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Disclosery

INSM INSMED INC

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Stock (common), issuer CIK 1104506

655 managers (675 13F filers) reported a position in INSM shares at 2026-03-31, 220,940,103 shares in all. 89 filers opened a position and 95 filers sold out during the quarter.

Managers
655
13F filers
675
New
89
Added
288
Reduced
216
Sold out
95
Shares held by filers
220,940,103

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
KBC Group NVin group KBC Group NV37,347$6.11M0.02%+3,33413F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…36,881$6.03M0.07%-12,19913F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP41,406$6.02M<0.01%+40,85413F-HRTimelineGroup
Atle Fund Management AB97,438$5.96M1.92%+69,56513F-HRTimeline
Calamos Advisors LLCin group Calamos Advisors LLC36,373$5.95M0.02%+4,21813F-HRTimelineGroup
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…35,850$5.86M0.69%-35,40613F-HRTimelineGroup
Quantinno Capital Management LP35,552$5.81M0.01%+16,01113F-HRTimeline
Korea Investment CORP35,429$5.79M0.01%-37,20013F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC35,392$5.79M0.35%new13F-HRTimelineGroup
CenterBook Partners LP35,232$5.76M0.31%new13F-HRTimeline
MCRAE CAPITAL MANAGEMENT INC35,145$5.75M1.19%+8,47013F-HRTimeline
iA Global Asset Management Inc.34,977$5.72M0.08%+8,29513F-HRTimeline
Orion Porfolio Solutions, LLC34,641$5.66M0.05%-1,94513F-HRTimeline
KENNEDY CAPITAL MANAGEMENT LLC34,526$5.65M0.12%+2,47713F-HRTimeline
Cetera Investment Advisers34,356$5.62M0.01%-4,08713F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC34,258$5.6M0.01%-5,47413F-HRTimelineGroup
Utah Retirement Systems34,031$5.56M0.06%+2,03013F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC32,190$5.26M0.02%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS30,382$4.97M0.02%-2,83713F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP30,249$4.95M0.01%+9,38413F-HRTimelineGroup
BRITISH COLUMBIA INVESTMENT MANAGEMENT …29,398$4.81M0.03%-8,10913F-HRTimeline
PensionDanmark Pensionsforsikringsaktie…29,055$4.75M0.05%-1,24013F-HRTimeline
1832 Asset Management L.P.28,900$4.73M0.01%new13F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK28,871$4.72M0.01%-7,43513F-HRTimelineGroup
GordonMD Global Investments LPin group GordonMD Global Investments LP28,587$4.67M3.26%013F-HRTimelineGroup
KVP Capital Advisors, LP28,497$4.66M3.48%013F-HRTimeline
PROFUND ADVISORS LLC27,937$4.57M0.17%+9313F-HRTimeline
Compound Planning, Inc.27,862$4.56M0.14%+21113F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC27,249$4.46M0.02%+29513F-HRTimelineGroup
Exome Asset Management LLC26,651$4.36M2.56%new13F-HRTimeline
NEXT CENTURY GROWTH INVESTORS LLC26,167$4.28M0.31%+5,86613F-HRTimeline
MML INVESTORS SERVICES, LLC24,773$4.05M0.01%-9,41713F-HRTimeline
HighVista Strategies LLC24,316$3.98M1.1%-15,08413F-HRTimeline
SHELTON CAPITAL MANAGEMENT24,217$3.96M0.09%-10213F-HRTimeline
Elo Mutual Pension Insurance Co24,125$3.94M0.07%+11,71613F-HRTimeline
Sanctuary Advisors, LLC23,969$3.92M0.02%+2,63313F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP23,888$3.91M0.04%+8,01813F-HRTimelineGroup
MACKENZIE FINANCIAL CORP23,771$3.89M<0.01%+2,15113F-HRTimeline
SummitTX Capital, L.P.23,153$3.79M0.12%-2,81413F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC22,949$3.75M0.01%+2,96013F-HRTimelineGroup
TOBAM22,312$3.65M0.95%+6,00413F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…22,303$3.65M0.03%013F-HRTimelineGroup
OP Asset Management Ltd22,222$3.63M0.04%-28,32713F-HR/ATimeline
Mariner, LLCin group Mariner, LLC22,072$3.61M<0.01%-13,20013F-HRTimelineGroup
Atria Investments, Inc21,845$3.57M0.04%+1,46013F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …22,247$3.55M<0.01%+2,23913F-HRTimelineGroup
ASR Vermogensbeheer N.V.21,496$3.51M0.04%+38813F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC21,484$3.51M<0.01%+2,08513F-HRTimelineGroup
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…20,774$3.4M<0.01%+19,10213F-HRTimelineGroup
SECTORAL ASSET MANAGEMENT INC19,668$3.38M2.8%+8,48613F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC20,300$3.32M0.01%-5,60013F-HRTimeline
EMERALD ADVISERS, LLCgroup of 2 filers holding20,220$3.31M-5,011Timeline
BAMCO INC /NY/in group Baron Capital20,000$3.27M0.01%-18,20013F-HRTimelineGroup
Silvant Capital Management LLC19,905$3.25M0.11%+32113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…19,020$3.11M0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.18,657$3.05M<0.01%-61913F-HRTimelineGroup
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…18,506$3.03M0.01%+4,50213F-HRTimelineGroup
Wealthfront Advisers LLC18,404$3.01M0.01%+8,41313F-HRTimeline
Eurizon Capital SGR S.p.A.18,473$3M0.01%+4,50413F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…18,200$2.98M0.01%+17,84213F-HRTimelineGroup
Baird Financial Group, Inc.in group Baird Financial Group, Inc.17,688$2.89M<0.01%-1,99613F-HRTimelineGroup
SBI Okasan Asset Management Co.Ltd.18,000$2.76M0.11%-2,20013F-HRTimeline
Gulf International Bank (UK) Ltd16,545$2.71M0.06%+5,51213F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC16,050$2.62M0.01%-5,87913F-HRTimeline
OAK RIDGE INVESTMENTS LLC16,044$2.62M0.17%+2,23113F-HRTimeline
AMALGAMATED BANK15,921$2.6M0.02%-82213F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …15,921$2.6M0.11%-1,37013F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC15,875$2.6M<0.01%+9,93813F-HRTimelineGroup
Atom Investors LP15,768$2.58M0.18%new13F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP15,416$2.52M<0.01%-31713F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…15,410$2.52M0.07%+10,11313F-HRTimelineGroup
Investment Management Corp of Ontario15,221$2.49M0.03%+1,00013F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA15,203$2.49M<0.01%-45,57213F-HRTimelineGroup
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…14,836$2.43M0.01%-33013F-HRTimelineGroup
WCM INVESTMENT MANAGEMENT, LLC15,707$2.41M0.01%+5,33913F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …14,725$2.41M0.03%+1,57413F-HRTimelineGroup
Allianz Asset Management GmbHin group Allianz SE14,600$2.39M<0.01%-28,00713F-HRTimelineGroup
ROYAL LONDON ASSET MANAGEMENT LTD14,498$2.37M<0.01%+5,98813F-HRTimeline
Quantitative Investment Management, LLC14,305$2.34M0.24%+6,15713F-HRTimeline
Louisiana State Employees Retirement Sy…14,200$2.32M0.04%-10013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC13,447$2.2M0.01%-4,09513F-HRTimeline
CAPTRUST FINANCIAL ADVISORS13,252$2.17M<0.01%+7,86813F-HRTimeline
Capital Investment Advisors, LLC13,245$2.17M0.03%new13F-HR/ATimeline
ABN AMRO INVESTMENT SOLUTIONSin group ABN AMRO INVESTMENT SOLUTIONS13,143$2.15M0.03%+3,15413F-HRTimelineGroup
Sterling Capital Management LLC12,993$2.12M0.04%+10,81113F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…12,633$2.07M<0.01%new13F-HRTimelineGroup
Havemeyer Place LP12,461$2.04M0.24%+6,57013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…12,290$2.01M0.01%-60113F-HRTimelineGroup
Ilmarinen Mutual Pension Insurance Co12,000$1.96M0.02%new13F-HRTimeline
PKO Investment Management Joint-Stock Co11,800$1.93M0.16%+50013F-HRTimeline
AustralianSuper Pty Ltd11,670$1.91M0.01%+1,66513F-HRTimeline
Federation des caisses Desjardins du Qu…11,517$1.88M0.01%-3,62513F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC11,401$1.86M<0.01%-2,10413F-HRTimelineGroup
Draper Asset Management, LLC11,321$1.85M1.06%+913F-HRTimeline
AG2R LA MONDIALE GESTION D'ACTIFS11,244$1.84M0.08%+1,56713F-HRTimeline
E Fund Management Co., Ltd.11,016$1.8M0.05%13F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.11,006$1.8M<0.01%13F-HRTimelineGroup
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.11,000$1.8M0.07%new13F-HRTimelineGroup
Simplify Asset Management Inc.10,783$1.76M0.03%-26,10713F-HRTimeline
SIMPLEX TRADING, LLC10,715$1.75M0.05%new13F-HRTimeline
Maryland State Retirement & Pension Sys…10,484$1.71M0.03%013F-HRTimeline
Osmosis Investment Management UK Ltd10,475$1.71M0.05%-85013F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC10,309$1.69M0.01%new13F-HRTimelineGroup
Soleus Capital Management, L.P.10,250$1.68M0.07%-38,25013F-HRTimeline
Bellevue Group AGin group Bellevue Group AG10,034$1.64M0.04%-3,88113F-HRTimelineGroup
Gotham Asset Management, LLC10,010$1.64M0.01%-11,75213F-HRTimeline
Vestmark Advisory Solutions, Inc.9,933$1.62M0.02%+41913F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC9,808$1.6M0.01%+4,79413F-HRTimelineGroup
M&T Bank Corpin group M&T Bank Corp9,462$1.55M0.01%+31213F-HR/ATimelineGroup
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.9,293$1.52M0.05%new13F-HRTimelineGroup
GROUP ONE TRADING LLC9,094$1.49M0.05%new13F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…9,082$1.48M<0.01%-1,34513F-HRTimeline
FORMULA GROWTH LTD9,000$1.47M0.66%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…8,910$1.46M<0.01%+2,05013F-HRTimelineGroup
AlphaCentric Advisors LLC8,874$1.45M1.45%+1,28613F-HRTimeline
Waldron Private Wealth LLC8,810$1.44M0.06%013F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.8,601$1.41M0.01%-42913F-HRTimeline
FIG FINANCIAL ADVISORY SERVICES INC /ADV8,308$1.36M0.85%new13F-HRTimeline
S&CO INC8,300$1.36M0.08%013F-HRTimeline
F/m Investments LLC8,230$1.35M0.09%-5,01113F-HRTimeline
&PARTNERS8,198$1.34M0.01%+93913F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The8,078$1.32M0.02%+83613F-HRTimelineGroup
PRUDENTIAL PLCin group PRUDENTIAL PLC8,023$1.31M0.01%+4,12113F-HRTimelineGroup
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…8,008$1.31M0.01%-22,51913F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC7,926$1.3M0.04%-14,26413F-HRTimelineGroup
Yorktown Management & Research Co Inc7,925$1.3M1.08%-1,67513F-HRTimeline
Saudi Central Bank7,872$1.29M0.03%new13F-HRTimeline
CASTLEARK MANAGEMENT LLC7,790$1.27M0.04%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…7,788$1.27M0.04%+7813F-HRTimelineGroup
Snowden Capital Advisors LLC7,571$1.24M0.03%+33713F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A7,501$1.23M<0.01%-6,42613F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…7,429$1.21M<0.01%-9,34613F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\7,377$1.21M<0.01%-37113F-HRTimelineGroup
Pacer Advisors, Inc.7,279$1.19M<0.01%-8,30413F-HR/ATimeline
Arrowpoint Investment Partners (Singapo…in group Arrowpoint Investment Partner…7,018$1.15M1.67%-4,53813F-HRTimelineGroup
MYDA Advisors LLC7,000$1.14M0.27%-5,00013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC6,779$1.11M0.01%+3,55213F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC6,775$1.11M0.08%+5,37413F-HRTimeline
Vise Technologies, Inc.6,314$1.1M0.02%013F-HRTimeline
Summit Trail Advisors, LLC6,714$1.1M0.02%+2,25013F-HRTimeline
Ethic Inc.6,670$1.09M0.02%+2,66913F-HRTimeline
Nan Fung Group Holdings Ltd6,580$1.08M0.89%new13F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC6,384$1.04M0.06%-39013F-HRTimeline
North Dakota State Investment Board6,053$990K0.04%-50513F-HRTimeline
NewEdge Advisors, LLC6,015$984K<0.01%+3,43313F-HR/ATimeline
Aureus Asset Management, LLC6,000$981K0.07%new13F-HRTimeline
ING GROEP NV5,996$980K0.01%-116,94913F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC5,737$938K<0.01%+24913F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV5,732$937K<0.01%+16513F-HRTimeline
GROUPAMA ASSET MANAGMENT5,590$914K0.01%013F-HRTimeline
PINKERTON WEALTH, LLC5,248$913K0.08%+10013F-HRTimeline
J. Goldman & Co LP5,545$907K0.04%+4,11413F-HRTimeline
Fulton Bank, N.A.5,338$873K0.03%+1313F-HRTimeline
OneDigital Investment Advisors LLC5,245$858K0.01%+21313F-HRTimeline
E. Ohman J:or Asset Management AB5,239$857K0.02%013F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD5,193$849K0.01%-2,10013F-HRTimelineGroup
INCEPTIONR LLC5,172$846K0.2%new13F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…5,141$841K0.01%+1,21113F-HRTimelineGroup
Fideuram Asset Management (Ireland) dac5,536$778K0.1%-5,62213F-HRTimeline
Private Advisor Group, LLC4,749$777K<0.01%+8213F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd4,662$762K0.01%-1,43613F-HRTimelineGroup
MASTERINVEST Kapitalanlage GmbH4,640$759K0.08%new13F-HRTimeline
IMC-Chicago, LLC4,472$731K0.01%new13F-HRTimeline
Tema ETFs LLC4,417$722K0.05%+1,02213F-HRTimeline
Lombard Odier Asset Management (Switzer…4,403$720K0.03%new13F-HRTimeline
Sequoia Financial Advisors, LLC4,385$717K<0.01%-1,55513F-HRTimeline
Entropy Technologies, LP4,332$708K0.03%new13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…4,283$700K0.19%+81513F-HRTimelineGroup
CWM, LLCin group CWM, LLC4,244$694K<0.01%-10313F-HRTimelineGroup
Vestcor Inc4,238$693K0.02%013F-HRTimeline
Ikarian Capital, LLCin group Ikarian Capital, LLC4,214$689K0.1%-5,12313F-HRTimelineGroup
NewEdge Wealth, LLC4,208$688K0.01%+66813F-HRTimeline
UniSuper Management Pty Ltd4,200$687K<0.01%013F-HRTimeline
Meeder Advisory Services, Inc.group of 2 filers holding4,112$672K-715Timeline
Focus Partners Wealthin group Focus Partners Wealth4,063$664K<0.01%-3,11113F-HRTimelineGroup
Avior Wealth Management, LLC3,994$653K0.02%+1,62213F-HRTimeline
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…3,954$647K<0.01%+1,55413F-HRTimelineGroup
New York Life Investment Management LLCin group New York Life Investment Mana…3,950$646K0.01%+2,68913F-HRTimelineGroup
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise3,923$641K0.02%+2,10813F-HRTimelineGroup
HighTower Advisors, LLC3,897$637K<0.01%+86113F-HRTimeline
GraniteShares Advisors LLC3,894$637K0.46%-1113F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC3,737$611K0.01%-11113F-HRTimeline
DRW Securities, LLC3,698$605K0.03%+95413F-HRTimeline
ELEVATION POINT WEALTH PARTNERS, LLC3,674$601K0.01%+1,92513F-HRTimeline
ICICI Prudential Asset Management Co Ltd3,572$584K0.07%+15013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…3,521$576K0.01%new13F-HRTimelineGroup
INTRUST BANK NA3,518$575K0.05%-1,21713F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.3,500$572K0.01%-922,83913F-HRTimelineGroup
INSIGNEO ADVISORY SERVICES, LLC3,459$566K0.04%+81813F-HRTimeline
TCW GROUP INCin group TCW GROUP INC3,452$564K<0.01%+16713F-HRTimelineGroup
Laird Norton Wetherby Trust Company, LLCin group Laird Norton Wetherby Trust C…3,335$545K0.01%+92113F-HRTimelineGroup
LMR Partners LLPin group LMR Partners LLP3,300$540K<0.01%-104,21013F-HRTimelineGroup
Beacon Financial Advisory LLC3,288$538K0.12%+513F-HRTimeline
Janney Montgomery Scott LLC3,276$536K<0.01%+48813F-HRTimeline
Crossmark Global Holdings, Inc.3,212$525K0.01%+25813F-HRTimeline
Caisse de depot et placement du Quebec3,209$525K<0.01%-26,29113F-HRTimeline
PIER 88 INVESTMENT PARTNERS LLC3,200$523K0.13%-5013F-HR/ATimeline
Integrated Wealth Concepts LLC3,142$514K<0.01%new13F-HRTimeline
NorthRock Partners, LLC3,108$508K0.01%-1013F-HRTimeline
Abel Hall, LLC3,090$505K0.11%+47113F-HRTimeline