investors Worldwide Leaders Fund

- **b. EDGAR series identifier (if any):** S000089901

- **c. LEI of Series:** 254900PGAHULDWM8JU25

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

- **a. Date of fiscal year-end:** 2026-03-31

- **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:** $4011967.42

**Total Liabilities:** $20770.50

**Net Assets:** $3991196.92

**Cash Not Reported:** $123594.42

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000256744 |  |  | 2.30%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  |  |  |
| Month 2  |  |  |
| Month 3  | $0.00                    | $96736.46                                  |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Mahindra & Mahindra Ltd.                     | Mahindra & Mahindra Ltd. INR5                      | CUSIP: Y54164150<br>LEI: 3358003B573EV4KB4Z02 | Long             | EC               | CORP              | IN        |      7771 | NS      | $288438.05    | 7.23%             |  |  |  | No            |                  2 | On Loan: No      |
| Arista Networks Inc                          | Arista Networks Inc COM SHS                        | CUSIP: 040413205<br>LEI: 635400H1WKBLOQERUU95 | Long             | EC               | CORP              | US        |      1825 | NS      | $186715.75    | 4.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Carlisle Companies Inc.                      | Carlisle Companies Inc. COM USD1                   | CUSIP: 142339100<br>LEI: XR64VGX1ZPX6G7ZN7Z11 | Long             | EC               | CORP              | US        |       186 | NS      | $69452.40     | 1.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Linde PLC                                    | Linde PLC COM EUR0.001                             | CUSIP: G54950103<br>LEI: 5299003QR1WT0EF88V51 | Long             | EC               | CORP              | IE        |       230 | NS      | $107911.40    | 2.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Weg SA                                       | Weg SA COM NPV                                     | CUSIP: P9832B129<br>LEI: 254900NKQV127YFRO022 | Long             | EC               | CORP              | BR        |     16800 | NS      | $132282.49    | 3.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlas Copco AB                               | Atlas Copco AB SER'A'NPV                           | CUSIP: W1R924252<br>LEI: 213800T8PC8Q4FYJZR07 | Long             | EC               | CORP              | SE        |      4621 | NS      | $74703.13     | 1.87%             |  |  |  | No            |                  2 | On Loan: No      |
| Trip.com Group Ltd.                          | Trip.com Group Ltd. USD0.00125                     | CUSIP: G9066F101<br>LEI: 2549004RMYDSRQL4KW41 | Long             | EC               | CORP              | KY        |       650 | NS      | $38066.95     | 0.95%             |  |  |  | No            |                  2 | On Loan: No      |
| Chubb Ltd.                                   | Chubb Ltd. ORD CHF24.15                            | CUSIP: H1467J104<br>LEI: E0JAN6VLUDI1HITHT809 | Long             | EC               | CORP              | CH        |       206 | NS      | $59682.32     | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| HDFC Bank Ltd.                               | HDFC Bank Ltd. INR1                                | CUSIP: Y3119P190<br>LEI: 335800ZQ6I4E2JXENC50 | Long             | EC               | CORP              | IN        |      8533 | NS      | $199206.83    | 4.99%             |  |  |  | No            |                  2 | On Loan: No      |
| Techtronic Industries Co. Ltd.               | Techtronic Industries Co. Ltd. NPV                 | CUSIP: Y8563B159<br>LEI: 549300HZW2SBE758OK89 | Long             | EC               | CORP              | HK        |      3500 | NS      | $38618.92     | 0.97%             |  |  |  | No            |                  2 | On Loan: No      |
| HOYA Corp.                                   | HOYA Corp. NPV                                     | CUSIP: J22848105<br>LEI: 353800X4VR3BHEUCJB42 | Long             | EC               | CORP              | JP        |       500 | NS      | $59381.06     | 1.49%             |  |  |  | No            |                  2 | On Loan: No      |
| Samsung Electronics Co Ltd.                  | Samsung Electronics Co Ltd. KRW100                 | CUSIP: Y74718100<br>LEI: 9884007ER46L6N7EI764 | Long             | EC               | CORP              | KR        |      4457 | NS      | $197095.77    | 4.94%             |  |  |  | No            |                  2 | On Loan: No      |
| Sysmex Corp.                                 | Sysmex Corp. NPV                                   | CUSIP: J7864H102<br>LEI: 5299001ZO4CKWACMZI55 | Long             | EC               | CORP              | JP        |      4800 | NS      | $83554.64     | 2.09%             |  |  |  | No            |                  2 | On Loan: No      |
| Taiwan Semiconductor Manufacturing Co., Ltd. | Taiwan Semiconductor Manufacturing Co., Ltd. TWD10 | CUSIP: Y84629107<br>LEI: 549300KB6NK5SBD14S87 | Long             | EC               | CORP              | TW        |      2000 | NS      | $73138.71     | 1.83%             |  |  |  | No            |                  2 | On Loan: No      |
| Knorr-Bremse AG                              | Knorr-Bremse AG NPV                                | CUSIP: D4S43E114<br>LEI: 5299001GRRO0Z25YZT52 | Long             | EC               | CORP              | DE        |      1102 | NS      | $106890.67    | 2.68%             |  |  |  | Yes           |                  2 | On Loan: No      |
| ABB Ltd.                                     | ABB Ltd. CHF0.12 (REGD)                            | CUSIP: H0010V101<br>LEI: 5493000LKVGOO9PELI61 | Long             | EC               | CORP              | CH        |      1505 | NS      | $90192.90     | 2.26%             |  |  |  | No            |                  2 | On Loan: No      |
| BioMerieux SA                                | BioMerieux SA NPV                                  | CUSIP: F1149Y232<br>LEI: 549300AK8Y0LBIQ4T071 | Long             | EC               | CORP              | FR        |      1604 | NS      | $221859.90    | 5.56%             |  |  |  | No            |                  2 | On Loan: No      |
| Alibaba Group Holding Ltd.                   | Alibaba Group Holding Ltd. USD0.000003125          | CUSIP: G01719114<br>LEI: 5493001NTNQJDH60PM02 | Long             | EC               | CORP              | KY        |      8200 | NS      | $116078.79    | 2.91%             |  |  |  | No            |                  2 | On Loan: No      |
| KLA Corp.                                    | KLA Corp. COM USD0.001                             | CUSIP: 482480100<br>LEI: 549300H0BF5JCG96TJ81 | Long             | EC               | CORP              | US        |       128 | NS      | $114654.72    | 2.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Lincoln Electric Holdings Inc.               | Lincoln Electric Holdings Inc. COM NPV             | CUSIP: 533900106<br>LEI: BIMGBY40SIN95O01BN93 | Long             | EC               | CORP              | US        |       298 | NS      | $61781.36     | 1.55%             |  |  |  | No            |                  1 | On Loan: No      |
| NVR Inc                                      | NVR Inc COM USD0.01                                | CUSIP: 62944T105<br>LEI: 529900RWXR4JI3JYTV70 | Long             | EC               | CORP              | US        |         9 | NS      | $66470.94     | 1.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Deutsche Post AG                             | Deutsche Post AG NPV(REGD)                         | CUSIP: D19225107<br>LEI: 8ER8GIG7CSMVD8VUFE78 | Long             | EC               | CORP              | DE        |      2572 | NS      | $119134.68    | 2.98%             |  |  |  | No            |                  2 | On Loan: No      |
| Markel Group Inc                             | Markel Group Inc COM NPV                           | CUSIP: 570535104<br>LEI: 549300SCNO12JLWIK605 | Long             | EC               | CORP              | US        |        85 | NS      | $169775.60    | 4.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Brown & Brown Inc                            | Brown & Brown Inc COM USD0.10                      | CUSIP: 115236101<br>LEI: 549300PC8KTJ71XKFY89 | Long             | EC               | CORP              | US        |       976 | NS      | $108209.12    | 2.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Roper Technologies Inc                       | Roper Technologies Inc COM USD0.01                 | CUSIP: 776696106<br>LEI: 54930003T4SXCIWVXY35 | Long             | EC               | CORP              | US        |       193 | NS      | $109400.12    | 2.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Synopsys Inc                                 | Synopsys Inc COM USD0.01                           | CUSIP: 871607107<br>LEI: QG7T915N9S0NY5UKNE63 | Long             | EC               | CORP              | US        |       174 | NS      | $89206.32     | 2.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Texas Instruments Incorporated               | Texas Instruments Incorporated COM USD1.00         | CUSIP: 882508104<br>LEI: WDJNR2L6D8RWOEB8T652 | Long             | EC               | CORP              | US        |       613 | NS      | $127271.06    | 3.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Watsco Inc                                   | Watsco Inc COM USD0.50                             | CUSIP: 942622200<br>LEI: 549300F1Y3LN5BX5WN75 | Long             | EC               | CORP              | US        |       435 | NS      | $192104.70    | 4.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Wabtec Corp                                  | Wabtec Corp COM USD0.01                            | CUSIP: 929740108<br>LEI: 06BTX5UWZD0GQ5N5Y745 | Long             | EC               | CORP              | US        |       234 | NS      | $48987.90     | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Monotaro CoLtd                               | Monotaro CoLtd NPV                                 | CUSIP: J46583100<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |      5500 | NS      | $108272.21    | 2.71%             |  |  |  | No            |                  2 | On Loan: No      |
| Old Dominion Freight Line Inc.               | Old Dominion Freight Line Inc. COM USD0.10         | CUSIP: 679580100<br>LEI: 5299009TWK32WE417T96 | Long             | EC               | CORP              | US        |       651 | NS      | $105657.30    | 2.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Fortinet Inc                                 | Fortinet Inc COM USD0.001                          | CUSIP: 34959E109<br>LEI: 549300O0QJWDBAS0QX03 | Long             | EC               | CORP              | US        |      2184 | NS      | $230892.48    | 5.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Beiersdorf AG                                | Beiersdorf AG NPV                                  | CUSIP: D08792109<br>LEI: L47NHHI0Z9X22DV46U41 | Long             | EC               | CORP              | DE        |       657 | NS      | $82583.57     | 2.07%             |  |  |  | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-07-30

**Name of Applicant:** Datum One Series Trust

**Signature:** Tracy L. Dotolo

**Name of Signer:** Tracy L. Dotolo

**Title:** Treasurer