Stock Ownership/INSM

Insmed Incorporated (INSM): Ownership & Insider Activity

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

Reported Holders
32
13F filers
Aggregate Value
$3.5B
Across holders
Last Price
$123.98
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity25 increased7 reduced5 exited
Full exits: AXIOM INVESTORS LLC /DE, VOLORIDGE INVESTMENT MANAGEMENT, LLC, RENAISSANCE TECHNOLOGIES LLC, Alphadyne Asset Management LP, Parallax Volatility Advisers, L.P.
Institutional Holders of INSM
↗
32 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
BAKER BROS. ADVISORS LP
CIK 0001263508
Hedge Fund8.80M$937.8M27.1%4.7%Added+$146.6MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund5.88M$626.7M18.1%0.3%Added$-391.6MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund2.56M$272.6M7.9%0.0%Added+$270.5MQ2 2026
MAVERICK CAPITAL LTD
CIK 0000934639
Hedge Fund2.15M$229.3M6.6%2.0%Added—Q2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund2.05M$218.4M6.3%0.1%Added+$203.7MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund1.68M$179.4M5.2%0.2%Added+$163.5MQ2 2026
Duquesne Family Office LLC
CIK 0001536411
Family Office1.42M$151.9M4.4%2.9%Added+$28.9MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund1.33M$141.4M4.1%0.2%Added+$140.3MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund1.24M$132.4M3.8%0.1%Added+$107.2MQ2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
Hedge Fund850K$90.6M2.6%0.1%Reduced$-5.3MQ2 2026
BAKER BROS. ADVISORS LPAdded
Hedge Fund
$937.8M· 27.1% of total· 4.7% port· 8.80M sh· +$146.6M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$626.7M· 18.1% of total· 0.3% port· 5.88M sh· $-391.6M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$272.6M· 7.9% of total· 0.0% port· 2.56M sh· +$270.5M QoQ· Q2 2026
MAVERICK CAPITAL LTDAdded
Hedge Fund
$229.3M· 6.6% of total· 2.0% port· 2.15M sh· — QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$218.4M· 6.3% of total· 0.1% port· 2.05M sh· +$203.7M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$179.4M· 5.2% of total· 0.2% port· 1.68M sh· +$163.5M QoQ· Q2 2026
Duquesne Family Office LLCAdded
Family Office
$151.9M· 4.4% of total· 2.9% port· 1.42M sh· +$28.9M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$141.4M· 4.1% of total· 0.2% port· 1.33M sh· +$140.3M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$132.4M· 3.8% of total· 0.1% port· 1.24M sh· +$107.2M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$90.6M· 2.6% of total· 0.1% port· 850K sh· $-5.3M QoQ· Q2 2026
Clearbridge Investments, LLCAdded
Hedge Fund
$76.3M· 2.2% of total· 0.1% port· 716K sh· +$7.7M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$65.7M· 1.9% of total· 0.1% port· 616K sh· +$51.0M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$65.3M· 1.9% of total· 0.0% port· 613K sh· +$65.3M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$57.3M· 1.7% of total· 0.1% port· 537K sh· +$54.6M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$53.5M· 1.5% of total· 0.0% port· 502K sh· $-3.5M QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$48.6M· 1.4% of total· 0.2% port· 455K sh· +$17.0M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$20.8M· 0.6% of total· 0.0% port· 195K sh· +$20.1M QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$20.6M· 0.6% of total· 0.0% port· 193K sh· — QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$16.3M· 0.5% of total· 0.1% port· 153K sh· +$444K QoQ· Q2 2026
Hudson Bay Capital Management LPAdded
Hedge Fund
$11.7M· 0.3% of total· 0.0% port· 109K sh· — QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$11.1M· 0.3% of total· 0.0% port· 104K sh· +$5.2M QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCReduced
Hedge Fund
$8.8M· 0.3% of total· 0.0% port· 82K sh· $-4.6M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$7.4M· 0.2% of total· 0.0% port· 70K sh· — QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$5.6M· 0.2% of total· 0.0% port· 53K sh· $-18.7M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$2.3M· 0.1% of total· 0.0% port· 22K sh· +$1.3M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$1.7M· 0.0% of total· 0.0% port· 16K sh· +$1.3M QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$764K· 0.0% of total· 0.0% port· 7K sh· $-2.0M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$707K· 0.0% of total· 0.0% port· 7K sh· — QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$504K· 0.0% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$384K· 0.0% of total· 0.0% port· 4K sh· +$16K QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$148K· 0.0% of total· 0.0% port· 1K sh· $-2.7M QoQ· Q2 2026
Ancora Advisors, LLCReduced
Hedge Fund
$21K· 0.0% of total· 0.0% port· 200 sh· $-1K QoQ· Q2 2026
1–10 of 32
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