Citadel Advisors LLC
· Added
Change
+1.0M
Δ Own
+229.7%
Date
Q1 2026
SU
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Citadel Advisors LLC
· Added
Change
+1.0M
Δ Own
+229.7%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | – | +1.0M | +229.7% | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Reduced
Change
−946K
Δ Own
−41.8%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Reduced· Q1 2026 | – | −946K | −41.8% | Q1 2026 | |||||
|
Armistice Capital, LLC
· Reduced
Change
−869K
Date
Q1 2026
|
Armistice Capital, LLC | Reduced· Q1 2026 | – | −869K | – | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+676K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +676K | – | Q1 2026 | |||||
|
Assenagon Asset Management S.A.
· New
Change
+531K
Date
Q1 2026
|
Assenagon Asset Management S.A. | New· Q1 2026 | – | +531K | – | Q1 2026 | |||||
|
Woodline Partners LP
· New
Change
+449K
Date
Q1 2026
|
Woodline Partners LP | New· Q1 2026 | – | +449K | – | Q1 2026 | |||||
|
Freestone Grove Partners LP
· Added
Change
+445K
Date
Q1 2026
|
Freestone Grove Partners LP | Added· Q1 2026 | – | +445K | – | Q1 2026 | |||||
|
Dimensional
· Reduced
Change
−405K
Date
Q1 2026
|
Dimensional | Reduced· Q1 2026 | – | −405K | – | Q1 2026 | |||||
|
Sofinnova Investments, Inc.
· Added
Change
+401K
Date
Q1 2026
|
Sofinnova Investments, Inc. | Added· Q1 2026 | – | +401K | – | Q1 2026 | |||||
|
SG Americas Securities, LLC
· Added
Change
+364K
Date
Q1 2026
|
SG Americas Securities, LLC | Added· Q1 2026 | – | +364K | – | Q1 2026 | |||||
|
Acadian Asset Management LLC
· Reduced
Change
−289K
Date
Q1 2026
|
Acadian Asset Management LLC | Reduced· Q1 2026 | – | −289K | – | Q1 2026 | |||||
|
Nomura Asset Management International Inc.
· Reduced
Change
−270K
Date
Q1 2026
|
Nomura Asset Management International Inc. | Reduced· Q1 2026 | – | −270K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
Change
+196K
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | – | +196K | – | Q1 2026 | |||||
|
Catalio Capital Management, LP
· Reduced
Change
−195K
Date
Q1 2026
|
Catalio Capital Management, LP | Reduced· Q1 2026 | – | −195K | – | Q1 2026 | |||||
|
Mutual of America Capital Management LLC
· Exited
Change
−194K
Δ Own
−100.0%
Date
Q1 2026
|
Mutual of America Capital Management LLC | Exited· Q1 2026 | – | −194K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Bhatt Padmanabh P.
· Officer
2 operations
−$360K
|
Bhatt Padmanabh P. | Officer | 2 operations | $49.55–$50.48 | −7K | −$360K | 17K | – | Mar 18, 2026 | Mar 18, 2026 | |||||||||
|
Bhatt Padmanabh P.
· Officer
2 operations
0
|
Bhatt Padmanabh P. | Officer | 2 operations | $39.40 | 0 | – | 0 | – | Mar 18, 2026 | Mar 18, 2026 | |||||||||
|
Bhatt Padmanabh P.
· Officer
2 operations
−$2.5M
|
Bhatt Padmanabh P. | Officer | 2 operations | $49.95–$50.73 | −50K | −$2.5M | 17K | – | Mar 17, 2026 | Mar 18, 2026 | |||||||||
|
Bhatt Padmanabh P.
· Officer
6 operations
0
|
Bhatt Padmanabh P. | Officer | 6 operations | $36.75–$39.40 | 0 | – | 5K | – | Mar 17, 2026 | Mar 18, 2026 | |||||||||
|
Bhatt Padmanabh P.
· Officer
2 operations
−$2.5M
|
Bhatt Padmanabh P. | Officer | 2 operations | $50.18–$50.49 | −50K | −$2.5M | 17K | – | Mar 16, 2026 | Mar 18, 2026 | |||||||||
|
Bhatt Padmanabh P.
· Officer
8 operations
0
|
Bhatt Padmanabh P. | Officer | 8 operations | $27.94–$36.75 | 0 | – | 15K | – | Mar 16, 2026 | Mar 18, 2026 | |||||||||
|
Khattar Jack A.
· Director, Officer
3 operations
−$1.8M
|
Khattar Jack A. | Director, Officer | 3 operations | $50.09–$51.75 | −35K | −$1.8M | 969K | – | Mar 13, 2026 | Mar 16, 2026 | |||||||||
|
Khattar Jack A.
· Director, Officer
2 operations
0
|
Khattar Jack A. | Director, Officer | 2 operations | – | 0 | – | 1.2M | – | Mar 13, 2026 | Mar 16, 2026 | |||||||||
|
Hudson Frederick M.
· Director
Sell
−$272K
|
Hudson Frederick M. | Director | Sell | $50.61 | −5K | −$272K | 60K | – | Mar 12, 2026 | Mar 16, 2026 | |||||||||
|
Horich William Todd
· Officer
Sell
−$244K
|
Horich William Todd | Officer | Sell | $55.00 | −4K | −$244K | 0 | – | Mar 10, 2026 | Mar 10, 2026 | |||||||||
|
Mottola Frank
· Officer
Sell
−$87K
|
Mottola Frank | Officer | Sell | $53.65 | −2K | −$87K | 18K | – | Mar 9, 2026 | Mar 10, 2026 | |||||||||
|
Horich William Todd
· Officer
Sell
−$240K
|
Horich William Todd | Officer | Sell | $54.00 | −4K | −$240K | 4K | – | Mar 9, 2026 | Mar 10, 2026 | |||||||||
|
Khattar Jack A.
· Director, Officer
2 operations
0
|
Khattar Jack A. | Director, Officer | 2 operations | – | 0 | – | 0 | – | Mar 6, 2026 | Mar 10, 2026 | |||||||||
|
Khattar Jack A.
· Director, Officer
Tax withholding or exercise payment (F)
-$907K
|
Khattar Jack A. | Director, Officer | Tax withholding or exercise payment (F) | $54.73 | -17K | -$907K | 1.2M | – | Mar 6, 2026 | Mar 10, 2026 | |||||||||
|
Mottola Frank
· Officer
2 operations
0
|
Mottola Frank | Officer | 2 operations | – | 0 | – | 0 | – | Mar 6, 2026 | Mar 10, 2026 | |||||||||
N
A
M
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G
A
304 reporting institutions disclosed SUPN 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.