% of shares outstanding is not shown for CBXO: this is a fund line, and we hold no cover-page share count for it at any quarter — a fund's shares outstanding move with creations and redemptions rather than with issuance and buybacks, and it is not the SEC cover-page count this percentage is defined against. The figure is withheld rather than computed against a count that does not exist. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for CBXO 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 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 59,01259,012 | $1M | — | ADD 91% |
| 2 | OLD MISSION CAPITAL LLC | 31,20331,203 | $690,210 | — | NEW |
| 3 | JANE STREET GROUP, LLC | 23,61923,619 | $522,452 | — | TRIM -60% |
| 4 | Calamos Advisors LLC | 18,96918,969 | $419,594 | — | — |
| 5 | Ankerstar Wealth, LLC | 14,22414,224 | $314,635 | — | TRIM -30% |
| 6 | Farther Finance Advisors, LLC | 900900 | $19,908 | — | NEW |
| 7 | HARBOUR INVESTMENTS, INC. | 609609 | $13,471 | — | — |
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 |
|---|---|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | — | — | — | 31K | 59K | $1M |
| OLD MISSION CAPITAL LLC | — | — | — | — | — | 31K | $690,210 |
| JANE STREET GROUP, LLC | — | — | — | — | 59K | 24K | $522,452 |
| Calamos Advisors LLC | — | — | — | — | 19K | 19K | $419,594 |
| Ankerstar Wealth, LLC | — | — | — | — | 20K | 14K | $314,635 |
| Farther Finance Advisors, LLC | — | — | — | — | — | 900 | $19,908 |
| HARBOUR INVESTMENTS, INC. | — | — | — | — | 609 | 609 | $13,471 |
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 | 7 | 148,536 | — | $3M |
| 2025-Q4 | 7 | 155,175 | — | $4M |
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 | |
|---|---|---|---|
| OLD MISSION CAPITAL LLC | +31,203 | $690,210 | OPEN |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | +28,105 | $621,683 | ADD |
| Farther Finance Advisors, LLC | +900 | $19,908 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| JANE STREET GROUP, LLC | −35,612 | $787,737 | TRIM |
| Garden State Investment Advisory Services LLC | −15,768 | $348,788 | CLOSE |
| ATX Financial Planning, LLC | −9,348 | $206,778 | CLOSE |
| Ankerstar Wealth, LLC | −6,119 | $135,352 | 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).
