% of shares outstanding is not shown for HOOZ: 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 HOOZ 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 | Optiver Holding B.V. | 15,45715,457 | $629,254 | — | TRIM -48% |
| 2 | Genesis Financial Group, LLC | 7,8787,878 | $320,713 | — | NEW |
| 3 | GTS SECURITIES LLC | 6,3236,323 | $257,409 | — | NEW |
| 4 | IMC-Chicago, LLC | 6,0806,080 | $247,517 | — | NEW |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 4,9534,953 | $201,637 | — | NEW |
| 6 | Tower Research Capital LLC (TRC) | 3030 | $1,221 | — | 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 |
|---|---|---|---|---|---|---|---|
| Optiver Holding B.V. | — | — | — | — | 30K | 15K | $629,254 |
| Genesis Financial Group, LLC | — | — | — | — | — | 8K | $320,713 |
| GTS SECURITIES LLC | — | — | — | — | — | 6K | $257,409 |
| IMC-Chicago, LLC | — | — | — | — | — | 6K | $247,517 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | — | — | — | — | 5K | $201,637 |
| Tower Research Capital LLC (TRC) | — | — | — | — | — | 30 | $1,221 |
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 | 6 | 40,721 | — | $2M |
| 2025-Q4 | 3 | 30,777 | — | $701,716 |
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 | |
|---|---|---|---|
| Genesis Financial Group, LLC | +7,878 | $320,713 | OPEN |
| GTS SECURITIES LLC | +6,323 | $257,409 | OPEN |
| IMC-Chicago, LLC | +6,080 | $247,517 | OPEN |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | +4,953 | $201,637 | OPEN |
| Tower Research Capital LLC (TRC) | +30 | $1,221 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Optiver Holding B.V. | −14,413 | $586,753 | TRIM |
| UBS Group AG | −757 | $30,817 | CLOSE |
| SIGNATUREFD, LLC | −150 | $6,107 | 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).
