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Disclosery

IRWD IRONWOOD PHARMACEUTICALS INC

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COMMON STOCK (common), issuer CIK 1446847

206 managers (212 13F filers) reported a position in IRWD shares at 2026-06-30, 160,555,185 shares in all. 23 filers opened a position and 36 filers sold out during the quarter.

Managers
206
13F filers
212
New
23
Added
73
Reduced
84
Sold out
36
Shares held by filers
160,555,185

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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
BlackRock, Inc.in group BlackRock, Inc.17,788,557$74.9M<0.01%+4,425,62713F-HRTimelineGroup
ARMISTICE CAPITAL, LLC13,932,000$58.7M1.62%-1,096,00013F-HRTimeline
VANGUARD GROUP INCgroup of 5 filers holding13,787,423$58M-643,305Timeline
Sarissa Capital Management LP9,188,635$38.7M21.75%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP8,809,601$37.1M<0.01%+1,352,65713F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/8,683,803$36.6M<0.01%+89613F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC7,993,226$33.7M0.05%-67,84713F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC6,465,921$27.2M0.01%-1,069,15913F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC5,853,331$24.6M0.03%-723,94113F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC4,831,657$20.3M<0.01%+288,13513F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP4,556,089$19.2M0.01%-1,292,18713F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP4,290,093$18.1M0.02%-234,97113F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC4,065,964$17.1M0.06%+433,48713F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC3,313,808$14M<0.01%+623,17413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co3,302,242$13.9M<0.01%-1,435,61513F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.3,231,238$13.6M0.02%-117,56813F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …3,017,089$12.7M0.01%-380,15313F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,522,891$10.6M<0.01%+440,83613F-HRTimelineGroup
MACKENZIE FINANCIAL CORP2,367,493$9.97M0.01%+1,807,45913F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,859,914$7.83M<0.01%+1,035,09513F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…1,811,714$7.63M0.01%-23,71013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,373,974$5.78M<0.01%+108,13213F-HRTimelineGroup
Hillsdale Investment Management Inc.1,250,428$5.26M0.12%+13,80013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,206,198$5.08M<0.01%+1,147,34813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\1,158,138$4.88M<0.01%+33,14913F-HRTimelineGroup
Pacer Advisors, Inc.1,095,513$4.61M0.01%-38,99913F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources1,006,979$4.24M<0.01%+262,34113F-HRTimelineGroup
FMR LLCin group FMR LLC909,488$3.83M<0.01%+119,10213F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD778,515$3.28M0.01%+180,35613F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC725,085$3.05M<0.01%-38,87013F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC658,457$2.77M<0.01%-54,73013F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC630,072$2.65M0.11%+120,13113F-HRTimelineGroup
HRT FINANCIAL LP577,337$2.43M<0.01%new13F-HRTimeline
IEQ CAPITAL, LLC561,588$2.36M0.01%-181,13513F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC537,199$2.26M<0.01%+87,36013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp508,880$2.14M<0.01%+24,84413F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC502,403$2.12M<0.01%+384,12713F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC484,450$2.04M<0.01%+338,63113F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…468,821$1.97M<0.01%+15,30613F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO459,417$1.93M<0.01%-283,13113F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC438,911$1.85M0.01%+310,66813F-HRTimeline
WEDGE CAPITAL MANAGEMENT L L P/NC435,650$1.83M0.03%-104,84213F-HRTimeline
SEGALL BRYANT & HAMILL, LLC408,064$1.72M0.02%+129,86313F-HRTimeline
Invesco Ltd.in group Invesco Ltd.403,209$1.7M<0.01%-144,15113F-HRTimelineGroup
Man Group plcin group Man Group plc392,117$1.65M<0.01%-148,74713F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC389,793$1.64M0.03%-50,70013F-HRTimeline
UBS Group AGin group UBS Group AG389,529$1.64M<0.01%-543,69613F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …375,288$1.58M<0.01%013F-HRTimelineGroup
RITHOLTZ WEALTH MANAGEMENT360,094$1.52M0.02%+272,55913F-HR/ATimeline
Nuveen, LLCin group TIAA355,372$1.5M<0.01%+121,96013F-HRTimelineGroup
CM Management, LLC350,000$1.47M0.94%013F-HRTimeline
Qube Research & Technologies Ltd347,985$1.47M<0.01%-1,242,09613F-HRTimeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…342,998$1.44M<0.01%013F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC342,293$1.44M0.01%-166,95413F-HRTimeline
Virtus Investment Advisers, LLCgroup of 2 filers holding318,598$1.34M+184,429Timeline
LSV ASSET MANAGEMENT308,271$1.3M<0.01%013F-HRTimeline
CWA Asset Management Group, LLC290,366$1.22M0.04%new13F-HRTimeline
GLOBEFLEX CAPITAL L P259,809$1.09M0.14%013F-HRTimeline
GSA CAPITAL PARTNERS LLP259,512$1.09M0.07%-394,93313F-HRTimeline
CITIGROUP INCin group CITIGROUP INC226,824$955K<0.01%+187,41913F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…224,821$946K<0.01%-36,96813F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO212,575$914K<0.01%+94,38413F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…219,445$913K<0.01%-7,24313F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC208,019$876K<0.01%-160,35113F-HRTimelineGroup
RHUMBLINE ADVISERS205,095$863K<0.01%+12,16113F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P204,991$863K0.02%013F-HRTimeline
EVOLVE PRIVATE WEALTH, LLC186,864$787K0.05%+171,39713F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC180,929$762K0.01%-3,40813F-HRTimelineGroup
Creative Planningin group Creative Planning177,030$745K<0.01%-49013F-HRTimelineGroup
KLP KAPITALFORVALTNING AS174,200$733K<0.01%013F-HRTimeline
Mariner, LLCin group Mariner, LLC168,472$709K<0.01%-39,30713F-HRTimelineGroup
OMERS ADMINISTRATION Corp159,010$669K<0.01%-67,30013F-HRTimeline
Rafferty Asset Management, LLC152,878$644K<0.01%-63,74513F-HRTimeline
Quantinno Capital Management LP150,604$634K<0.01%+20,90113F-HRTimeline
ALLIANCEBERNSTEIN L.P.165,790$582K<0.01%013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…132,748$559K<0.01%-32,34613F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD130,900$551K<0.01%-4,10013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC129,700$546K<0.01%-492,54713F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…129,237$544K<0.01%-1,342,92013F-HRTimelineGroup
SG Americas Securities, LLC129,280$544K<0.01%+15,65013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding128,738$544K+1,939Timeline
PRICE T ROWE ASSOCIATES INC /MD/128,772$543K<0.01%+4,45813F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC126,100$542K<0.01%+96,39413F-HRTimelineGroup
Arax Advisory Partners126,966$535K<0.01%+125,26313F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV126,160$531K<0.01%+11,08013F-HR/ATimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.122,907$517K<0.01%+74,96913F-HRTimelineGroup
Optimist Retirement Group LLC102,054$430K0.17%+7,22313F-HRTimeline
State of Wyoming101,781$428K0.04%-26,39413F-HRTimeline
Cercano Management LLC101,378$427K0.06%013F-HR/ATimeline
BARCLAYS PLCin group BARCLAYS PLC100,123$422K<0.01%+10,15313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC99,526$419K<0.01%+18513F-HRTimelineGroup
Engineers Gate Manager LP98,052$413K0.01%+18,20013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…96,208$405K<0.01%+32,44113F-HRTimelineGroup
Integrated Quantitative Investments LLC93,689$394K0.06%-458,41513F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.90,321$380K<0.01%-76013F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd84,156$354K0.01%-157,59013F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …82,315$339K<0.01%+3,12213F-HRTimelineGroup
Focus Partners Wealthgroup of 2 filers holding78,544$331K-40,713Timeline
PROFUND ADVISORS LLC77,754$327K0.01%-19,52713F-HRTimeline
SmartHarvest Portfolios, LLC75,462$318K0.1%013F-HRTimeline
Pallas Capital Advisors LLC73,996$312K0.01%-6,57113F-HRTimeline
CAPTRUST FINANCIAL ADVISORS71,706$302K<0.01%-3,22413F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC66,899$282K<0.01%+34,15313F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…59,925$252K<0.01%-7,10513F-HRTimeline
AXQ CAPITAL, LP47,028$198K0.02%+34,07913F-HRTimeline
Merit Financial Group, LLC44,799$189K<0.01%-9,90813F-HR/ATimeline
Police & Firemen's Retirement System of…44,115$186K<0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …42,920$181K<0.01%-8513F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND41,869$176K<0.01%013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC39,964$168K<0.01%new13F-HRTimelineGroup
BRIGHTON JONES LLC39,881$168K<0.01%-15813F-HRTimeline
Vise Technologies, Inc.36,850$155K<0.01%+7,17013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC35,531$150K<0.01%new13F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP35,529$150K<0.01%new13F-HRTimelineGroup
GRIMES & Co WEALTH MANAGEMENT, LLC34,806$147K<0.01%+8,91913F-HRTimeline
Amundiin group Amundi32,991$139K<0.01%-371,24613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC31,163$131K<0.01%-7,88013F-HRTimeline
Schonfeld Strategic Advisors LLC28,428$120K<0.01%-29,94913F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS28,385$120K<0.01%-17,25813F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd27,646$116K<0.01%new13F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC27,644$116K<0.01%-262,54513F-HRTimelineGroup
ProShare Advisors LLC26,848$113K<0.01%-3,62613F-HRTimeline
Krilogy Financial LLC26,348$111K<0.01%-6,84613F-HRTimeline
China Universal Asset Management Co., L…26,198$110K0.01%-2,73813F-HRTimeline
LPL Financial LLC25,826$109K<0.01%new13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC25,478$107K<0.01%-1,00013F-HRTimeline
E Fund Management Co., Ltd.21,556$90.8K<0.01%-5,67413F-HRTimeline
ROYCE & ASSOCIATES LP18,553$78.1K<0.01%new13F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC18,400$77.5K0.01%new13F-HRTimeline
Magnus Financial Group LLC18,005$75.8K0.01%new13F-HRTimeline
Broderick Brian C18,000$75.8K0.01%013F-HRTimeline
HighTower Advisors, LLC16,639$70K<0.01%-3,28113F-HRTimeline
MAI Capital Management16,408$69.1K<0.01%+9,84413F-HRTimeline
NorthCrest Asset Manangement, LLC14,476$67.6K<0.01%-2,92313F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc15,904$67K<0.01%+1,61613F-HRTimelineGroup
Integrated Wealth Concepts LLC15,863$66.8K<0.01%-12,70913F-HRTimeline
XPONANCE LLC15,599$65.7K<0.01%+1,26213F-HRTimeline
Cetera Investment Advisers15,005$63.2K<0.01%+3,05613F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…14,913$62.8K<0.01%+3,50713F-HRTimelineGroup
Calamos Advisors LLCin group Calamos Advisors LLC14,520$61.1K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…13,773$58K<0.01%013F-HRTimelineGroup
Abel Hall, LLC13,450$56.6K0.01%+54213F-HRTimeline
Range Financial Group LLC12,868$54.2K0.01%-420,38813F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC12,448$52.4K<0.01%-6213F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC12,025$50.6K<0.01%+65013F-HRTimelineGroup
Ariadne Wealth Management, LP11,957$50.3K0.02%-60713F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…11,905$50.1K<0.01%-8,43113F-HRTimelineGroup
Stonebrook Private Inc.10,979$46.2K0.01%+5313F-HRTimeline
Allegiance Financial Group Advisory Ser…10,875$45.8K0.01%+15813F-HRTimeline
Chicago Partners Investment Group LLC11,972$45.4K<0.01%-6,51113F-HRTimeline
Savvy Advisors, Inc.10,332$43.5K<0.01%new13F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC10,269$43.2K<0.01%-1,11913F-HRTimeline
Bull Harbor Capital LLC10,128$42.6K0.01%-3,59313F-HRTimeline
TWO SIGMA SECURITIES, LLC10,030$42.2K<0.01%new13F-HRTimeline
Global Retirement Partners, LLC8,493$35.8K<0.01%13F-HRTimeline
Essential Partners LLC6,232$26.2K0.01%-15,87013F-HRTimeline
Owl Creek Wealth Partners LLC6,195$26.1K0.01%013F-HRTimeline
Private Wealth Asset Management, LLC6,000$25.3K<0.01%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…5,827$24.5K<0.01%+2,74813F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,127$22K<0.01%+3,66613F-HRTimelineGroup
Allworth Financial LP4,593$19.3K<0.01%+59613F-HRTimeline
Quantbot Technologies LP4,187$17.6K<0.01%+3,43113F-HRTimeline
GF FUND MANAGEMENT CO. LTD.3,452$14.5K<0.01%-18413F-HRTimeline
Caitong International Asset Management …3,076$12.9K<0.01%+2,55413F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,732$11.5K<0.01%013F-HRTimelineGroup
NewEdge Advisors, LLC2,392$10.1K<0.01%new13F-HRTimeline
True Wealth Design, LLC2,390$10.1K<0.01%+2913F-HRTimeline
GAMMA Investing LLC2,382$10K<0.01%-2913F-HRTimeline
IFP Advisors, Inc2,316$9.75K<0.01%-1,71713F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP2,286$9.44K<0.01%+29313F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…2,241$9.44K<0.01%-6,41813F-HR/ATimeline
Rialto Wealth Management, LLC2,174$9.15K<0.01%013F-HRTimeline
WealthCollab, LLC1,970$8.29K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC1,763$7.42K<0.01%-2113F-HRTimeline
Physician Wealth Advisors, Inc.1,669$7.03K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.1,646$6.93K<0.01%+13213F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC1,627$6.85K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.1,311$5.52K<0.01%+1,20113F-HRTimelineGroup
SBI Securities Co., Ltd.1,311$5.52K<0.01%+2513F-HRTimeline
Fortitude Family Office, LLC1,114$4.69K<0.01%new13F-HRTimeline
IAG Wealth Partners, LLC1,000$4.21K<0.01%013F-HRTimeline
Sterling Capital Management LLC782$3.29K<0.01%-57113F-HRTimeline
Truvestments Capital LLC643$2.71K<0.01%new13F-HRTimeline
FIDUCIARY FINANCIAL ADVISORS569$2.4K<0.01%new13F-HRTimeline
Basecamp Wealth Advisors LLC542$2.28K<0.01%-5413F-HRTimeline
Avion Wealth516$2K<0.01%+10813F-HRTimeline
Farther Finance Advisors, LLC395$1.67K<0.01%-1,14013F-HRTimeline
SJS Investment Consulting Inc.388$1.63K<0.01%+8313F-HRTimeline
SIGNATUREFD, LLC304$1.28K<0.01%-43213F-HRTimeline
Quarry LP273$1.15K<0.01%new13F-HRTimeline
Covestor Ltd317$1K<0.01%+22213F-HRTimeline
CoreCap Advisors, LLC235$989<0.01%013F-HRTimeline
C M BIDWELL & ASSOCIATES LTD225$947<0.01%new13F-HRTimeline
Pinnacle Wealth Planning Services, Inc.201$846<0.01%013F-HRTimeline
Dogwood Wealth Management LLC189$796<0.01%new13F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/136$573<0.01%-43,95813F-HRTimelineGroup
Wealth Enhancement Trust Services, Inc.119$501<0.01%new13F-HR/ATimeline
Clean Yield Group85$358<0.01%013F-HRTimeline
Clearstead Advisors, LLC73$308<0.01%new13F-HRTimeline
Keating Financial Advisory Services, In…66$278<0.01%013F-HRTimeline