% of shares outstanding is not shown for STOX: 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 STOX 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 | Bank of New York Mellon Corp | 2,093,7502.1M | $57M | — | — |
| 2 | Cooper Financial Group | 869,916869,916 | $24M | — | NEW |
| 3 | Cambridge Investment Research Advisors, Inc. | 172,327172,327 | $5M | — | ADD 475% |
| 4 | Simplicity Wealth,LLC | 24,46724,467 | $661,781 | — | NEW |
| 5 | GTS SECURITIES LLC | 16,79716,797 | $454,325 | — | NEW |
| 6 | JANE STREET GROUP, LLC | 13,31013,310 | $360,008 | — | NEW |
| 7 | Horizon Investments, LLC | 1,6841,684 | $45,552 | — | ADD 100% |
| 8 | OSAIC HOLDINGS, INC. | 442442 | $11,956 | — | — |
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 |
|---|---|---|---|---|---|---|---|
| Bank of New York Mellon Corp | — | — | — | 2.3M | 2.1M | 2.1M | $57M |
| Cooper Financial Group | — | — | — | — | — | 870K | $24M |
| Cambridge Investment Research Advisors, Inc. | — | — | — | — | 30K | 172K | $5M |
| Simplicity Wealth,LLC | — | — | — | — | — | 24K | $661,781 |
| GTS SECURITIES LLC | — | — | 42K | 17K | — | 17K | $454,325 |
| JANE STREET GROUP, LLC | — | — | — | — | — | 13K | $360,008 |
| Horizon Investments, LLC | — | — | — | 540 | 842 | 2K | $45,552 |
| OSAIC HOLDINGS, INC. | — | — | — | — | 442 | 442 | $11,956 |
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 | 8 | 3,192,693 | — | $86M |
| 2025-Q4 | 4 | 2,101,600 | — | $60M |
| 2025-Q3 | 3 | 2,277,376 | — | $63M |
| 2025-Q2 | 1 | 41,544 | — | $1M |
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 | |
|---|---|---|---|
| Cooper Financial Group | +869,916 | $24M | OPEN |
| Cambridge Investment Research Advisors, Inc. | +142,357 | $4M | ADD |
| Simplicity Wealth,LLC | +24,467 | $661,781 | OPEN |
| Bank of New York Mellon Corp | +23,404 | $633,029 | — |
| GTS SECURITIES LLC | +16,797 | $454,324 | OPEN |
| 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 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).
