ALGMAllegro MicroSystems, Inc.

$36.90

Who owns ALGM

311 institutions reported holding ALGM for 2026Q1, together 74% of the company, more than the 290 a quarter earlier.

311

Institutions reporting a position · as of 2026Q1 · up from 290 the quarter before

Shares held by institutions
137.9M

Shares held by institutions · 74% of the company · long US equity positions only, as reported on Form 13F

Reported value
$4.31B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
41%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
22
New positions
61
Positions exited
44
Added to
113
Reduced
80
Top 10 holdersof the company
52%
Institutional ownership by quarter, 2020Q4 to 2026Q1
QuarterFilersSharesReported value
2026Q1311137.9M$4.31B
2025Q4290136.5M$3.60B
2025Q3291135.3M$3.95B
2025Q2267145.4M$4.97B
2025Q1286156.9M$3.94B
2024Q4255142.0M$3.11B
2024Q3244142.7M$3.32B
2024Q2268107.2M$3.03B
2024Q1275103.9M$2.80B
2023Q428796.3M$2.91B
2023Q331098.4M$2.98B
2023Q234997.7M$4.40B
2023Q131097.4M$4.67B
2022Q421896.4M$2.89B
2022Q316990.4M$1.97B
2022Q216888.4M$1.83B
Largest reported holders, 2026Q1
HolderShares% of companyValue
FMR LLC27.4M15%$865M
VANGUARD GROUP INC14.4M7.8%$453M
BlackRock Inc.12.5M6.7%$394M
Capital Research Global Investors12.4M6.7%$392M
Invesco Ltd.8.8M4.7%$276M
JPMORGAN CHASE & CO8.7M4.7%$243M
STATE STREET CORP5.2M2.8%$165M
MARTIN CURRIE LTD2.9M1.5%$90M
GEODE CAPITAL MANAGEMENT LLC2.5M1.3%$77M
MORGAN STANLEY2.3M1.2%$72M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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