D. E. Shaw & Co., Inc.
· Reduced
Change
−684K
Δ Own
−90.6%
Date
Q1 2026
OM
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
D. E. Shaw & Co., Inc.
· Reduced
Change
−684K
Δ Own
−90.6%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | – | −684K | −90.6% | Q1 2026 | |||||
|
Nomura Holdings Inc
· Reduced
Change
−617K
Date
Q1 2026
|
Nomura Holdings Inc | Reduced· Q1 2026 | – | −617K | – | Q1 2026 | |||||
|
Royal Bank of Canada
· Reduced
Change
−498K
Date
Q1 2026
|
Royal Bank of Canada | Reduced· Q1 2026 | – | −498K | – | Q1 2026 | |||||
|
State Street
· Added
Change
+346K
Date
Q1 2026
|
State Street | Added· Q1 2026 | – | +346K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Reduced
Change
−318K
Date
Q1 2026
|
Jane Street Group, LLC | Reduced· Q1 2026 | – | −318K | – | Q1 2026 | |||||
|
Susquehanna International Group, LLP
· Reduced
Change
−257K
Date
Q1 2026
|
Susquehanna International Group, LLP | Reduced· Q1 2026 | – | −257K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+247K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +247K | – | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Reduced
Change
−238K
Δ Own
−45.4%
Date
Q1 2026
|
Two Sigma Investments, LP | Reduced· Q1 2026 | – | −238K | −45.4% | Q1 2026 | |||||
|
Vanguard
· Added
Change
+222K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +222K | – | Q1 2026 | |||||
|
Informed Momentum Co LLC
· Exited
Change
−207K
Δ Own
−100.0%
Date
Q1 2026
|
Informed Momentum Co LLC | Exited· Q1 2026 | – | −207K | −100.0% | Q1 2026 | |||||
|
Prosight Management, LP
· New
Change
+175K
Date
Q1 2026
|
Prosight Management, LP | New· Q1 2026 | – | +175K | – | Q1 2026 | |||||
|
Clutterbuck Capital Management LLC
· Added
Change
+150K
Date
Q1 2026
|
Clutterbuck Capital Management LLC | Added· Q1 2026 | – | +150K | – | Q1 2026 | |||||
|
Polar Asset Management Partners Inc.
· Added
Change
+131K
Date
Q1 2026
|
Polar Asset Management Partners Inc. | Added· Q1 2026 | – | +131K | – | Q1 2026 | |||||
|
Geode
· Added
Change
+121K
Date
Q1 2026
|
Geode | Added· Q1 2026 | – | +121K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+118K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +118K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Demopulos Gregory A. Md
· Director
Grant (A)
1.0M
|
Demopulos Gregory A. Md | Director | Grant (A) | – | 1.0M | – | 1.0M | – | Jul 22, 2026 | Jul 24, 2026 | |||||||||
|
Cancelmo Peter B.
· Officer
Grant (A)
105K
|
Cancelmo Peter B. | Officer | Grant (A) | – | 105K | – | 105K | – | Jul 22, 2026 | Jul 24, 2026 | |||||||||
|
Borges David J.
· Officer
Grant (A)
105K
|
Borges David J. | Officer | Grant (A) | – | 105K | – | 105K | – | Jul 22, 2026 | Jul 24, 2026 | |||||||||
|
Shah Rajiv
· Director
Grant (A)
15K
|
Shah Rajiv | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Perkinson Diana T.
· Director
Grant (A)
15K
|
Perkinson Diana T. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Hood Leroy E. Md Phd
· Director
Grant (A)
15K
|
Hood Leroy E. Md Phd | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Hanish Arnold C.
· Director
Grant (A)
15K
|
Hanish Arnold C. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Demopulos Peter A. Md
· Director
Grant (A)
15K
|
Demopulos Peter A. Md | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Cable Thomas J.
· Director
Grant (A)
15K
|
Cable Thomas J. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Bumol Thomas F.
· Director
Grant (A)
15K
|
Bumol Thomas F. | Director | Grant (A) | – | 15K | – | 15K | – | Jun 18, 2026 | Jun 22, 2026 | |||||||||
|
Cable Thomas J.
· Director
Sell
−$87K
|
Cable Thomas J. | Director | Sell | $11.61 | −8K | −$87K | 35K | – | May 22, 2026 | May 27, 2026 | |||||||||
|
Cable Thomas J.
· Director
2 operations
0
|
Cable Thomas J. | Director | 2 operations | $10.84 | 0 | – | 0 | – | May 22, 2026 | May 27, 2026 | |||||||||
|
Demopulos Gregory A. Md
· Director, Officer
2 operations
0
|
Demopulos Gregory A. Md | Director, Officer | 2 operations | $10.27 | 0 | – | 0 | – | Feb 18, 2026 | Feb 20, 2026 | |||||||||
|
Demopulos Gregory A. Md
· Director, Officer
Tax withholding or exercise payment (F)
-$4.3M
|
Demopulos Gregory A. Md | Director, Officer | Tax withholding or exercise payment (F) | $11.93 | -358K | -$4.3M | 1.5M | – | Feb 18, 2026 | Feb 20, 2026 | |||||||||
|
Borges David J.
· Officer
Sell
−$369K
|
Borges David J. | Officer | Sell | $12.31 | −30K | −$369K | 0 | – | Jan 13, 2026 | Jan 14, 2026 | |||||||||
N
A
M
G
A
A
155 reporting institutions disclosed OMER 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.