% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for USDP in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | Main Street Group, LTD | 1,0901,090 | $4 | — | NEW |
| 2 | Sound Income Strategies, LLC | 100100 | $0 | — | — |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| Main Street Group, LTD | 1K | 1K | 1K | 1K | — | 1K | $4 |
| Sound Income Strategies, LLC | — | — | — | — | 100 | 100 | $0 |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| Main Street Group, LTD | +1,090 | $4 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Garton & Associates Financial Advisors LLC | −201 | $1 | CLOSE |
| EverSource Wealth Advisors, LLC | −39 | $0 | CLOSE |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 2 | 1,190 | — | $4 |
| 2025-Q4 | 3 | 340 | — | $1 |
| 2025-Q3 | 1 | 1,090 | — | $6 |
| 2025-Q2 | 1 | 1,090 | — | $7 |
| 2025-Q1 | 1 | 1,090 | — | $7 |
| 2024-Q4 | 1 | 1,090 | — | $37 |
| 2024-Q3 | 1 | 1,090 | — | $16 |
| 2024-Q2 | 1 | 1,090 | — | $65 |
| 2024-Q1 | 3 | 55,490 | — | $32,677 |
| 2023-Q4 | 4 | 30,650 | — | $4,370 |
| 2023-Q3 | 12 | 1,225,491 | — | $735,309 |
| 2023-Q2 | 15 | 1,807,606 | — | $2M |
| 2023-Q1 | 15 | 2,645,767 | — | $8M |
| 2022-Q4 | 16 | 2,704,461 | — | $9M |
| 2022-Q3 | 18 | 2,814,506 | — | $11M |
| 2022-Q2 | 20 | 3,057,874 | — | $14M |
| 2022-Q1 | 19 | 3,007,929 | — | $18M |
| 2021-Q4 | 20 | 3,259,952 | — | $17M |
| 2021-Q3 | 23 | 3,324,378 | — | $21M |
| 2021-Q2 | 23 | 3,107,066 | — | $23M |
| 2021-Q1 | 24 | 2,937,515 | — | $17M |
| 2020-Q4 | 21 | 3,010,861 | — | $10M |
| 2020-Q3 | 21 | 3,331,958 | — | $11M |
| 2020-Q2 | 22 | 3,438,918 | — | $11M |
| 2020-Q1 | 22 | 5,209,193 | — | $15M |
| 2019-Q4 | 22 | 5,471,348 | — | $54M |
| 2019-Q3 | 24 | 6,164,676 | — | $64M |
| 2019-Q2 | 33 | 5,568,331 | — | $67M |
| 2019-Q1 | 36 | 5,955,009 | — | $64M |
| 2018-Q4 | 33 | 5,795,191 | — | $61M |
| 2018-Q3 | 31 | 5,932,479 | — | $57M |
| 2018-Q2 | 30 | 6,939,922 | — | $75M |
| 2018-Q1 | 25 | 6,017,438 | — | $62M |
| 2017-Q4 | 24 | 6,897,327 | — | $78M |
| 2017-Q3 | 23 | 7,118,050 | — | $78M |
| 2017-Q2 | 31 | 7,842,461 | — | $88M |
| 2017-Q1 | 28 | 5,514,885 | — | $68M |
| 2016-Q4 | 26 | 5,642,895 | — | $89M |
| 2016-Q3 | 23 | 5,550,978 | — | $69M |
| 2016-Q2 | 28 | 5,516,601 | — | $53M |
| 2016-Q1 | 23 | 5,970,113 | — | $50M |
| 2015-Q4 | 22 | 6,949,595 | — | $50M |
| 2015-Q3 | 21 | 7,201,350 | — | $58M |
| 2015-Q2 | 25 | 7,324,940 | — | $86M |
| 2015-Q1 | 20 | 7,580,662 | — | $106M |
| 2014-Q4 | 22 | 7,284,653 | — | $103M |
