# EDGAR Filing Document

**Accession Number:** 0001806095
**File Stem:** 0002066578-26-001557
**Filing Date:** 2026-5
**Character Count:** 21654
**Document Hash:** 040c0e494f669704b10fca26349d747b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002066578-26-001557.hdr.sgml**: 20260528

**ACCESSION NUMBER**: 0002066578-26-001557

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260528

**DATE AS OF CHANGE**: 20260528

**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:** 261031552

**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

### POLAR CAPITAL INTERNATIONAL SMALL COMPANY FUND (Series ID: S000085283)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000250258 | POLAR CAPITAL INTERNATIONAL SMALL COMPANY FUND | PCSCX           |

## 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:** Polar Capital International Small Company Fund

- **b. EDGAR series identifier (if any):** S000085283

- **c. LEI of Series:** 2549007HPIACIDYY7M46

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

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

- **b. Date as of which information is reported:** 2026-03-31

**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:** $115167566.42

**Total Liabilities:** $193747.28

**Net Assets:** $114973819.14

**Cash Not Reported:** $1437148.94

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000250258 | -0.21%               | -5.48%               | -8.64%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-769535.05              | $474303.44                                 |
| Month 2  | $-6804227.11             | $-1348889.32                               |
| Month 3  | $-2478096.56             | $-8520593.84                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Integral Corp.                              | Integral Corp. NPV                                  | CUSIP: J2401C104<br>LEI: 254900LBW5E2GUM0UK59 | Long             | EC               | CORP              | JP        |     80000 | NS      | $1624777.01   | 1.41%             |  |  |  | No            |                  2 | On Loan: No      |
| Hyundai Ezwel Co Limited                    | Hyundai Ezwel Co Limited KRW500                     | CUSIP: Y2R9HR103<br>LEI: N/A                  | Long             | EC               | CORP              | KR        |    295742 | NS      | $1232987.87   | 1.07%             |  |  |  | No            |                  2 | On Loan: No      |
| Exosens SA                                  | Exosens SA EUR0.425                                 | CUSIP: F33896105<br>LEI: 969500R3AKTPEDO9EG76 | Long             | EC               | CORP              | FR        |     84110 | NS      | $6056629.71   | 5.27%             |  |  |  | No            |                  2 | On Loan: No      |
| YouGov PLC                                  | YouGov PLC ORD GBP0.002                             | CUSIP: G9875S112<br>LEI: 213800MZGBGCJIPOBB41 | Long             | EC               | CORP              | GB        |     33128 | NS      | $74103.50     | 0.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Kinaxis Inc                                 | Kinaxis Inc COM NPV                                 | CUSIP: 49448Q109<br>LEI: 5299009VAZ14K7PFUQ15 | Long             | EC               | CORP              | CA        |     10805 | NS      | $1090519.73   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| Hemnet Group Ab                             | Hemnet Group Ab NPV                                 | CUSIP: W3995N162<br>LEI: 5493008VIU67J3HUAR07 | Long             | EC               | CORP              | SE        |     12974 | NS      | $147890.38    | 0.13%             |  |  |  | No            |                  2 | On Loan: No      |
| Baltic Classifieds Group PLC                | Baltic Classifieds Group PLC ORD GBP0.01            | CUSIP: G07167102<br>LEI: 213800I1RPHCFSSQS969 | Long             | EC               | CORP              | GB        |    384197 | NS      | $930597.44    | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Devyser Diagnostics AB                      | Devyser Diagnostics AB NPV                          | CUSIP: W2533X146<br>LEI: 549300RV4Z2K3360CK30 | Long             | EC               | CORP              | SE        |    205120 | NS      | $1640240.63   | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| W.A.G Payment Solutions Plc                 | W.A.G Payment Solutions Plc ORD GBP0.01             | CUSIP: G9417Z103<br>LEI: 213800HU63CWV5J8YK95 | Long             | EC               | CORP              | GB        |   3308196 | NS      | $4685239.58   | 4.08%             |  |  |  | No            |                  1 | On Loan: No      |
| Invisio AB                                  | Invisio AB NPV                                      | CUSIP: W603RD108<br>LEI: 54930054EB7KX3MY2Q11 | Long             | EC               | CORP              | SE        |    214326 | NS      | $5924603.47   | 5.15%             |  |  |  | No            |                  2 | On Loan: No      |
| E Ink Holdings Inc.                         | E Ink Holdings Inc. TWD10                           | CUSIP: Y2266Z100<br>LEI: 529900UOR451FJJYL571 | Long             | EC               | CORP              | TW        |    327300 | NS      | $1427681.17   | 1.24%             |  |  |  | No            |                  2 | On Loan: No      |
| Solum Co. Ltd.                              | Solum Co. Ltd. KRW500                               | CUSIP: Y806G2101<br>LEI: N/A                  | Long             | EC               | CORP              | KR        |    102078 | NS      | $1124132.95   | 0.98%             |  |  |  | No            |                  2 | On Loan: No      |
| Alpha Purchase Co Ltd.                      | Alpha Purchase Co Ltd. NPV                          | CUSIP: J0128X104<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    222800 | NS      | $2285823.94   | 1.99%             |  |  |  | No            |                  2 | On Loan: No      |
| Nordhealth AS                               | Nordhealth AS SER'A'NOK1                            | CUSIP: R5S365106<br>LEI: 549300DMI437CP0K2C23 | Long             | EC               | CORP              | NO        |    319608 | NS      | $911006.08    | 0.79%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Raspberry Pi Holdings PLC                   | Raspberry Pi Holdings PLC ORD GBP0.0025             | CUSIP: G7385Z105<br>LEI: 984500F5FB0E4FEBED17 | Long             | EC               | CORP              | GB        |    214674 | NS      | $1221244.59   | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Funding Circle Holdings PLC                 | Funding Circle Holdings PLC ORD GBP0.001            | CUSIP: G3691F107<br>LEI: 2138003EK6UAINBBUS19 | Long             | EC               | CORP              | GB        |    959804 | NS      | $1626107.75   | 1.41%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Auction Technology Group PLC                | Auction Technology Group PLC ORD GBP0.0001          | CUSIP: G0623K105<br>LEI: 213800U8Q9K2XI3WRE39 | Long             | EC               | CORP              | GB        |    112112 | NS      | $495627.46    | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Corporacion Inmobiliaria Vesta S A B De C V | Corporacion Inmobiliaria Vesta S A B De C V COM NPV | CUSIP: P9781N108<br>LEI: 4469000001BIRIFZJ959 | Long             | EC               | CORP              | MX        |   1328174 | NS      | $4447007.85   | 3.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Money Forward Inc.                          | Money Forward Inc. NPV                              | CUSIP: J4659A103<br>LEI: 35380017JS3GIGP6WN95 | Long             | EC               | CORP              | JP        |     63200 | NS      | $1408715.65   | 1.23%             |  |  |  | No            |                  2 | On Loan: No      |
| Neuren Pharmaceuticals Ltd.                 | Neuren Pharmaceuticals Ltd. NPV                     | CUSIP: Q6634F109<br>LEI: 984500E48D0FDEE7CE63 | Long             | EC               | CORP              | NZ        |    268214 | NS      | $2238349.10   | 1.95%             |  |  |  | No            |                  2 | On Loan: No      |
| Pharmanutra Spa                             | Pharmanutra Spa NPV                                 | CUSIP: T7S298129<br>LEI: 815600F8217BC7733697 | Long             | EC               | CORP              | IT        |     26181 | NS      | $2407145.58   | 2.09%             |  |  |  | No            |                  2 | On Loan: No      |
| Trustpilot Group PLC                        | Trustpilot Group PLC ORD GBP0.01                    | CUSIP: G91044100<br>LEI: 2138002ILUNMGNPSGG46 | Long             | EC               | CORP              | GB        |   1057126 | NS      | $2700479.33   | 2.35%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Rakus Co Ltd.                               | Rakus Co Ltd. NPV                                   | CUSIP: J6S879103<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    220000 | NS      | $1048762.59   | 0.91%             |  |  |  | No            |                  2 | On Loan: No      |
| PolyNovo Ltd.                               | PolyNovo Ltd. NPV                                   | CUSIP: Q7704D107<br>LEI: 529900G0IT1EQMPW7H74 | Long             | EC               | CORP              | AU        |   1848467 | NS      | $1217321.44   | 1.06%             |  |  |  | No            |                  2 | On Loan: No      |
| Bonesupport Holding Ab                      | Bonesupport Holding Ab NPV                          | CUSIP: W2R933137<br>LEI: 549300COLY053IGTLD63 | Long             | EC               | CORP              | SE        |      5072 | NS      | $106126.62    | 0.09%             |  |  |  | Yes           |                  2 | On Loan: No      |
| Redcare Pharmacy N.V                        | Redcare Pharmacy N.V EUR0.02                        | CUSIP: N7975Z103<br>LEI: 529900JK6UXHY1YKZ082 | Long             | EC               | CORP              | NL        |     10590 | NS      | $467764.82    | 0.41%             |  |  |  | Yes           |                  2 | On Loan: No      |
| Mips AB                                     | Mips AB NPV                                         | CUSIP: W5648N127<br>LEI: 549300LZSA4S0L54VQ25 | Long             | EC               | CORP              | SE        |      8795 | NS      | $215809.84    | 0.19%             |  |  |  | No            |                  2 | On Loan: No      |
| Freee K.K.                                  | Freee K.K. NPV                                      | CUSIP: J1513Q100<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    105500 | NS      | $1369636.21   | 1.19%             |  |  |  | No            |                  2 | On Loan: No      |
| M Up Holdings Inc                           | M Up Holdings Inc NPV                               | CUSIP: J47013107<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    427600 | NS      | $1747116.90   | 1.52%             |  |  |  | No            |                  2 | On Loan: No      |
| Lime Technologies AB                        | Lime Technologies AB NPV                            | CUSIP: W5321Z116<br>LEI: 5493008UUFYDF3ZTHC65 | Long             | EC               | CORP              | SE        |     42366 | NS      | $926384.94    | 0.81%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Medley Inc.                                 | Medley Inc. NPV                                     | CUSIP: J41576109<br>LEI: 353800VX74BO9P8XHJ87 | Long             | EC               | CORP              | JP        |     88800 | NS      | $1075604.06   | 0.94%             |  |  |  | No            |                  2 | On Loan: No      |
| Swedencare Ab                               | Swedencare Ab NPV                                   | CUSIP: W942AH117<br>LEI: 549300FZT7YIF6SWX789 | Long             | EC               | CORP              | SE        |    601409 | NS      | $1549076.93   | 1.35%             |  |  |  | No            |                  2 | On Loan: No      |
| Montana Aerospace AG                        | Montana Aerospace AG CHF1.00                        | CUSIP: H55555108<br>LEI: 506700YRG9330Q97U450 | Long             | EC               | CORP              | CH        |     81197 | NS      | $2665293.87   | 2.32%             |  |  |  | Yes           |                  2 | On Loan: No      |
| One Career Inc                              | One Career Inc NPV                                  | CUSIP: J6147T107<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    258000 | NS      | $2985753.46   | 2.60%             |  |  |  | No            |                  2 | On Loan: No      |
| Data Patterns India Limited                 | Data Patterns India Limited INR2                    | CUSIP: Y2000Q101<br>LEI: 894500IFAYOMBFJ0QB53 | Long             | EC               | CORP              | IN        |    187012 | NS      | $6050301.58   | 5.26%             |  |  |  | No            |                  2 | On Loan: No      |
| Apotea AB                                   | Apotea AB NPV                                       | CUSIP: W05022111<br>LEI: 636700XU8GQ8ZL4RNM17 | Long             | EC               | CORP              | SE        |    402589 | NS      | $2702242.34   | 2.35%             |  |  |  | No            |                  2 | On Loan: No      |
| Smartcraft Group AB (Publ)                  | Smartcraft Group AB (Publ) NPV                      | CUSIP: W8T91F103<br>LEI: 636700AT40KQICYD6W91 | Long             | EC               | CORP              | SE        |   1086327 | NS      | $1973752.53   | 1.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Boku Inc                                    | Boku Inc CMN SHS USD0.0001 (DI) REG S CAT 3/144A    | CUSIP: U7744C106<br>LEI: 549300Y4P2ZPFKCZ0C60 | Long             | EC               | CORP              | US        |   1069922 | NS      | $2322484.15   | 2.02%             |  |  |  | Yes           |                  1 | On Loan: No      |
| Autostore Holdings Ltd.                     | Autostore Holdings Ltd. USD0.01                     | CUSIP: G0670A109<br>LEI: 549300KYN3M0LSM5A413 | Long             | EC               | CORP              | BM        |   2277147 | NS      | $2253505.41   | 1.96%             |  |  |  | Yes           |                  2 | On Loan: No      |
| Ipd Group Limited                           | Ipd Group Limited NPV                               | CUSIP: Q496BN109<br>LEI: 984500A59A3EAPEA7D69 | Long             | EC               | CORP              | AU        |    728861 | NS      | $2197575.45   | 1.91%             |  |  |  | No            |                  1 | On Loan: No      |
| Innoscripta SE                              | Innoscripta SE NPV                                  | CUSIP: D3687G104<br>LEI: 894500BA6B025ZEF0T83 | Long             | EC               | CORP              | DE        |     55173 | NS      | $4349231.09   | 3.78%             |  |  |  | No            |                  1 | On Loan: No      |
| Appear ASA                                  | Appear ASA NOK0.03                                  | CUSIP: R0231D103<br>LEI: N/A                  | Long             | EC               | CORP              | NO        |    236689 | NS      | $1486196.41   | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Clavister AB                                | Clavister AB NPV                                    | CUSIP: W2213Q122<br>LEI: 549300WTKDTN285YJC32 | Long             | EC               | CORP              | SE        |   5208933 | NS      | $2328045.51   | 2.02%             |  |  |  | No            |                  2 | On Loan: No      |
| AddLife AB                                  | AddLife AB SER'B'NPV                                | CUSIP: W0R093258<br>LEI: 5493005T3M7CD7XWE013 | Long             | EC               | CORP              | SE        |    159051 | NS      | $2372070.48   | 2.06%             |  |  |  | No            |                  2 | On Loan: No      |
| Vincorion SE                                | Vincorion SE NPV                                    | CUSIP: D8T4XZ106<br>LEI: 5299001T2RB6WJBIRX15 | Long             | EC               | CORP              | DE        |    138344 | NS      | $2595256.92   | 2.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Steyr Motors AG                             | Steyr Motors AG NPV                                 | CUSIP: A82095109<br>LEI: 529900I7M6Z1HG0L8440 | Long             | EC               | CORP              | AT        |     97604 | NS      | $4388526.52   | 3.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Exail Technologies                          | Exail Technologies EUR1.00                          | CUSIP: F4606F100<br>LEI: 549300EWC06TYV07XE53 | Long             | EC               | CORP              | FR        |     38852 | NS      | $5380751.96   | 4.68%             |  |  |  | No            |                  2 | On Loan: No      |
| Astra Microwave Products Limited            | Astra Microwave Products Limited INR2               | CUSIP: Y4066G118<br>LEI: 3358006ZA3N8KZ1R6P76 | Long             | EC               | CORP              | IN        |    494003 | NS      | $4489169.56   | 3.90%             |  |  |  | No            |                  2 | On Loan: No      |
| EO Technics Co                              | EO Technics Co KRW500                               | CUSIP: Y2297V102<br>LEI: N/A                  | Long             | EC               | CORP              | KR        |     10726 | NS      | $2837038.32   | 2.47%             |  |  |  | No            |                  2 | On Loan: No      |
| Cbrain A/S                                  | Cbrain A/S DKK0.25                                  | CUSIP: K17623107<br>LEI: 529900E1K2W6SBYF8W02 | Long             | EC               | CORP              | DK        |     28432 | NS      | $292501.34    | 0.25%             |  |  |  | No            |                  2 | On Loan: No      |
| Wise PLC                                    | Wise PLC CLS A ORD GBP0.01                          | CUSIP: G97229101<br>LEI: 213800LD9XCHIC1C4V71 | Long             | EC               | CORP              | GB        |    237586 | NS      | $2861054.81   | 2.49%             |  |  |  | No            |                  2 | On Loan: No      |
| Hacksaw AB                                  | Hacksaw AB NPV                                      | CUSIP: W42390109<br>LEI: 636700SMLZDCBPNPMJ36 | Long             | EC               | CORP              | SE        |    252757 | NS      | $1588366.94   | 1.38%             |  |  |  | Yes           |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-04-24

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

**Signature:** Tracy L. Dotolo

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

**Title:** Treasurer