% of shares outstanding is not shown for IMRA: 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 lands with its cohort — the cohort is size-matched, so it needs a market cap for IMRA in the served universe — that lands with the next screener build.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 23,49223,492 | $300,254 | — | NEW |
| 2 | JANE STREET GROUP, LLC | 14,27514,275 | $182,450 | — | NEW |
Ranked by each filer’s own reported value, not shares.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | +23,492 | $300,254 | OPEN |
| JANE STREET GROUP, LLC | +14,275 | $182,450 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| FMR LLC | −77 | $984 | CLOSE |
| Arax Advisory Partners | −1 | $13 | CLOSE |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | — | 43K | — | — | 23K | $300,254 |
| JANE STREET GROUP, LLC | — | — | 25K | — | — | 14K | $182,450 |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Holders only — breaks = no 13F.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.