FMR LLC
· Added
+$922M
Change
+4.1M
Δ Own
+63.7%
Date
Q1 2026
MT
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
FMR LLC
· Added
+$922M
Change
+4.1M
Δ Own
+63.7%
Date
Q1 2026
|
FMR LLC | Added· Q1 2026 | +$922M | +4.1M | +63.7% | Q1 2026 | |||||
|
BlackRock
· Added
+$232M
Change
+1.0M
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | +$232M | +1.0M | – | Q1 2026 | |||||
|
T. Rowe Price Associates
· Reduced
−$228M
Change
−1.0M
Date
Q1 2026
|
T. Rowe Price Associates | Reduced· Q1 2026 | −$228M | −1.0M | – | Q1 2026 | |||||
|
Polar Capital Holdings PLC
· New
+$208M
Change
+931K
Date
Q1 2026
|
Polar Capital Holdings PLC | New· Q1 2026 | +$208M | +931K | – | Q1 2026 | |||||
|
T. Rowe Price Investment Management, Inc.
· Reduced
−$204M
Change
−914K
Date
Q1 2026
|
T. Rowe Price Investment Management, Inc. | Reduced· Q1 2026 | −$204M | −914K | – | Q1 2026 | |||||
|
JPMorgan Chase & Co
· Added
+$203M
Change
+909K
Date
Q1 2026
|
JPMorgan Chase & Co | Added· Q1 2026 | +$203M | +909K | – | Q1 2026 | |||||
|
Norges
· Exited
−$127M
Change
−569K
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$127M | −569K | −100.0% | Q1 2026 | |||||
|
Wellington Management Group LLP
· Added
+$119M
Change
+532K
Δ Own
+52.4%
Date
Q1 2026
|
Wellington Management Group LLP | Added· Q1 2026 | +$119M | +532K | +52.4% | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
+$102M
Change
+457K
Δ Own
+343.6%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | +$102M | +457K | +343.6% | Q1 2026 | |||||
|
Point72 Asset Management, L.P.
· Reduced
−$95M
Change
−426K
Δ Own
−77.2%
Date
Q1 2026
|
Point72 Asset Management, L.P. | Reduced· Q1 2026 | −$95M | −426K | −77.2% | Q1 2026 | |||||
|
Fenghe Fund Management PTE. Ltd.
· Reduced
−$93M
Change
−419K
Date
Q1 2026
|
Fenghe Fund Management PTE. Ltd. | Reduced· Q1 2026 | −$93M | −419K | – | Q1 2026 | |||||
|
Dimensional
· Reduced
−$93M
Change
−418K
Date
Q1 2026
|
Dimensional | Reduced· Q1 2026 | −$93M | −418K | – | Q1 2026 | |||||
|
Whale Rock Capital Management LLC
· Added
+$87M
Change
+392K
Δ Own
+50.0%
Date
Q1 2026
|
Whale Rock Capital Management LLC | Added· Q1 2026 | +$87M | +392K | +50.0% | Q1 2026 | |||||
|
Gw&k Investment Management, LLC
· Reduced
−$85M
Change
−379K
Date
Q1 2026
|
Gw&k Investment Management, LLC | Reduced· Q1 2026 | −$85M | −379K | – | Q1 2026 | |||||
|
Massachusetts Financial Services Co
· Added
+$81M
Change
+361K
Date
Q1 2026
|
Massachusetts Financial Services Co | Added· Q1 2026 | +$81M | +361K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Hwang Donghyun Thomas
· Officer
12 operations
−$1.0M
|
Hwang Donghyun Thomas | Officer | 12 operations | $367.30–$391.94 | −3K | −$1.0M | 30K | −8.1% | Jun 25, 2026 | Jun 29, 2026 | |||||||||
|
Daly Stephen G.
· Director
19 operations
−$5.8M
|
Daly Stephen G. | Director | 19 operations | $358.44–$391.07 | −16K | −$5.8M | 38K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Shanmugaraj Murugesan
· Director
Gift (G)
-1K
|
Shanmugaraj Murugesan | Director | Gift (G) | – | -1K | – | 5K | – | May 19, 2026 | May 21, 2026 | |||||||||
|
Bland Charles R.
· Director
Gift (G)
-300
|
Bland Charles R. | Director | Gift (G) | – | -300 | – | 14K | – | May 19, 2026 | May 20, 2026 | |||||||||
|
Kober John
· Officer
13 operations
−$2.7M
|
Kober John | Officer | 13 operations | $352.79–$377.70 | −8K | −$2.7M | 41K | – | May 18, 2026 | May 20, 2026 | |||||||||
|
Hwang Donghyun Thomas
· Officer
11 operations
−$936K
|
Hwang Donghyun Thomas | Officer | 11 operations | $353.32–$381.23 | −3K | −$936K | 32K | – | May 18, 2026 | May 20, 2026 | |||||||||
|
Bland Charles R.
· Director
Gift (G)
-400
|
Bland Charles R. | Director | Gift (G) | – | -400 | – | 14K | – | May 18, 2026 | May 20, 2026 | |||||||||
|
Dennehy Robert
· Officer
Grant (A)
$20K
|
Dennehy Robert | Officer | Grant (A) | $138.13 | 146 | $20K | 13K | – | May 15, 2026 | May 20, 2026 | |||||||||
|
Kober John
· Officer
Grant (A)
$15K
|
Kober John | Officer | Grant (A) | $138.13 | 108 | $15K | 49K | – | May 15, 2026 | May 20, 2026 | |||||||||
|
Hwang Donghyun Thomas
· Officer
Grant (A)
$12K
|
Hwang Donghyun Thomas | Officer | Grant (A) | $138.13 | 85 | $12K | 35K | – | May 15, 2026 | May 20, 2026 | |||||||||
|
Chung Peter Y.
· Director
Sell
−$16M
|
Chung Peter Y. | Director | Sell | $378.20 | −43K | −$16M | 7K | – | May 14, 2026 | May 18, 2026 | |||||||||
|
Bland Charles R.
· Director
Sell
−$304K
|
Bland Charles R. | Director | Sell | $380.00 | −800 | −$304K | 14K | – | May 13, 2026 | May 15, 2026 | |||||||||
|
Ribar Geoffrey G.
· Director
Sell
−$587K
|
Ribar Geoffrey G. | Director | Sell | $361.84 | −2K | −$587K | 13K | – | May 11, 2026 | May 13, 2026 | |||||||||
|
Hwang Donghyun Thomas
· Officer
9 operations
−$1.0M
|
Hwang Donghyun Thomas | Officer | 9 operations | $271.40–$281.59 | −4K | −$1.0M | 35K | – | Apr 30, 2026 | May 4, 2026 | |||||||||
|
Ingram Bryan
· Director
Grant (A)
776
|
Ingram Bryan | Director | Grant (A) | – | 776 | – | 2K | – | Mar 6, 2026 | Mar 10, 2026 | |||||||||
N
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484 reporting institutions disclosed MTSI 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.