% 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 RCKTW 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 | BOOTHBAY FUND MANAGEMENT, LLC | 36,91236,912 | $132,145 | — | — |
| 2 | RTW INVESTMENTS, LP | 350,000350,000 | $7,210 | — | — |
| 3 | Sio Capital Management, LLC | 400,000400,000 | $7,020 | — | — |
| 4 | CITADEL ADVISORS LLC | 309,997309,997 | $6,510 | — | — |
| 5 | Walleye Capital LLC | 284,345284,345 | $5,858 | — | — |
| 6 | SILVERARC CAPITAL MANAGEMENT, LLC | 104,828104,828 | $2,159 | — | — |
| 7 | LMR Partners LLP | 75,73175,731 | $1,560 | — | — |
| 8 | Affinity Asset Advisors, LLC | 75,00075,000 | $1,178 | — | — |
| 9 | Ancora Advisors LLC | 6,0006,000 | $124 | — | — |
| 10 | UBS Group AG | 3,9813,981 | $84 | — | 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 |
|---|---|---|---|---|---|---|---|
| BOOTHBAY FUND MANAGEMENT, LLC | 37K | 37K | 37K | 37K | 37K | 37K | $132,145 |
| RTW INVESTMENTS, LP | 350K | 350K | 350K | 350K | 350K | 350K | $7,210 |
| Sio Capital Management, LLC | 400K | 400K | 400K | 400K | 400K | 400K | $7,020 |
| CITADEL ADVISORS LLC | 338K | 317K | 315K | 313K | 311K | 310K | $6,510 |
| Walleye Capital LLC | 672K | 666K | 643K | 594K | 284K | 284K | $5,858 |
| SILVERARC CAPITAL MANAGEMENT, LLC | 105K | 105K | 105K | 105K | 105K | 105K | $2,159 |
| LMR Partners LLP | 76K | 76K | 76K | 76K | 76K | 76K | $1,560 |
| Affinity Asset Advisors, LLC | 75K | 75K | 75K | 75K | 75K | 75K | $1,178 |
| Ancora Advisors LLC | 6K | 6K | 6K | 6K | 6K | 6K | $124 |
| UBS Group AG | — | — | — | 1K | — | 4K | $84 |
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.
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 10 | 1,646,794 | — | $163,848 |
| 2025-Q4 | 12 | 1,679,651 | — | $165,102 |
| 2025-Q3 | 11 | 2,003,857 | — | $195,096 |
| 2025-Q2 | 12 | 2,123,512 | — | $161,071 |
| 2025-Q1 | 13 | 2,254,435 | — | $348,872 |
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 | |
|---|---|---|---|
| UBS Group AG | +3,981 | — | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Virtu Financial LLC | −18,746 | — | CLOSE |
| TWO SIGMA SECURITIES, LLC | −16,500 | — | CLOSE |
| CITADEL ADVISORS LLC | −1,492 | — | — |
| Clear Street Group Inc. | −100 | — | 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 quarter-end close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure. No licensed quarter-end close is stored for this line, so the dollar columns are withheld; share counts stand.
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).
| 2024-Q4 | 10 | 2,141,809 | — | $537,904 |
| 2024-Q3 | 14 | 3,223,277 | — | $903,887 |
| 2024-Q2 | 14 | 3,390,491 | — | $1M |
| 2024-Q1 | 15 | 3,286,449 | — | $2M |
| 2023-Q4 | 14 | 2,516,169 | — | $2M |
| 2023-Q3 | 17 | 2,694,265 | — | $1M |
| 2023-Q2 | 16 | 3,320,569 | — | $5M |
| 2023-Q1 | 15 | 3,173,295 | — | $399,077 |
