Arrowstreet Capital, Limited Partnership
· Added
Change
+421K
Date
Q1 2026
AC
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Arrowstreet Capital, Limited Partnership
· Added
Change
+421K
Date
Q1 2026
|
Arrowstreet Capital, Limited Partnership | Added· Q1 2026 | – | +421K | – | Q1 2026 | |||||
|
American Century Companies Inc
· Added
Change
+301K
Date
Q1 2026
|
American Century Companies Inc | Added· Q1 2026 | – | +301K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Reduced
Change
−292K
Date
Q1 2026
|
Goldman Sachs Group Inc | Reduced· Q1 2026 | – | −292K | – | Q1 2026 | |||||
|
O'Connor Alternative Investments LLC
· New
Change
+247K
Date
Q1 2026
|
O'Connor Alternative Investments LLC | New· Q1 2026 | – | +247K | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
Change
−228K
Δ Own
−66.4%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | – | −228K | −66.4% | Q1 2026 | |||||
|
Greenvale Capital LLP
· Reduced
Change
−200K
Date
Q1 2026
|
Greenvale Capital LLP | Reduced· Q1 2026 | – | −200K | – | Q1 2026 | |||||
|
Algert Global LLC
· Added
Change
+194K
Date
Q1 2026
|
Algert Global LLC | Added· Q1 2026 | – | +194K | – | Q1 2026 | |||||
|
BlackRock
· Reduced
Change
−167K
Date
Q1 2026
|
BlackRock | Reduced· Q1 2026 | – | −167K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
Change
+166K
Δ Own
+974.8%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +166K | +974.8% | Q1 2026 | |||||
|
UBS Group AG
· Reduced
Change
−161K
Date
Q1 2026
|
UBS Group AG | Reduced· Q1 2026 | – | −161K | – | Q1 2026 | |||||
|
1060 Capital, LLC
· Reduced
Change
−160K
Date
Q1 2026
|
1060 Capital, LLC | Reduced· Q1 2026 | – | −160K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Reduced
Change
−156K
Date
Q1 2026
|
Millennium Management LLC | Reduced· Q1 2026 | – | −156K | – | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Added
Change
+141K
Δ Own
+104.9%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Added· Q1 2026 | – | +141K | +104.9% | Q1 2026 | |||||
|
Balyasny Asset Management L.P.
· Added
Change
+132K
Date
Q1 2026
|
Balyasny Asset Management L.P. | Added· Q1 2026 | – | +132K | – | Q1 2026 | |||||
|
Y-Intercept (hong Kong) Ltd
· Added
Change
+100K
Date
Q1 2026
|
Y-Intercept (hong Kong) Ltd | Added· Q1 2026 | – | +100K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Harmer Derek
· Officer
2 operations
0
|
Harmer Derek | Officer | 2 operations | – | 0 | – | 0 | – | Jul 15, 2026 | Jul 21, 2026 | |||||||||
|
Harmer Derek
· Officer
Tax withholding or exercise payment (F)
-$48K
|
Harmer Derek | Officer | Tax withholding or exercise payment (F) | $12.31 | -4K | -$48K | 197K | −1.9% | Jul 15, 2026 | Jul 21, 2026 | |||||||||
|
Summerer Brett Andrew
· Officer
2 operations
11K
|
Summerer Brett Andrew | Officer | 2 operations | – | 11K | – | 7K | – | Jul 11, 2026 | Jul 14, 2026 | |||||||||
|
Phelan Mark T.
· Officer
Grant (A)
41K
|
Phelan Mark T. | Officer | Grant (A) | – | 41K | – | 41K | – | Jul 11, 2026 | Jul 14, 2026 | |||||||||
|
Levin Scott D.
· Officer
2 operations
41K
|
Levin Scott D. | Officer | 2 operations | – | 41K | – | 16K | – | Jul 11, 2026 | Jul 14, 2026 | |||||||||
|
Kozlik Christen
· Officer
2 operations
0
|
Kozlik Christen | Officer | 2 operations | $13.13 | 0 | – | 6K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Kozlik Christen
· Officer
Tax withholding or exercise payment (F)
-$7K
|
Kozlik Christen | Officer | Tax withholding or exercise payment (F) | $13.13 | -550 | -$7K | 18K | – | Jun 15, 2026 | Jun 17, 2026 | |||||||||
|
Harmer Derek
· Officer
Sell
−$260K
|
Harmer Derek | Officer | Sell | $13.00 | −20K | −$260K | 188K | – | Jun 15, 2026 | Jun 15, 2026 | |||||||||
|
Phelan Mark T.
· Officer
Sell
−$325K
|
Phelan Mark T. | Officer | Sell | $13.00 | −25K | −$325K | 241K | – | Jun 15, 2026 | Jun 15, 2026 | |||||||||
|
Rubenstein Andrew H.
· Director
Gift (G)
-2K
|
Rubenstein Andrew H. | Director | Gift (G) | – | -2K | – | 3.9M | – | Jun 10, 2026 | Jun 12, 2026 | |||||||||
|
Kozlik Christen
· Officer
Grant (A)
17K
|
Kozlik Christen | Officer | Grant (A) | – | 17K | – | 17K | – | Jun 5, 2026 | Jun 9, 2026 | |||||||||
|
Rubenstein Andrew H.
· Director
Grant (A)
79K
|
Rubenstein Andrew H. | Director | Grant (A) | – | 79K | – | 79K | – | Jun 5, 2026 | Jun 9, 2026 | |||||||||
|
Harmer Derek
· Officer
Grant (A)
42K
|
Harmer Derek | Officer | Grant (A) | – | 42K | – | 42K | – | Jun 5, 2026 | Jun 9, 2026 | |||||||||
|
Rubenstein Andrew H.
· Director
Gift (G)
-2K
|
Rubenstein Andrew H. | Director | Gift (G) | – | -2K | – | 3.9M | – | Jun 4, 2026 | Jun 9, 2026 | |||||||||
|
Rubenstein Andrew H.
· Director
Sell
−$302K
|
Rubenstein Andrew H. | Director | Sell | $12.09 | −25K | −$302K | 3.9M | – | Jun 1, 2026 | Jun 2, 2026 | |||||||||
N
A
M
M
G
A
149 reporting institutions disclosed ACEL 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.