Arrowstreet Capital, Limited Partnership
· Exited
Change
−693K
Δ Own
−100.0%
Date
Q1 2026
OS
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Arrowstreet Capital, Limited Partnership
· Exited
Change
−693K
Δ Own
−100.0%
Date
Q1 2026
|
Arrowstreet Capital, Limited Partnership | Exited· Q1 2026 | – | −693K | −100.0% | Q1 2026 | |||||
|
Lynrock Lake LP
· Reduced
Change
−665K
Date
Q1 2026
|
Lynrock Lake LP | Reduced· Q1 2026 | – | −665K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+460K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +460K | – | Q1 2026 | |||||
|
Pacific Ridge Capital Partners, LLC
· Exited
Change
−432K
Δ Own
−100.0%
Date
Q1 2026
|
Pacific Ridge Capital Partners, LLC | Exited· Q1 2026 | – | −432K | −100.0% | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+400K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +400K | – | Q1 2026 | |||||
|
Morgan Stanley
· Added
Change
+370K
Date
Q1 2026
|
Morgan Stanley | Added· Q1 2026 | – | +370K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+359K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +359K | – | Q1 2026 | |||||
|
Archon Capital Management LLC
· Exited
Change
−327K
Δ Own
−100.0%
Date
Q1 2026
|
Archon Capital Management LLC | Exited· Q1 2026 | – | −327K | −100.0% | Q1 2026 | |||||
|
Bard Associates Inc
· Reduced
Change
−310K
Date
Q1 2026
|
Bard Associates Inc | Reduced· Q1 2026 | – | −310K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
Change
+271K
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | – | +271K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Exited
Change
−253K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Investments, LP | Exited· Q1 2026 | – | −253K | −100.0% | Q1 2026 | |||||
|
BNP Paribas Financial Markets
· Reduced
Change
−226K
Date
Q1 2026
|
BNP Paribas Financial Markets | Reduced· Q1 2026 | – | −226K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
Change
+211K
Δ Own
+144.8%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +211K | +144.8% | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Exited
Change
−186K
Δ Own
−100.0%
Date
Q1 2026
|
Acadian Asset Management LLC | Exited· Q1 2026 | – | −186K | −100.0% | Q1 2026 | |||||
|
Marshall Wace, LLP
· Added
Change
+145K
Date
Q1 2026
|
Marshall Wace, LLP | Added· Q1 2026 | – | +145K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Knowles Michael
· Director
Tax withholding or exercise payment (F)
-$332K
|
Knowles Michael | Director | Tax withholding or exercise payment (F) | $16.89 | -20K | -$332K | 607K | – | Jun 5, 2026 | Jun 12, 2026 | |||||||||
|
Bassett David George
· Director
Sell
−$141K
|
Bassett David George | Director | Sell | $17.64 | −8K | −$141K | 25K | – | May 26, 2026 | May 26, 2026 | |||||||||
|
Matz Gregory W.
· Director
Sell
−$140K
|
Matz Gregory W. | Director | Sell | $17.52 | −8K | −$140K | 79K | – | May 26, 2026 | May 26, 2026 | |||||||||
|
Herbets Mitchell H.
· Director
Sell
−$88K
|
Herbets Mitchell H. | Director | Sell | $17.62 | −5K | −$88K | 49K | – | May 26, 2026 | May 26, 2026 | |||||||||
|
Bassett David George
· Director
Grant (A)
12K
|
Bassett David George | Director | Grant (A) | – | 12K | – | 33K | – | May 20, 2026 | May 26, 2026 | |||||||||
|
Matz Gregory W.
· Director
Grant (A)
12K
|
Matz Gregory W. | Director | Grant (A) | – | 12K | – | 87K | – | May 20, 2026 | May 26, 2026 | |||||||||
|
Dumont Michael J.
· Director
Grant (A)
12K
|
Dumont Michael J. | Director | Grant (A) | – | 12K | – | 120K | – | May 20, 2026 | May 26, 2026 | |||||||||
|
Herbets Mitchell H.
· Director
Grant (A)
12K
|
Herbets Mitchell H. | Director | Grant (A) | – | 12K | – | 54K | – | May 20, 2026 | May 26, 2026 | |||||||||
|
Gabel Daniel G.
· CFO
Tax withholding or exercise payment (F)
-$25K
|
Gabel Daniel G. | CFO | Tax withholding or exercise payment (F) | $15.68 | -2K | -$25K | 154K | – | May 11, 2026 | May 28, 2026 | |||||||||
|
Ison James
· Officer
2 operations
0
|
Ison James | Officer | 2 operations | – | 0 | – | 231K | – | Feb 15, 2026 | Mar 2, 2026 | |||||||||
|
Ison James
· Officer
Tax withholding or exercise payment (F)
-$27K
|
Ison James | Officer | Tax withholding or exercise payment (F) | $8.70 | -3K | -$27K | 146K | – | Feb 15, 2026 | Mar 2, 2026 | |||||||||
|
Knowles Michael
· Director, Officer
Tax withholding or exercise payment (F)
-$58K
|
Knowles Michael | Director, Officer | Tax withholding or exercise payment (F) | $8.70 | -7K | -$58K | 648K | – | Feb 15, 2026 | Mar 2, 2026 | |||||||||
|
Ison James
· Officer
2 operations
0
|
Ison James | Officer | 2 operations | – | 0 | – | 141K | – | Feb 7, 2026 | Mar 2, 2026 | |||||||||
|
Ison James
· Officer
Tax withholding or exercise payment (F)
-$60K
|
Ison James | Officer | Tax withholding or exercise payment (F) | $9.24 | -7K | -$60K | 149K | – | Feb 7, 2026 | Mar 2, 2026 | |||||||||
|
Ison James
· Officer
Grant (A)
34K
|
Ison James | Officer | Grant (A) | – | 34K | – | 156K | – | Feb 7, 2026 | Mar 2, 2026 | |||||||||
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86 reporting institutions disclosed OSS 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.