# EDGAR Filing Document

**Accession Number:** 0001758583
**File Stem:** 0000910472-26-002798
**Filing Date:** 2026-2
**Character Count:** 5109
**Document Hash:** 319ec9040f4d21103ca0cec91b8aaae7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000910472-26-002798.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0000910472-26-002798

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Arca U.S. Treasury Fund
- **CENTRAL INDEX KEY:** 0001758583

**ORGANIZATION NAME:**
- **EIN:** 832441527
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-23392
- **FILM NUMBER:** 26683521

**BUSINESS ADDRESS:**
- **STREET 1:** 4151 REDWOOD AVENUE
- **STREET 2:** SUITE 206
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90066
- **BUSINESS PHONE:** 4242898066

**MAIL ADDRESS:**
- **STREET 1:** 4151 REDWOOD AVENUE
- **STREET 2:** SUITE 206
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90066

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Arca U.S. Treasury Fund

- **b. Investment Company Act file number:** 811-23392

- **c. CIK number of Registrant:** 0001758583

- **d. LEI of Registrant:** 5493003T15791YSVP032

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

  - **Street Address 1:** 4151 Redwood Avenue

  - **City:** Los Angeles

  - **State:** CA

  - **Foreign country:** US

  - **Zip / Postal Code:** 90066

  - **Telephone number:** 424-289-8066

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

- **a. Name of Series:** Arca US Treasury Fund

- **c. LEI of Series:** 5493003T15791YSVP032

**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:** $602590.42

**Total Liabilities:** $158993.88

**Net Assets:** $443596.54

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class        | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID N/A | 0.00%                | 0.00%                | 0.94%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $0.00                    | $-27.80                                    |
| Month 2  | $0.00                    | $-47.25                                    |
| Month 3  | $0.00                    | $120.84                                    |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Fidelity Colchester Street Trust | FMR-TREASURY-III | CUSIP: 316175884<br>LEI: 549300SHPEJB1OPRCV46 | Long             | STIV             | RF                | US        |     30631 | PA      | $30631.01     | 6.91%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury Bills     | B 03/19/26       | CUSIP: 912797PV3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    160000 | PA      | $158813.22    | 35.80%            | 2026-03-19      | Fixed         | 0.00%                 | No            |                  2 | On Loan: No      |
| United States Treasury Bills     | B 06/11/26       | CUSIP: 912797QX8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    160000 | PA      | $157529.16    | 35.51%            | 2026-06-11      | Fixed         | 0.00%                 | No            |                  2 | On Loan: No      |
| United States Treasury Bills     | B 03/26/26       | CUSIP: 912797SC2<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    121000 | PA      | $120020.34    | 27.06%            | 2026-03-26      | Fixed         | 0.00%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2026-01-28

**Name of Applicant:** Arca U.S. Treasury Fund

**Signature:** Vance Sanders

**Name of Signer:** Vance Sanders

**Title:** Treasurer