Institutional holders Insiders (Form 4) Congress
% of shares outstanding held
—
Shares held (13F)
2,932,567
Top holders largest 17 of 17 · Δ vs 2025-Q4 # Holder Shares Value % of shares out Δ QoQ 1 1 EcoR1 Capital, LLC 4,444 4,444 $129,454 — — 2 2 BAKER BROS. ADVISORS LP 833,333 833,333 $13,333 — — 3 3 LMR Partners LLP 648,285 648,285 $10,373 — — 4 4 BRIDGER MANAGEMENT, LLC 442,052 442,052 $7,073 — — 5 5 Euclidean Capital LLC 170,833 170,833 $2,733 — — 6 6 DEERFIELD MANAGEMENT COMPANY, L.P. 166,666 166,666 $2,667 — — 7 7 PERCEPTIVE ADVISORS LLC 166,666 166,666 $2,667 — — 8 8 SymBiosis Capital Partners, LLC 150,000 150,000 $2,400 — — 9 9 ArrowMark Colorado Holdings LLC 108,333 108,333 $1,733 — — 10 10 REGENTS OF THE UNIVERSITY OF CALIFORNIA 83,333 83,333 $1,342 — TRIM -50% 11 11 Boxer Capital Management, LLC 66,666 66,666 $1,067 — — 12 12 PRICE T ROWE ASSOCIATES INC /MD/ 41,666 41,666 $1,000 — NEW 13 13 Trustees of Columbia University in the City of New York 33,333 33,333 $533 — — 14 14 WOLVERINE ASSET MANAGEMENT LLC 3,085 3,085 $49 — ADD 56% 15 15 UBS Group AG 2,701 2,701 $43 — ADD 69% 16 16 Clear Street Group Inc. 100 100 $2 — — 17 17 Virtu Financial LLC 11,071 11,071 $0 — ADD 5%
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 trends· top 15 holders · shares held over 6 quarters green added · red trimmed6 12 24 Max
Holder 2024-Q4 2025-Q1 2025-Q2 2025-Q3 2025-Q4 2026-Q1 Latest value EcoR1 Capital, LLC 67K 67K 67K 67K 4K 4K $129,454 BAKER BROS. ADVISORS LP 833K 833K 833K 833K 833K 833K $13,333 LMR Partners LLP 648K 648K 648K 648K 648K 648K $10,373 BRIDGER MANAGEMENT, LLC 467K 467K 442K 442K 442K 442K $7,073 Euclidean Capital LLC 171K 171K 171K 171K 171K 171K $2,733 DEERFIELD MANAGEMENT COMPANY, L.P. 167K 167K 167K 167K 167K 167K $2,667 PERCEPTIVE ADVISORS LLC 167K 167K 167K 167K 167K 167K $2,667 SymBiosis Capital Partners, LLC — — — — 150K 150K $2,400 ArrowMark Colorado Holdings LLC — 108K 108K 108K 108K 108K $1,733 REGENTS OF THE UNIVERSITY OF CALIFORNIA — 83K 167K 167K 167K 83K $1,342 Boxer Capital Management, LLC 67K 67K 67K 67K 67K 67K $1,067 PRICE T ROWE ASSOCIATES INC /MD/ 42K 42K 42K 42K — 42K $1,000 Trustees of Columbia University in the City of New York 33K 33K 33K 33K 33K 33K $533 WOLVERINE ASSET MANAGEMENT LLC — — — — 2K 3K $49 UBS Group AG — 3K 1K 1K 2K 3K $43
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.
Institutional footprint by quarter reporting 13F holders 21 15 2021-Q3 2026-Q1 2021-Q3 · 18 holders · % suppressed/unavailable 2021-Q4 · 17 holders · % suppressed/unavailable 2022-Q1 · 18 holders · % suppressed/unavailable 2022-Q2 · 21 holders · % suppressed/unavailable 2022-Q3 · 18 holders · % suppressed/unavailable 2022-Q4 · 16 holders · % suppressed/unavailable 2023-Q1 · 16 holders · % suppressed/unavailable 2023-Q2 · 16 holders · % suppressed/unavailable 2023-Q3 · 19 holders · % suppressed/unavailable 2023-Q4 · 19 holders · % suppressed/unavailable 2024-Q1 · 17 holders · % suppressed/unavailable 2024-Q2 · 19 holders · % suppressed/unavailable 2024-Q3 · 18 holders · % suppressed/unavailable 2024-Q4 · 17 holders · % suppressed/unavailable 2025-Q1 · 18 holders · % suppressed/unavailable 2025-Q2 · 19 holders · % suppressed/unavailable 2025-Q3 · 15 holders · % suppressed/unavailable 2025-Q4 · 16 holders · % suppressed/unavailable 2026-Q1 · 17 holders · % suppressed/unavailable 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 17 2,932,567 — $176,469 2025-Q4 16 2,971,512 — $159,566 2025-Q3 15 3,033,270 — $912,092 2025-Q2 19 3,134,474 — $651,405 2025-Q1 18 3,071,454 — $867,250 2024-Q4 17 2,888,873 — $1M 2024-Q3 18 2,650,230 — $2M 2024-Q2 19 3,450,541 — $785,870 2024-Q1 17 3,338,121 — $1M 2023-Q4 19 3,398,743 — $691,222 2023-Q3 19 3,377,870 — $168,023 2023-Q2 16 3,212,073 — $210,389 2023-Q1 16 3,224,939
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.
