Security record · archived quarter
MSFX
name pending profile ingest
3Tracked holders
+1Δ holders
44.91KShares held
$683,949Reported value
+2New positions
−1Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Citadel Advisors ✦ | 37.55K | New | $571,826 | 0.0% | New | 1 | SEC ↗ |
| 2 | Optiver Holding B.V. | 6.65K | +172.6% | $101,249 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Simplex Trading, Llc | 714 | New | $10,874 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $571,826 | 0.0% |
| Simplex Trading, Llc | $10,874 | 0.0% |
Exited
| Belvedere Trading LLC | $331,345 | was 0.1% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 4 holders, 45.17K shares, $687,957 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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