% 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 UPMMY 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 | RHUMBLINE ADVISERS | 8,7448,744 | $272,804 | — | — |
| 2 | GAMMA Investing LLC | 3,5983,598 | $112,258 | — | ADD 259% |
| 3 | Salomon & Ludwin, LLC | 754754 | $23,246 | — | ADD 224% |
| 4 | PNC FINANCIAL SERVICES GROUP, INC. | 299299 | $9,329 | — | TRIM -10% |
| 5 | Ramirez Asset Management, Inc. | 103103 | $3,181 | — | — |
| 6 | Ancora Advisors LLC | 1212 | $374 | — | TRIM -66% |
| 7 | HANTZ FINANCIAL SERVICES, INC. | 55 | $0 | — | NEW |
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 |
|---|---|---|---|---|---|---|---|
| RHUMBLINE ADVISERS | 7K | 7K | 6K | 6K | 9K | 9K | $272,804 |
| GAMMA Investing LLC | 2K | 3K | 1K | 1K | 1K | 4K | $112,258 |
| Salomon & Ludwin, LLC | — | — | 6 | 400 | 233 | 754 | $23,246 |
| PNC FINANCIAL SERVICES GROUP, INC. | 720 | 751 | 436 | 392 | 334 | 299 | $9,329 |
| Ramirez Asset Management, Inc. | — | — | — | — | 103 | 103 | $3,181 |
| Ancora Advisors LLC | — | — | — | — | 35 | 12 | $374 |
| HANTZ FINANCIAL SERVICES, INC. | — | — | — | — | — | 5 | $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 | |
|---|---|---|---|
| GAMMA Investing LLC | +2,596 | $80,995 | ADD |
| Salomon & Ludwin, LLC | +521 | $16,255 | ADD |
| HANTZ FINANCIAL SERVICES, INC. | +5 | $156 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Signature Equity Partners, LLC | −35 | $1,092 | CLOSE |
| PNC FINANCIAL SERVICES GROUP, INC. | −35 | $1,092 | TRIM |
| Ancora Advisors LLC | −23 | $718 | TRIM |
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 | 7 | 13,515 | — | $421,192 |
| 2025-Q4 | 7 | 10,486 | — | $303,412 |
| 2025-Q3 | 4 | 8,493 | — | $232,086 |
| 2025-Q2 | 5 | 8,108 | — | $221,329 |
| 2025-Q1 | 5 | 11,038 | — | $295,369 |
| 2024-Q4 | 3 | 10,383 | — | $286,877 |
| 2024-Q3 | 3 | 8,982 | — | $300,982 |
| 2024-Q2 | 4 | 8,899 | — | $309,946 |
| 2024-Q1 | 4 | 6,798 | — | $226,641 |
| 2023-Q4 | 3 | 4,439 | — | $166,288 |
| 2023-Q3 | 5 | 4,765 | — | $162,675 |
| 2023-Q2 | 6 | 1,030,145 | — | $31M |
| 2023-Q1 | 4 | 964,170 | — | $32M |
| 2022-Q4 | 4 | 883,561 | — | $33M |
| 2022-Q3 | 4 | 881,955 | — | $28M |
| 2022-Q2 | 5 | 730,247 | — | $22M |
| 2022-Q1 | 5 | 693,581 | — | $23M |
| 2021-Q4 | 5 | 866,956 | — | $33M |
| 2021-Q3 | 5 | 890,360 | — | $31M |
| 2021-Q2 | 6 | 997,678 | — | $38M |
| 2021-Q1 | 7 | 1,813,445 | — | $66M |
| 2020-Q4 | 7 | 1,950,785 | — | $72M |
| 2020-Q3 | 6 | 1,980,270 | — | $60M |
| 2020-Q2 | 4 | 2,223,661 | — | $64M |
| 2020-Q1 | 5 | 2,605,248 | — | $73M |
| 2019-Q4 | 8 | 2,792,428 | — | $97M |
| 2019-Q3 | 8 | 2,774,428 | — | $82M |
