Nantahala Capital Management, LLC
· Added
Change
+677K
Date
Q1 2026
JA
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Nantahala Capital Management, LLC
· Added
Change
+677K
Date
Q1 2026
|
Nantahala Capital Management, LLC | Added· Q1 2026 | – | +677K | – | Q1 2026 | |||||
|
Marshall Wace, LLP
· Added
Change
+491K
Date
Q1 2026
|
Marshall Wace, LLP | Added· Q1 2026 | – | +491K | – | Q1 2026 | |||||
|
Invenomic Capital Management LP
· Reduced
Change
−442K
Date
Q1 2026
|
Invenomic Capital Management LP | Reduced· Q1 2026 | – | −442K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Reduced
Change
−403K
Date
Q1 2026
|
Goldman Sachs Group Inc | Reduced· Q1 2026 | – | −403K | – | Q1 2026 | |||||
|
Millennium Management LLC
· New
Change
+288K
Date
Q1 2026
|
Millennium Management LLC | New· Q1 2026 | – | +288K | – | Q1 2026 | |||||
|
Arrowstreet Capital, Limited Partnership
· Exited
Change
−247K
Δ Own
−100.0%
Date
Q1 2026
|
Arrowstreet Capital, Limited Partnership | Exited· Q1 2026 | – | −247K | −100.0% | Q1 2026 | |||||
|
Readystate Asset Management LP
· Exited
Change
−225K
Δ Own
−100.0%
Date
Q1 2026
|
Readystate Asset Management LP | Exited· Q1 2026 | – | −225K | −100.0% | Q1 2026 | |||||
|
Windward Management LP
· Reduced
Change
−208K
Date
Q1 2026
|
Windward Management LP | Reduced· Q1 2026 | – | −208K | – | Q1 2026 | |||||
|
Allianz Asset Management GMBH
· Added
Change
+197K
Date
Q1 2026
|
Allianz Asset Management GMBH | Added· Q1 2026 | – | +197K | – | Q1 2026 | |||||
|
Trexquant Investment LP
· Exited
Change
−191K
Δ Own
−100.0%
Date
Q1 2026
|
Trexquant Investment LP | Exited· Q1 2026 | – | −191K | −100.0% | Q1 2026 | |||||
|
Engineers Gate Manager LP
· New
Change
+190K
Date
Q1 2026
|
Engineers Gate Manager LP | New· Q1 2026 | – | +190K | – | Q1 2026 | |||||
|
UBS Group AG
· Reduced
Change
−189K
Date
Q1 2026
|
UBS Group AG | Reduced· Q1 2026 | – | −189K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Reduced
Change
−173K
Δ Own
−75.1%
Date
Q1 2026
|
Two Sigma Investments, LP | Reduced· Q1 2026 | – | −173K | −75.1% | Q1 2026 | |||||
|
Ruffer LLP
· Exited
Change
−170K
Δ Own
−100.0%
Date
Q1 2026
|
Ruffer LLP | Exited· Q1 2026 | – | −170K | −100.0% | Q1 2026 | |||||
|
Lsv Asset Management
· Reduced
Change
−150K
Date
Q1 2026
|
Lsv Asset Management | Reduced· Q1 2026 | – | −150K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
King Mark James
· Director
Sell
−$83K
|
King Mark James | Director | Sell | $14.70 | −6K | −$83K | 188K | −2.9% | Jul 21, 2026 | Jul 21, 2026 | |||||||||
|
King Mark James
· Director
Sell
−$74K
|
King Mark James | Director | Sell | $12.53 | −6K | −$74K | 193K | – | Jun 18, 2026 | Jun 18, 2026 | |||||||||
|
Myers James M.
· Director
Grant (A)
2K
|
Myers James M. | Director | Grant (A) | – | 2K | – | 49K | – | Jun 1, 2026 | Jun 2, 2026 | |||||||||
|
Diaz Guillermo Jr
· Director
2 operations
+12K
|
Diaz Guillermo Jr | Director | 2 operations | $11.51 | +12K | – | 21K | – | May 28, 2026 | May 28, 2026 | |||||||||
|
King Mark James
· Director
Grant (A)
187K
|
King Mark James | Director | Grant (A) | – | 187K | – | 199K | – | May 12, 2026 | May 14, 2026 | |||||||||
|
Mount Carl
· Officer
Sell
−$14K
|
Mount Carl | Officer | Sell | $12.10 | −1K | −$14K | 41K | – | May 4, 2026 | May 5, 2026 | |||||||||
|
Hooper Dawn E.
· CFO
Sell
−$9K
|
Hooper Dawn E. | CFO | Sell | $12.10 | −738 | −$9K | 36K | – | May 4, 2026 | May 5, 2026 | |||||||||
|
Super Sarah L.
· Officer
Sell
−$22K
|
Super Sarah L. | Officer | Sell | $12.10 | −2K | −$22K | 52K | – | May 4, 2026 | May 5, 2026 | |||||||||
|
Piano Steven
· Officer
Sell
−$11K
|
Piano Steven | Officer | Sell | $12.10 | −922 | −$11K | 40K | – | May 4, 2026 | May 5, 2026 | |||||||||
|
Cook Richard D.
· Officer
Sell
−$12K
|
Cook Richard D. | Officer | Sell | $12.10 | −1K | −$12K | 40K | – | May 4, 2026 | May 5, 2026 | |||||||||
|
Tucker Lance F.
· Director
Tax withholding or exercise payment (F)
-$54K
|
Tucker Lance F. | Director | Tax withholding or exercise payment (F) | $10.96 | -5K | -$54K | 198K | – | Apr 7, 2026 | Apr 8, 2026 | |||||||||
|
Yeung Man Wein Vivien
· Director
Grant (A)
8K
|
Yeung Man Wein Vivien | Director | Grant (A) | – | 8K | – | 26K | – | Mar 3, 2026 | Mar 4, 2026 | |||||||||
|
Ramirez Enrique
· Director
Grant (A)
8K
|
Ramirez Enrique | Director | Grant (A) | – | 8K | – | 13K | – | Mar 3, 2026 | Mar 4, 2026 | |||||||||
|
Myers James M.
· Director
Grant (A)
8K
|
Myers James M. | Director | Grant (A) | – | 8K | – | 45K | – | Mar 3, 2026 | Mar 4, 2026 | |||||||||
|
Murphy Michael W.
· Director
Grant (A)
8K
|
Murphy Michael W. | Director | Grant (A) | – | 8K | – | 86K | – | Mar 3, 2026 | Mar 4, 2026 | |||||||||
N
A
M
G
A
A
156 reporting institutions disclosed JACK 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.