Deep Track Capital, LP
· New
Change
+9.3M
Date
Q1 2026
AC
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Deep Track Capital, LP
· New
Change
+9.3M
Date
Q1 2026
|
Deep Track Capital, LP | New· Q1 2026 | – | +9.3M | – | Q1 2026 | |||||
|
Ra Capital Management, L.P.
· New
Change
+6.8M
Date
Q1 2026
|
Ra Capital Management, L.P. | New· Q1 2026 | – | +6.8M | – | Q1 2026 | |||||
|
Frazier Life Sciences Management, L.P.
· New
Change
+4.9M
Date
Q1 2026
|
Frazier Life Sciences Management, L.P. | New· Q1 2026 | – | +4.9M | – | Q1 2026 | |||||
|
Balyasny Asset Management L.P.
· New
Change
+3.4M
Date
Q1 2026
|
Balyasny Asset Management L.P. | New· Q1 2026 | – | +3.4M | – | Q1 2026 | |||||
|
Vivo Capital, LLC
· Reduced
Change
−2.2M
Date
Q1 2026
|
Vivo Capital, LLC | Reduced· Q1 2026 | – | −2.2M | – | Q1 2026 | |||||
|
Kalehua Capital Management LLC
· New
Change
+1.8M
Date
Q1 2026
|
Kalehua Capital Management LLC | New· Q1 2026 | – | +1.8M | – | Q1 2026 | |||||
|
Braidwell LP
· New
Change
+1.7M
Date
Q1 2026
|
Braidwell LP | New· Q1 2026 | – | +1.7M | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
Change
−1.2M
Δ Own
−57.0%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | – | −1.2M | −57.0% | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+1.0M
Δ Own
+86.6%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +1.0M | +86.6% | Q1 2026 | |||||
|
Vanguard
· Added
Change
+1.0M
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +1.0M | – | Q1 2026 | |||||
|
Woodline Partners LP
· Added
Change
+744K
Date
Q1 2026
|
Woodline Partners LP | Added· Q1 2026 | – | +744K | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
Change
−669K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | – | −669K | – | Q1 2026 | |||||
|
Renaissance Technologies LLC
· Reduced
Change
−623K
Δ Own
−55.3%
Date
Q1 2026
|
Renaissance Technologies LLC | Reduced· Q1 2026 | – | −623K | −55.3% | Q1 2026 | |||||
|
BlackRock
· Added
Change
+602K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +602K | – | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Reduced
Change
−583K
Date
Q1 2026
|
Acadian Asset Management LLC | Reduced· Q1 2026 | – | −583K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mehra Anand
· Director
2 operations
0
|
Mehra Anand | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Schiff Andrew N.
· Director
2 operations
0
|
Schiff Andrew N. | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Humphries William D.
· Director
2 operations
0
|
Humphries William D. | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Molineaux Christopher P.
· Director
2 operations
0
|
Molineaux Christopher P. | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Milano Vincent
· Director
2 operations
0
|
Milano Vincent | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Gowen Maxine
· Director
2 operations
0
|
Gowen Maxine | Director | 2 operations | – | 0 | – | 0 | – | Jun 5, 2026 | Jun 8, 2026 | |||||||||
|
Mehra Anand
· Director
2 operations
53K
|
Mehra Anand | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Schiff Andrew N.
· Director
2 operations
53K
|
Schiff Andrew N. | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Humphries William D.
· Director
2 operations
53K
|
Humphries William D. | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Molineaux Christopher P.
· Director
2 operations
53K
|
Molineaux Christopher P. | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Milano Vincent
· Director
2 operations
53K
|
Milano Vincent | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
|
Gowen Maxine
· Director
2 operations
53K
|
Gowen Maxine | Director | 2 operations | – | 53K | – | 11K | – | Jun 4, 2026 | Jun 8, 2026 | |||||||||
N
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A
124 reporting institutions disclosed ACRS position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.