% of shares outstanding is not shown for SMCX: 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 SMCX 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 | 160,382160,382 | $1M | — | NEW |
| 2 | GOLDMAN SACHS GROUP INC | 120,000120,000 | $1M | — | NEW |
| 3 | Jump Financial, LLC | 63,15963,159 | $539,378 | — | NEW |
| 4 | HRT FINANCIAL LP | 43,14843,148 | $368,000 | — | NEW |
| 5 | CITADEL ADVISORS LLC | 43,07643,076 | $367,869 | — | NEW |
| 6 | IMC-Chicago, LLC | 29,55629,556 | $252,408 | — | NEW |
| 7 | Belvedere Trading LLC | 26,61626,616 | $227,301 | — | NEW |
| 8 | JANE STREET GROUP, LLC | 17,79717,797 | $151,986 | — | NEW |
| 9 | UBS Group AG | 13,74413,744 | $117,374 | — | NEW |
| 10 | CITIGROUP INC | 4,1504,150 | $35,441 | — | NEW |
| 11 | SIMPLEX TRADING, LLC | 1,3801,380 | $11,785 | — | NEW |
| 12 | Larson Financial Group LLC | 900900 | $7,686 | — | NEW |
| 13 | Tower Research Capital LLC (TRC) | 7575 | $640 | — | 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 |
|---|---|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | — | — | — | — | 160K | $1M |
| GOLDMAN SACHS GROUP INC | — | — | — | — | — | 120K | $1M |
| Jump Financial, LLC | — | — | — | — | — | 63K | $539,378 |
| HRT FINANCIAL LP | — | — | — | — | — | 43K | $368,000 |
| CITADEL ADVISORS LLC | — | — | — | — | — | 43K | $367,869 |
| IMC-Chicago, LLC | — | — | — | — | — | 30K | $252,408 |
| Belvedere Trading LLC | — | — | — | — | — | 27K | $227,301 |
| JANE STREET GROUP, LLC | — | — | — | — | — | 18K | $151,986 |
| UBS Group AG | — | — | — | — | — | 14K | $117,374 |
| CITIGROUP INC | — | — | — | — | — | 4K | $35,441 |
| SIMPLEX TRADING, LLC | — | — | — | — | — | 1K | $11,785 |
| Larson Financial Group LLC | — | — | — | — | — | 900 | $7,686 |
| Tower Research Capital LLC (TRC) | — | — | — | — | — | 75 | $640 |
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.
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 | |
|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | +160,382 | $1M | OPEN |
| GOLDMAN SACHS GROUP INC | +120,000 | $1M | OPEN |
| Jump Financial, LLC | +63,159 | $539,378 | OPEN |
| HRT FINANCIAL LP | +43,148 | $368,484 | OPEN |
| CITADEL ADVISORS LLC | +43,076 | $367,869 | 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).
