Madison Avenue Partners, LP
· New
Change
+2.4M
Date
Q1 2026
ST
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Madison Avenue Partners, LP
· New
Change
+2.4M
Date
Q1 2026
|
Madison Avenue Partners, LP | New· Q1 2026 | – | +2.4M | – | Q1 2026 | |||||
|
Anatole Investment Management Ltd
· New
Change
+1.6M
Date
Q1 2026
|
Anatole Investment Management Ltd | New· Q1 2026 | – | +1.6M | – | Q1 2026 | |||||
|
Broadwood Capital Inc
· Added
Change
+1.1M
Date
Q1 2026
|
Broadwood Capital Inc | Added· Q1 2026 | – | +1.1M | – | Q1 2026 | |||||
|
Two Seas Capital LP
· New
Change
+1.0M
Date
Q1 2026
|
Two Seas Capital LP | New· Q1 2026 | – | +1.0M | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+854K
Δ Own
+416.5%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +854K | +416.5% | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· New
Change
+823K
Date
Q1 2026
|
Point72 Asset Management, L.P. | New· Q1 2026 | – | +823K | – | Q1 2026 | |||||
|
Yunqi Capital Ltd
· Added
Change
+750K
Date
Q1 2026
|
Yunqi Capital Ltd | Added· Q1 2026 | – | +750K | – | Q1 2026 | |||||
|
Morgan Stanley
· Added
Change
+570K
Date
Q1 2026
|
Morgan Stanley | Added· Q1 2026 | – | +570K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+446K
Δ Own
+391.5%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +446K | +391.5% | Q1 2026 | |||||
|
Prescott Group Capital Management, L.L.C.
· New
Change
+360K
Date
Q1 2026
|
Prescott Group Capital Management, L.L.C. | New· Q1 2026 | – | +360K | – | Q1 2026 | |||||
|
Squarepoint Ops LLC
· New
Change
+347K
Date
Q1 2026
|
Squarepoint Ops LLC | New· Q1 2026 | – | +347K | – | Q1 2026 | |||||
|
Bright Valley Capital Ltd
· New
Change
+272K
Date
Q1 2026
|
Bright Valley Capital Ltd | New· Q1 2026 | – | +272K | – | Q1 2026 | |||||
|
Ai-Squared Management Ltd
· New
Change
+268K
Date
Q1 2026
|
Ai-Squared Management Ltd | New· Q1 2026 | – | +268K | – | Q1 2026 | |||||
|
Dimensional
· Added
Change
+231K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +231K | – | Q1 2026 | |||||
|
Hrt Financial LP
· New
Change
+220K
Date
Q1 2026
|
Hrt Financial LP | New· Q1 2026 | – | +220K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wang Christopher Min Fang
· Director
Grant (A)
11K
|
Wang Christopher Min Fang | Director | Grant (A) | – | 11K | – | 11K | – | Jun 18, 2026 | Jun 23, 2026 | |||||||||
|
Lebuhn Richard T.
· Director
Grant (A)
11K
|
Lebuhn Richard T. | Director | Grant (A) | – | 11K | – | 11K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Bradsher Neal C.
· Director
Grant (A)
11K
|
Bradsher Neal C. | Director | Grant (A) | – | 11K | – | 11K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Butcher Arthur C.
· Director
2 operations
0
|
Butcher Arthur C. | Director | 2 operations | – | 0 | – | 0 | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Butcher Arthur C.
· Director
2 operations
8K
|
Butcher Arthur C. | Director | 2 operations | – | 8K | – | 4K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Zhou Lilian Yansheng
· Director
2 operations
9K
|
Zhou Lilian Yansheng | Director | 2 operations | – | 9K | – | 6K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Silverman Lou
· Director
2 operations
0
|
Silverman Lou | Director | 2 operations | – | 0 | – | 0 | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Silverman Lou
· Director
Grant (A)
6K
|
Silverman Lou | Director | Grant (A) | – | 6K | – | 6K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Jiang Wei
· Director
2 operations
0
|
Jiang Wei | Director | 2 operations | – | 0 | – | 0 | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Jiang Wei
· Director
Grant (A)
6K
|
Jiang Wei | Director | Grant (A) | – | 6K | – | 6K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Zhou Lilian Yansheng
· Director
Grant (A)
$100K
|
Zhou Lilian Yansheng | Director | Grant (A) | $28.29 | 4K | $100K | 8K | – | Jun 12, 2026 | Jun 15, 2026 | |||||||||
|
Andrews Deborah J.
· Officer
2 operations
16K
|
Andrews Deborah J. | Officer | 2 operations | – | 16K | – | 16K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Andrews Deborah J.
· Officer
2 operations
-$181K
|
Andrews Deborah J. | Officer | 2 operations | $32.07 | -6K | -$181K | 19K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Andrews Deborah J.
· Officer
2 operations
16K
|
Andrews Deborah J. | Officer | 2 operations | – | 16K | – | 21K | – | May 15, 2026 | May 19, 2026 | |||||||||
|
Foust Warren
· Officer
4 operations
33K
|
Foust Warren | Officer | 4 operations | – | 33K | – | 33K | – | May 15, 2026 | May 19, 2026 | |||||||||
N
A
M
M
G
A
198 reporting institutions disclosed STAA 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.