ALGMAllegro MicroSystems, Inc.

$35.57+13% 1Y

Who owns ALGM

367 institutions reported holding ALGM for 2026Q2, together 80% of the company, more than the 315 a quarter earlier.

367

Institutions reporting a position · as of 2026Q2 · up from 315 the quarter before

Shares held by institutions
147.4M

Shares held by institutions · 80% of the company · long US equity positions only, as reported on Form 13F

Reported value
$10.2B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
43%

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

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
23
New positions
99
Positions exited
48
Added to
105
Reduced
101
Top 10 holdersof the company
58%
Shares sold shortsettled Sep 15, 2026
10.4M
Short interestof shares outstanding
5.6%
Days to coverat the average daily volume
5.2
Change in the short positionsince the Aug 31, 2026 count
−19%
Institutional ownership by quarter, 2020Q4 to 2026Q2
QuarterFilersSharesReported value
2026Q2367147.4M$10.2B
2026Q1315137.9M$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
2023Q235097.7M$4.40B
2023Q131097.4M$4.67B
2022Q421896.4M$2.89B
2022Q316990.4M$1.97B
Largest reported holders, 2026Q2
HolderShares% of companyValue
FMR LLC25.6M14%$1.78B
VANGUARD GROUP INC14.2M7.7%$988M
BlackRock Inc.13.9M7.5%$967M
Invesco Ltd.13.7M7.4%$952M
JPMORGAN CHASE & CO12.7M6.9%$845M
Capital Research Global Investors12.0M6.5%$836M
STATE STREET CORP5.7M3.1%$395M
PRICE T ROWE ASSOCIATES INC /MD/3.7M2.0%$258M
MARTIN CURRIE LTD2.9M1.6%$205M
GEODE CAPITAL MANAGEMENT LLC2.6M1.4%$184M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 202610.4M5.6%5.2
Aug 31, 202612.8M6.9%6.0
Aug 14, 20269.9M5.3%5.8
Jul 31, 202611.1M6.0%4.4
Jul 15, 202612.6M6.8%3.9
Jun 30, 202615.5M8.4%3.2
Jun 15, 202613.4M7.3%6.6
May 29, 202611.9M6.4%5.1
May 15, 202610.4M5.6%3.5
Apr 30, 202611.0M5.9%5.3
Apr 15, 202612.4M6.7%7.5
Mar 31, 202611.9M6.4%6.5

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. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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