Two Sigma Advisers, LP
· Exited
−$68M
Change
−2.1M
Δ Own
−100.0%
Date
Q1 2026
VK
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Two Sigma Advisers, LP
· Exited
−$68M
Change
−2.1M
Δ Own
−100.0%
Date
Q1 2026
|
Two Sigma Advisers, LP | Exited· Q1 2026 | −$68M | −2.1M | −100.0% | Q1 2026 | |||||
|
Two Sigma Investments, LP
· Added
+$64M
Change
+2.0M
Δ Own
+82.0%
Date
Q1 2026
|
Two Sigma Investments, LP | Added· Q1 2026 | +$64M | +2.0M | +82.0% | Q1 2026 | |||||
|
American Century Companies Inc
· Added
+$57M
Change
+1.8M
Date
Q1 2026
|
American Century Companies Inc | Added· Q1 2026 | +$57M | +1.8M | – | Q1 2026 | |||||
|
Raymond James Financial Inc
· Added
+$37M
Change
+1.2M
Date
Q1 2026
|
Raymond James Financial Inc | Added· Q1 2026 | +$37M | +1.2M | – | Q1 2026 | |||||
|
Vestal Point Capital, LP
· New
+$29M
Change
+914K
Date
Q1 2026
|
Vestal Point Capital, LP | New· Q1 2026 | +$29M | +914K | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Reduced
−$24M
Change
−752K
Date
Q1 2026
|
Jane Street Group, LLC | Reduced· Q1 2026 | −$24M | −752K | – | Q1 2026 | |||||
|
Susquehanna International Group, LLP
· Reduced
−$23M
Change
−718K
Date
Q1 2026
|
Susquehanna International Group, LLP | Reduced· Q1 2026 | −$23M | −718K | – | Q1 2026 | |||||
|
Exoduspoint Capital Management, LP
· Reduced
−$21M
Change
−653K
Date
Q1 2026
|
Exoduspoint Capital Management, LP | Reduced· Q1 2026 | −$21M | −653K | – | Q1 2026 | |||||
|
Artia Global Partners LP
· Reduced
−$17M
Change
−539K
Date
Q1 2026
|
Artia Global Partners LP | Reduced· Q1 2026 | −$17M | −539K | – | Q1 2026 | |||||
|
FMR LLC
· Reduced
−$17M
Change
−533K
Δ Own
−8.1%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | −$17M | −533K | −8.1% | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
−$15M
Change
−470K
Δ Own
−27.1%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | −$15M | −470K | −27.1% | Q1 2026 | |||||
|
BNP Paribas Financial Markets
· Reduced
−$15M
Change
−452K
Date
Q1 2026
|
BNP Paribas Financial Markets | Reduced· Q1 2026 | −$15M | −452K | – | Q1 2026 | |||||
|
Barclays PLC
· Reduced
−$14M
Change
−446K
Date
Q1 2026
|
Barclays PLC | Reduced· Q1 2026 | −$14M | −446K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
+$13M
Change
+413K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | +$13M | +413K | – | Q1 2026 | |||||
|
Vanguard
· Added
+$12M
Change
+372K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | +$12M | +372K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Chen Hubert C.
· Officer
Grant (A)
190K
|
Chen Hubert C. | Officer | Grant (A) | – | 190K | – | 190K | – | Jun 1, 2026 | Jun 3, 2026 | |||||||||
|
Aubuchon Neil William
· Officer
Buy
+$150K
|
Aubuchon Neil William | Officer | Buy | $33.50 | +4K | +$150K | 4K | – | Mar 10, 2026 | Mar 10, 2026 | |||||||||
|
Aubuchon Neil William
· Officer
Grant (A)
180K
|
Aubuchon Neil William | Officer | Grant (A) | – | 180K | – | 180K | – | Jan 12, 2026 | Jan 26, 2026 | |||||||||
|
Zante Greg
· Officer
4 operations
−$1.9M
|
Zante Greg | Officer | 4 operations | $32.09–$34.24 | −58K | −$1.9M | 190K | – | Jan 5, 2026 | Jan 5, 2026 | |||||||||
|
Mancini Marianna
· Officer
4 operations
−$1.9M
|
Mancini Marianna | Officer | 4 operations | $32.29–$35.07 | −58K | −$1.9M | 409K | – | Jan 5, 2026 | Jan 5, 2026 | |||||||||
|
Lian Brian
· Director, Officer
4 operations
−$7.7M
|
Lian Brian | Director, Officer | 4 operations | $32.29–$35.07 | −233K | −$7.7M | 2.6M | – | Jan 5, 2026 | Jan 5, 2026 | |||||||||
|
Zante Greg
· Officer
3 operations
164K
|
Zante Greg | Officer | 3 operations | – | 164K | – | 91K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Mancini Marianna
· Officer
3 operations
164K
|
Mancini Marianna | Officer | 3 operations | – | 164K | – | 91K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Lian Brian
· Director, Officer
3 operations
479K
|
Lian Brian | Director, Officer | 3 operations | – | 479K | – | 176K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Singleton J. Matthew
· Director
2 operations
24K
|
Singleton J. Matthew | Director | 2 operations | – | 24K | – | 20K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Macartney Lawson
· Director
2 operations
24K
|
Macartney Lawson | Director | 2 operations | – | 24K | – | 20K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Rowland Charles A. Jr
· Director
2 operations
24K
|
Rowland Charles A. Jr | Director | 2 operations | – | 24K | – | 20K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Foehr Matthew W.
· Director
Sell
−$562K
|
Foehr Matthew W. | Director | Sell | $35.11 | −16K | −$562K | 132K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Foehr Matthew W.
· Director
2 operations
0
|
Foehr Matthew W. | Director | 2 operations | $3.33 | 0 | – | 0 | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
|
Foehr Matthew W.
· Director
2 operations
24K
|
Foehr Matthew W. | Director | 2 operations | – | 24K | – | 20K | – | Jan 2, 2026 | Jan 5, 2026 | |||||||||
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396 reporting institutions disclosed VKTX 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.