Two Sigma Investments, LP
· Added
Change
+2.1M
Δ Own
+210.8%
Date
Q1 2026
NB
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Two Sigma Investments, LP
· Added
Change
+2.1M
Δ Own
+210.8%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | – | +2.1M | +210.8% | Q1 2026 | |||||
|
T. Rowe Price Associates
· Reduced
Change
−1.7M
Date
Q1 2026
|
T. Rowe Price Associates | Reduced· Q1 2026 | – | −1.7M | – | Q1 2026 | |||||
|
Bellevue Group AG
· Reduced
Change
−1.7M
Date
Q1 2026
|
Bellevue Group AG | Reduced· Q1 2026 | – | −1.7M | – | Q1 2026 | |||||
|
AQR Capital Management LLC
· Added
Change
+1.7M
Date
Q1 2026
|
AQR Capital Management LLC | Added· Q1 2026 | – | +1.7M | – | Q1 2026 | |||||
|
Vestal Point Capital, LP
· New
Change
+1.2M
Date
Q1 2026
|
Vestal Point Capital, LP | New· Q1 2026 | – | +1.2M | – | Q1 2026 | |||||
|
Norges
· Exited
Change
−1.1M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | – | −1.1M | −100.0% | Q1 2026 | |||||
|
Los Angeles Capital Management LLC
· Reduced
Change
−1.1M
Date
Q1 2026
|
Los Angeles Capital Management LLC | Reduced· Q1 2026 | – | −1.1M | – | Q1 2026 | |||||
|
Two Sigma Advisers, LP
· Exited
Change
−843K
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | – | −843K | −100.0% | Q1 2026 | |||||
|
Millennium Management LLC
· Added
Change
+805K
Date
Q1 2026
|
Millennium Management LLC | Added· Q1 2026 | – | +805K | – | Q1 2026 | |||||
|
Victory Capital Management Inc
· Added
Change
+607K
Date
Q1 2026
|
Victory Capital Management Inc | Added· Q1 2026 | – | +607K | – | Q1 2026 | |||||
|
Deerfield Management Company, L.P.
· Reduced
Change
−574K
Date
Q1 2026
|
Deerfield Management Company, L.P. | Reduced· Q1 2026 | – | −574K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+555K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +555K | – | Q1 2026 | |||||
|
Jacobs Levy Equity Management, Inc
· Added
Change
+485K
Date
Q1 2026
|
Jacobs Levy Equity Management, Inc | Added· Q1 2026 | – | +485K | – | Q1 2026 | |||||
|
First Trust Advisors LP
· Added
Change
+472K
Date
Q1 2026
|
First Trust Advisors LP | Added· Q1 2026 | – | +472K | – | Q1 2026 | |||||
|
Zurich Insurance Group Ltd
· Exited
Change
−459K
Δ Own
−100.0%
Date
Q1 2026
|
Zurich Insurance Group Ltd | Exited· Q1 2026 | – | −459K | −100.0% | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Delaet Ingrid
· Officer
Sell
−$791K
|
Delaet Ingrid | Officer | Sell | $181.02 | −4K | −$791K | 16K | −21.2% | Jul 10, 2026 | Jul 13, 2026 | |||||||||
|
Delaet Ingrid
· Officer
2 operations
0
|
Delaet Ingrid | Officer | 2 operations | $106.02 | 0 | – | 0 | – | Jul 10, 2026 | Jul 13, 2026 | |||||||||
|
Lippoldt Darin
· Officer
Sell
−$1.8M
|
Lippoldt Darin | Officer | Sell | $179.60 | −10K | −$1.8M | 55K | −15.4% | Jul 9, 2026 | Jul 13, 2026 | |||||||||
|
Lippoldt Darin
· Officer
2 operations
0
|
Lippoldt Darin | Officer | 2 operations | $81.49 | 0 | – | 5K | – | Jul 9, 2026 | Jul 13, 2026 | |||||||||
|
Delaet Ingrid
· Officer
Sell
−$1.5M
|
Delaet Ingrid | Officer | Sell | $178.72 | −8K | −$1.5M | 16K | −34.2% | Jul 9, 2026 | Jul 9, 2026 | |||||||||
|
Delaet Ingrid
· Officer
2 operations
0
|
Delaet Ingrid | Officer | 2 operations | $103.52 | 0 | – | 7K | – | Jul 9, 2026 | Jul 9, 2026 | |||||||||
|
Delaet Ingrid
· Officer
Sell
−$489K
|
Delaet Ingrid | Officer | Sell | $178.54 | −3K | −$489K | 16K | −14.4% | Jul 8, 2026 | Jul 9, 2026 | |||||||||
|
Delaet Ingrid
· Officer
2 operations
0
|
Delaet Ingrid | Officer | 2 operations | $103.52 | 0 | – | 16K | – | Jul 8, 2026 | Jul 9, 2026 | |||||||||
|
Delaet Ingrid
· Officer
Sell
−$607K
|
Delaet Ingrid | Officer | Sell | $178.57 | −3K | −$607K | 16K | −17.3% | Jul 7, 2026 | Jul 9, 2026 | |||||||||
|
Delaet Ingrid
· Officer
2 operations
0
|
Delaet Ingrid | Officer | 2 operations | $103.52 | 0 | – | 19K | – | Jul 7, 2026 | Jul 9, 2026 | |||||||||
|
Lippoldt Darin
· Officer
2 operations
−$1.7M
|
Lippoldt Darin | Officer | 2 operations | $170.03–$170.81 | −10K | −$1.7M | 55K | – | Jun 29, 2026 | Jun 30, 2026 | |||||||||
|
Lippoldt Darin
· Officer
4 operations
0
|
Lippoldt Darin | Officer | 4 operations | $81.49 | 0 | – | 15K | – | Jun 29, 2026 | Jun 30, 2026 | |||||||||
|
Lippoldt Darin
· Officer
Sell
−$34K
|
Lippoldt Darin | Officer | Sell | $169.56 | −200 | −$34K | 55K | −0.4% | Jun 26, 2026 | Jun 30, 2026 | |||||||||
|
Lippoldt Darin
· Officer
2 operations
0
|
Lippoldt Darin | Officer | 2 operations | $81.49 | 0 | – | 25K | – | Jun 26, 2026 | Jun 30, 2026 | |||||||||
|
Sherwin Stephen A.
· Director
5 operations
−$4.1M
|
Sherwin Stephen A. | Director | 5 operations | $163.81–$167.31 | −25K | −$4.1M | 16K | – | Jun 5, 2026 | Jun 9, 2026 | |||||||||
N
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700 reporting institutions disclosed NBIX 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.