% 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 OCEA 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 | FNY Investment Advisers, LLC | 600600 | $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 |
|---|---|---|---|---|---|---|---|
| FNY Investment Advisers, LLC | 600 | 600 | 600 | 600 | 600 | 600 | $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.
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 1 | 600 |
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 | |
|---|---|---|---|
| No filer increased its position this quarter. | |||
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| No filer reduced its position this quarter. | |||
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).
| — |
| $0 |
| 2025-Q4 | 1 | 600 | — | $0 |
| 2025-Q3 | 1 | 600 | — | $0 |
| 2025-Q2 | 7 | 812,189 | — | $5,693 |
| 2025-Q1 | 25 | 4,649,663 | — | $247,348 |
| 2024-Q4 | 22 | 3,680,004 | — | $2M |
| 2024-Q3 | 21 | 3,583,566 | — | $3M |
| 2024-Q2 | 36 | 3,960,491 | — | $5M |
| 2024-Q1 | 46 | 4,662,971 | — | $18M |
| 2023-Q4 | 35 | 5,219,360 | — | $3M |
| 2023-Q3 | 39 | 6,201,782 | — | $24M |
| 2023-Q2 | 35 | 6,758,932 | — | $41M |
| 2023-Q1 | 17 | 7,166,739 | — | $48M |
| 2022-Q4 | 43 | 10,397,468 | — | $93M |
| 2022-Q3 | 40 | 10,396,319 | — | $106M |
| 2022-Q2 | 35 | 10,179,246 | — | $103M |
| 2022-Q1 | 34 | 9,864,291 | — | $99M |
| 2021-Q4 | 26 | 8,192,246 | — | $82M |
