ARMOUR Residential REIT, Inc.
US ˙ NYSE ˙ US0423155078

SecurityARR / ARMOUR Residential REIT, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership142,952 shares
Latest Disclosed Value $ 2,403,023
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 49.52% increase in ownership of ARR / ARMOUR Residential REIT, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 142,952 shares of ARMOUR Residential REIT, Inc. (US:ARR) valued at $2,403,023 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 95,607 shares of ARMOUR Residential REIT, Inc.. This represents a change in shares of 49.52% during the quarter. The current value of the position is $2,445,909 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-08-26 2025-06-30 NP ARMOUR Residential REIT EC US0423157058 142,952 47,345 49.52 2,403 47.06 0.0540
2025-05-28 2025-03-31 NP ARMOUR Residential REIT EC US0423157058 95,607 10,970 12.96 1,635 2.38 0.0392
2025-02-25 2024-12-31 NP ARMOUR Residential REIT EC US0423157058 84,637 -12,513 -12.88 1,596 -19.43 0.0349
2024-11-26 2024-09-30 NP ARMOUR Residential REIT EC US0423157058 97,150 2,929 3.11 1,982 8.49 0.0375
2024-08-26 2024-06-30 NP ARMOUR Residential REIT EC US0423157058 94,221 10,402 12.41 1,826 10.20 0.0372
2024-05-28 2024-03-31 NP ARMOUR Residential REIT EC US0423157058 83,819 0 0.00 1,657 2.35 0.0346
2024-02-26 2023-12-31 NP ARMOUR Residential REIT EC US0423157058 83,819 -306,874 -78.55 1,619 -2.47 0.0346
2023-11-28 2023-09-30 NP ARMOUR Residential REIT EC US0423155078 390,693 55,293 16.49 1,660 -7.11 0.0433
2023-08-25 2023-06-30 NP ARMOUR Residential REIT EC US0423155078 335,400 80,507 31.58 1,788 33.56 0.0424
2023-05-26 2023-03-31 NP ARMOUR Residential REIT EC US0423155078 254,893 72,413 39.68 1,338 30.28 0.0356
2023-02-24 2022-12-31 NP ARMOUR Residential REIT EC US0423155078 182,480 8,151 4.68 1,027 21.11 0.0283
2022-11-25 2022-09-30 NP ARMOUR Residential REIT EC US0423155078 174,329 15,637 9.85 849 -24.08 0.0243
2022-08-25 2022-06-30 NP ARMOUR Residential REIT EC US0423155078 158,692 19,179 13.75 1,117 -4.61 0.0308
2022-05-26 2022-03-31 NP ARMOUR Residential REIT EC US0423155078 139,513 6,776 5.10 1,172 -10.06 0.0273
2022-02-25 2021-12-31 NP ARMOUR Residential REIT EC US0423155078 132,737 13,438 11.26 1,302 1.24 0.0282
2021-11-24 2021-09-30 NP ARMOUR Residential REIT EC US0423155078 119,299 21,975 22.58 1,286 15.75 0.0283
2021-08-26 2021-06-30 NP ARMOUR Residential REIT EC US0423155078 97,324 0 0.00 1,111 -6.40 0.0238
2021-05-27 2021-03-31 NP ARMOUR Residential REIT EC US0423155078 97,324 -3,677 -3.64 1,187 9.00 0.0269
2021-02-25 2020-12-31 NP ARMOUR Residential REIT EC US0423155078 101,001 0 0.00 1,090 13.44 0.0279
2020-11-25 2020-09-30 NP ARMOUR Residential REIT EC US0423155078 101,001 -9,704 -8.77 961 -7.60 0.0308
2020-08-27 2020-06-30 NP ARMOUR Residential REIT EC US0423155078 110,705 14,812 15.45 1,040 23.10 0.0340
2020-06-01 2020-03-31 NP ARMOUR Residential REIT EC US0423155078 95,893 6,464 7.23 845 -43.62 0.0345
2019-11-27 2019-09-30 NP ARMOUR Residential REIT EC US0423155078 89,429 89,429 1,498 0.0495
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.