Ack Asset Management LLC
· New
Change
+584K
Date
Q1 2026
CT
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Ack Asset Management LLC
· New
Change
+584K
Date
Q1 2026
|
Ack Asset Management LLC | New· Q1 2026 | – | +584K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+107K
Δ Own
+127.7%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +107K | +127.7% | Q1 2026 | |||||
|
Janus Henderson Group PLC
· Added
Change
+104K
Date
Q1 2026
|
Janus Henderson Group PLC | Added· Q1 2026 | – | +104K | – | Q1 2026 | |||||
|
Intech Investment Management LLC
· Added
Change
+81K
Date
Q1 2026
|
Intech Investment Management LLC | Added· Q1 2026 | – | +81K | – | Q1 2026 | |||||
|
Renaissance Technologies LLC
· Added
Change
+76K
Δ Own
+24.2%
Date
Q1 2026
|
Renaissance Technologies LLC | Added· Q1 2026 | – | +76K | +24.2% | Q1 2026 | |||||
|
Harvey Partners, LLC
· Added
Change
+50K
Date
Q1 2026
|
Harvey Partners, LLC | Added· Q1 2026 | – | +50K | – | Q1 2026 | |||||
|
Tudor Investment Corp Et Al
· New
Change
+48K
Date
Q1 2026
|
Tudor Investment Corp Et Al | New· Q1 2026 | – | +48K | – | Q1 2026 | |||||
|
Exoduspoint Capital Management, LP
· New
Change
+41K
Date
Q1 2026
|
Exoduspoint Capital Management, LP | New· Q1 2026 | – | +41K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
Change
+39K
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | – | +39K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
Change
+37K
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | – | +37K | – | Q1 2026 | |||||
|
Inspire Investing, LLC
· New
Change
+35K
Date
Q1 2026
|
Inspire Investing, LLC | New· Q1 2026 | – | +35K | – | Q1 2026 | |||||
|
Seizert Capital Partners, LLC
· Added
Change
+30K
Date
Q1 2026
|
Seizert Capital Partners, LLC | Added· Q1 2026 | – | +30K | – | Q1 2026 | |||||
|
Trexquant Investment LP
· New
Change
+28K
Date
Q1 2026
|
Trexquant Investment LP | New· Q1 2026 | – | +28K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+27K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +27K | – | Q1 2026 | |||||
|
Teacher Retirement System of Texas
· Added
Change
+26K
Date
Q1 2026
|
Teacher Retirement System of Texas | Added· Q1 2026 | – | +26K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Trivedi Pratik
· Director
Grant (A)
$860K
|
Trivedi Pratik | Director | Grant (A) | $60.34 | 14K | $860K | 24K | +151.9% | Jul 6, 2026 | Jul 7, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director
Sell
−$1.5M
|
O'Sullivan Kieran M. | Director | Sell | $66.67 | −23K | −$1.5M | 308K | – | Jun 3, 2026 | Jun 3, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director
Sell
−$4.0M
|
O'Sullivan Kieran M. | Director | Sell | $66.26 | −60K | −$4.0M | 330K | – | Jun 2, 2026 | Jun 3, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director
Sell
−$3.0M
|
O'Sullivan Kieran M. | Director | Sell | $63.31 | −47K | −$3.0M | 391K | – | Jun 1, 2026 | Jun 3, 2026 | |||||||||
|
Hawkins John M.
· Officer
2 operations
2K
|
Hawkins John M. | Officer | 2 operations | – | 2K | – | 2K | – | Jun 1, 2026 | Jun 3, 2026 | |||||||||
|
Trivedi Pratik
· Officer
2 operations
-$127K
|
Trivedi Pratik | Officer | 2 operations | $61.75 | -2K | -$127K | 9K | – | May 8, 2026 | May 12, 2026 | |||||||||
|
Agrawal Ashish
· Officer
Tax withholding or exercise payment (F)
-$107K
|
Agrawal Ashish | Officer | Tax withholding or exercise payment (F) | $52.94 | -2K | -$107K | 109K | – | Feb 24, 2026 | Feb 26, 2026 | |||||||||
|
Agrawal Ashish
· Officer
Grant (A)
$228K
|
Agrawal Ashish | Officer | Grant (A) | $52.94 | 4K | $228K | 111K | – | Feb 24, 2026 | Feb 26, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director, Officer
Tax withholding or exercise payment (F)
-$398K
|
O'Sullivan Kieran M. | Director, Officer | Tax withholding or exercise payment (F) | $52.94 | -8K | -$398K | 438K | – | Feb 24, 2026 | Feb 26, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director, Officer
Grant (A)
$893K
|
O'Sullivan Kieran M. | Director, Officer | Grant (A) | $52.94 | 17K | $893K | 445K | – | Feb 24, 2026 | Feb 26, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director, Officer
Grant (A)
$1.4M
|
O'Sullivan Kieran M. | Director, Officer | Grant (A) | $56.92 | 25K | $1.4M | 428K | – | Feb 12, 2026 | Feb 13, 2026 | |||||||||
|
Pacioni Mark R.
· Officer
Grant (A)
$211K
|
Pacioni Mark R. | Officer | Grant (A) | $57.15 | 4K | $211K | 8K | – | Feb 11, 2026 | Feb 13, 2026 | |||||||||
|
Trivedi Pratik
· Officer
Grant (A)
$200K
|
Trivedi Pratik | Officer | Grant (A) | $57.15 | 4K | $200K | 11K | – | Feb 11, 2026 | Feb 13, 2026 | |||||||||
|
Agrawal Ashish
· Officer
Grant (A)
$343K
|
Agrawal Ashish | Officer | Grant (A) | $57.15 | 6K | $343K | 107K | – | Feb 11, 2026 | Feb 13, 2026 | |||||||||
|
O'Sullivan Kieran M.
· Director, Officer
2 operations
-$388K
|
O'Sullivan Kieran M. | Director, Officer | 2 operations | $55.58 | -7K | -$388K | 404K | – | Feb 9, 2026 | Feb 11, 2026 | |||||||||
N
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230 reporting institutions disclosed CTS 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.