Wellington Management Group LLP
· Added
Change
+2.4M
Δ Own
+320.7%
Date
Q1 2026
ST
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wellington Management Group LLP
· Added
Change
+2.4M
Δ Own
+320.7%
Date
Q1 2026
|
Wellington Management Group LLP | Added· Q1 2026 | – | +2.4M | +320.7% | Q1 2026 | |||||
|
T. Rowe Price Associates
· Added
Change
+1.6M
Date
Q1 2026
|
T. Rowe Price Associates | Added· Q1 2026 | – | +1.6M | – | Q1 2026 | |||||
|
Troluce Capital Advisors LLC
· New
Change
+653K
Date
Q1 2026
|
Troluce Capital Advisors LLC | New· Q1 2026 | – | +653K | – | Q1 2026 | |||||
|
Millennium Management LLC
· New
Change
+472K
Date
Q1 2026
|
Millennium Management LLC | New· Q1 2026 | – | +472K | – | Q1 2026 | |||||
|
Bank of America Corp
· Added
Change
+337K
Date
Q1 2026
|
Bank of America Corp | Added· Q1 2026 | – | +337K | – | Q1 2026 | |||||
|
Baillie Gifford & Co
· Added
Change
+328K
Date
Q1 2026
|
Baillie Gifford & Co | Added· Q1 2026 | – | +328K | – | Q1 2026 | |||||
|
Artisan Partners Limited Partnership
· New
Change
+315K
Date
Q1 2026
|
Artisan Partners Limited Partnership | New· Q1 2026 | – | +315K | – | Q1 2026 | |||||
|
Bvf Inc
· Added
Change
+282K
Date
Q1 2026
|
Bvf Inc | Added· Q1 2026 | – | +282K | – | Q1 2026 | |||||
|
T. Rowe Price Investment Management, Inc.
· New
Change
+251K
Date
Q1 2026
|
T. Rowe Price Investment Management, Inc. | New· Q1 2026 | – | +251K | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+173K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +173K | – | Q1 2026 | |||||
|
Dimensional
· Added
Change
+163K
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | – | +163K | – | Q1 2026 | |||||
|
Janus Henderson Group PLC
· Added
Change
+162K
Date
Q1 2026
|
Janus Henderson Group PLC | Added· Q1 2026 | – | +162K | – | Q1 2026 | |||||
|
Geode
· Added
Change
+156K
Date
Q1 2026
|
Geode | Added· Q1 2026 | – | +156K | – | Q1 2026 | |||||
|
Granahan Investment Management, LLC
· Added
Change
+144K
Date
Q1 2026
|
Granahan Investment Management, LLC | Added· Q1 2026 | – | +144K | – | Q1 2026 | |||||
|
Redmile Group, LLC
· Added
Change
+130K
Date
Q1 2026
|
Redmile Group, LLC | Added· Q1 2026 | – | +130K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Harrison Seth Loring
· Director
16 operations
0
|
Harrison Seth Loring | Director | 16 operations | – | 0 | – | 18K | – | Jul 16, 2026 | Jul 17, 2026 | |||||||||
|
McCauley Thomas
· Officer
Grant (A)
225K
|
McCauley Thomas | Officer | Grant (A) | – | 225K | – | 225K | – | Jul 15, 2026 | Jul 17, 2026 | |||||||||
|
Ticho Barry
· Officer
2 operations
−$236K
|
Ticho Barry | Officer | 2 operations | $32.62–$33.27 | −7K | −$236K | 28K | −20.8% | Jul 1, 2026 | Jul 6, 2026 | |||||||||
|
Allan Jonathan
· Officer
Sell
−$44K
|
Allan Jonathan | Officer | Sell | $29.95 | −1K | −$44K | 18K | – | Jun 16, 2026 | Jun 18, 2026 | |||||||||
|
Tzianabos Arthur
· Director
Grant (A)
18K
|
Tzianabos Arthur | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Smith Julie
· Director
Grant (A)
18K
|
Smith Julie | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Levin Arthur A.
· Director
Grant (A)
18K
|
Levin Arthur A. | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Krainer Adrian R.
· Director
Grant (A)
18K
|
Krainer Adrian R. | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Kaye Edward M. Md
· Director
Grant (A)
18K
|
Kaye Edward M. Md | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Harrison Seth Loring
· Director
Grant (A)
18K
|
Harrison Seth Loring | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Burstein Jennifer
· Director
Grant (A)
18K
|
Burstein Jennifer | Director | Grant (A) | – | 18K | – | 18K | – | Jun 3, 2026 | Jun 5, 2026 | |||||||||
|
Ticho Barry
· Officer
Sell
−$55K
|
Ticho Barry | Officer | Sell | $30.58 | −2K | −$55K | 35K | – | Jun 1, 2026 | Jun 3, 2026 | |||||||||
|
Ticho Barry
· Officer
Sell
−$74K
|
Ticho Barry | Officer | Sell | $32.79 | −2K | −$74K | 37K | – | May 1, 2026 | May 5, 2026 | |||||||||
|
Kahn Clare
· Director
Grant (A)
31K
|
Kahn Clare | Director | Grant (A) | – | 31K | – | 31K | – | Apr 3, 2026 | Apr 7, 2026 | |||||||||
|
Ticho Barry
· Officer
Sell
−$60K
|
Ticho Barry | Officer | Sell | $32.66 | −2K | −$60K | 39K | – | Apr 1, 2026 | Apr 3, 2026 | |||||||||
N
A
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A
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194 reporting institutions disclosed STOK 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.