T. Rowe Price Investment Management, Inc.
· New
Change
+1.3M
Date
Q1 2026
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
T. Rowe Price Investment Management, Inc.
· New
Change
+1.3M
Date
Q1 2026
|
T. Rowe Price Investment Management, Inc. | New· Q1 2026 | – | +1.3M | – | Q1 2026 | |||||
|
BlackRock
· Added
Change
+705K
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | – | +705K | – | Q1 2026 | |||||
|
Vanguard
· Added
Change
+606K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +606K | – | Q1 2026 | |||||
|
Schonfeld Strategic Advisors LLC
· Added
Change
+435K
Date
Q1 2026
|
Schonfeld Strategic Advisors LLC | Added· Q1 2026 | – | +435K | – | Q1 2026 | |||||
|
Kadensa Capital Ltd
· Exited
Change
−395K
Δ Own
−100.0%
Date
Q1 2026
|
Kadensa Capital Ltd | Exited· Q1 2026 | – | −395K | −100.0% | Q1 2026 | |||||
|
Driehaus Capital Management LLC
· New
Change
+381K
Date
Q1 2026
|
Driehaus Capital Management LLC | New· Q1 2026 | – | +381K | – | Q1 2026 | |||||
|
Alliancebernstein L.P.
· Added
Change
+291K
Date
Q1 2026
|
Alliancebernstein L.P. | Added· Q1 2026 | – | +291K | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
Change
+281K
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | – | +281K | – | Q1 2026 | |||||
|
Needham Investment Management LLC
· New
Change
+200K
Date
Q1 2026
|
Needham Investment Management LLC | New· Q1 2026 | – | +200K | – | Q1 2026 | |||||
|
Geode
· Added
Change
+193K
Date
Q1 2026
|
Geode | Added· Q1 2026 | – | +193K | – | Q1 2026 | |||||
|
S Squared Technology, LLC
· New
Change
+193K
Date
Q1 2026
|
S Squared Technology, LLC | New· Q1 2026 | – | +193K | – | Q1 2026 | |||||
|
State Street
· Added
Change
+176K
Date
Q1 2026
|
State Street | Added· Q1 2026 | – | +176K | – | Q1 2026 | |||||
|
Polar Asset Management Partners Inc.
· Added
Change
+175K
Date
Q1 2026
|
Polar Asset Management Partners Inc. | Added· Q1 2026 | – | +175K | – | Q1 2026 | |||||
|
Atreides Management, LP
· Added
Change
+166K
Date
Q1 2026
|
Atreides Management, LP | Added· Q1 2026 | – | +166K | – | Q1 2026 | |||||
|
UBS Group AG
· Added
Change
+130K
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | – | +130K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Hsieh Wen Hsuan
· Director
Grant (A)
5K
|
Hsieh Wen Hsuan | Director | Grant (A) | – | 5K | – | 5K | – | Jun 8, 2026 | Jun 10, 2026 | |||||||||
|
Chen Timothy
· Director
Grant (A)
5K
|
Chen Timothy | Director | Grant (A) | – | 5K | – | 53K | – | Jun 8, 2026 | Jun 10, 2026 | |||||||||
|
Banks Bernard Bennett
· Director
Grant (A)
5K
|
Banks Bernard Bennett | Director | Grant (A) | – | 5K | – | 5K | – | Jun 8, 2026 | Jun 10, 2026 | |||||||||
|
Tautges Joseph A.
· Director
Grant (A)
5K
|
Tautges Joseph A. | Director | Grant (A) | – | 5K | – | 54K | – | Jun 8, 2026 | Jun 10, 2026 | |||||||||
|
Zhang Ker
· Director
Grant (A)
5K
|
Zhang Ker | Director | Grant (A) | – | 5K | – | 29K | – | Jun 8, 2026 | Jun 10, 2026 | |||||||||
|
Winzeler Jeffrey G.
· CFO
2 operations
0
|
Winzeler Jeffrey G. | CFO | 2 operations | $16.80 | 0 | – | 105K | – | Jun 2, 2026 | Jun 4, 2026 | |||||||||
|
Chen Timothy
· Director
4 operations
−$5.6M
|
Chen Timothy | Director | 4 operations | $78.85–$81.57 | −71K | −$5.6M | 0 | – | May 27, 2026 | May 29, 2026 | |||||||||
|
Winzeler Jeffrey G.
· CFO
2 operations
0
|
Winzeler Jeffrey G. | CFO | 2 operations | $16.80 | 0 | – | 111K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Hanson Scott McLean
· Director
2 operations
0
|
Hanson Scott McLean | Director | 2 operations | $8.12 | 0 | – | 69K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Chen Sean Chihhsiang
· Officer
2 operations
−$3.9M
|
Chen Sean Chihhsiang | Officer | 2 operations | $70.53–$71.37 | −56K | −$3.9M | 120K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Chen Sean Chihhsiang
· Officer
2 operations
0
|
Chen Sean Chihhsiang | Officer | 2 operations | $5.88 | 0 | – | 1 | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Esaka Fumihide
· Director
5 operations
0
|
Esaka Fumihide | Director | 5 operations | $8.12–$12.60 | 0 | – | 185K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Winzeler Jeffrey G.
· CFO
2 operations
−$1.8M
|
Winzeler Jeffrey G. | CFO | 2 operations | $69.90–$70.65 | −26K | −$1.8M | 94K | – | May 14, 2026 | May 18, 2026 | |||||||||
|
Winzeler Jeffrey G.
· CFO
2 operations
0
|
Winzeler Jeffrey G. | CFO | 2 operations | $16.80 | 0 | – | 117K | – | May 14, 2026 | May 18, 2026 | |||||||||
|
Hanson Scott McLean
· Director
3 operations
−$706K
|
Hanson Scott McLean | Director | 3 operations | $68.62–$70.50 | −10K | −$706K | 203K | – | May 14, 2026 | May 18, 2026 | |||||||||
U
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100 reporting institutions disclosed AMBQ 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.