Stock Ownership/ALGM

Allegro MicroSystems Inc (ALGM): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ALGM · Information Technology. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
14
13F filers
Aggregate Value
$402.8M
Across holders
Last Price
$36.27
2026-10-08
Sector
Information Technology
GICS
Quarterly fund activity7 increased7 reduced7 exited
Full exits: RENAISSANCE TECHNOLOGIES LLC, Bridgewater Associates, LP, CITADEL ADVISORS LLC, MILLENNIUM MANAGEMENT LLC, Schonfeld Strategic Advisors LLC, TUDOR INVESTMENT CORP ET AL, Brevan Howard Capital Management LP
Institutional Holders of ALGM
↗
14 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund2.95M$205.1M50.9%0.2%Added+$5.7MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund1.12M$78.1M19.4%0.1%Reduced$-23.9MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund494K$33.4M8.3%0.0%Added+$33.2MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund344K$23.9M5.9%0.0%Reduced$-20.6MQ2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund325K$22.7M5.6%0.1%Added+$918KQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund267K$18.6M4.6%0.0%Added+$18.6MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund95K$6.6M1.6%0.0%Reduced$-19.9MQ2 2026
ArrowMark Colorado Holdings LLC
CIK 0001483859
Hedge Fund83K$5.8M1.4%0.2%Reduced$-2.6MQ2 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund63K$4.4M1.1%0.0%Added—Q2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund18K$1.3M0.3%0.0%Added$-1.5MQ2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$205.1M· 50.9% of total· 0.2% port· 2.95M sh· +$5.7M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$78.1M· 19.4% of total· 0.1% port· 1.12M sh· $-23.9M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$33.4M· 8.3% of total· 0.0% port· 494K sh· +$33.2M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$23.9M· 5.9% of total· 0.0% port· 344K sh· $-20.6M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$22.7M· 5.6% of total· 0.1% port· 325K sh· +$918K QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$18.6M· 4.6% of total· 0.0% port· 267K sh· +$18.6M QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$6.6M· 1.6% of total· 0.0% port· 95K sh· $-19.9M QoQ· Q2 2026
ArrowMark Colorado Holdings LLCReduced
Hedge Fund
$5.8M· 1.4% of total· 0.2% port· 83K sh· $-2.6M QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$4.4M· 1.1% of total· 0.0% port· 63K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$1.3M· 0.3% of total· 0.0% port· 18K sh· $-1.5M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$1.1M· 0.3% of total· 0.0% port· 15K sh· — QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$927K· 0.2% of total· 0.0% port· 13K sh· $-1.2M QoQ· Q2 2026
MAVERICK CAPITAL LTDReduced
Hedge Fund
$703K· 0.2% of total· 0.0% port· 10K sh· $-2.2M QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$181K· 0.0% of total· 0.0% port· 3K sh· $-42K QoQ· Q2 2026
1–10 of 14
1 / 2
Loading recent insider activity…
← Stock ownership