STATE OF WISCONSIN INVESTMENT BOARD

Position in IRWD — Ironwood Pharmaceuticals Inc

CIK 854157 MADISON, WI

Back to IRWD Full portfolio

Position in IRWD

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$2,099,538

+$1,492,804 QoQ

Shares Held

598,159

+232.2% QoQ

Ownership

0.363%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

23 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in IRWD Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $146,075,839 across 40 Drug Manufacturers - Specialty & Generic names. IRWD ranks #15 (1.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ZTS	Zoetis Inc.	236,309	$27,934,086
2	VTRS	Viatris Inc	1,529,115	$20,658,343
3	NBIX	Neurocrine Biosciences Inc	96,261	$12,681,424
4	UTHR	UNITED THERAPEUTICS Corp	21,326	$12,645,891
5	TEVA	Teva Pharmaceutical Industries Ltd	361,622	$10,892,054
6	LNTH	Lantheus Holdings, Inc.	126,437	$9,590,246
7	ELAN	Elanco Animal Health Inc	313,166	$7,494,062
8	ALKS	Alkermes plc.	139,333	$4,926,814

All Filings in IRWD

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23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,099,538	598,159	+232.2%	Shares	Sole	2026-05-15
2025-12-31	$606,734	180,040	+1327.5%	Shares	Sole	2026-02-17
2025-03-31	$18,539	12,612	-97.4%	Shares	Sole	2025-05-15
2024-12-31	$2,111,422	476,619	-16.9%	Shares	Sole	2025-02-14
2024-09-30	$2,362,515	573,426	+226.6%	Shares	Sole	2024-11-14
2024-06-30	$1,144,677	175,564	+43.1%	Shares	Sole	2024-08-14
2024-03-31	$1,068,351	122,658	+2.3%	Shares	Sole	2024-05-14
2023-12-31	$1,371,587	119,894	+0.2%	Shares	Sole	2024-02-12
2023-09-30	$1,152,354	119,663	-4.3%	Shares	Sole	2023-11-14
2023-06-30	$1,330,297	125,028	-4.9%	Shares	Sole	2023-08-14
2023-03-31	$1,383,232	131,486	-10.2%	Shares	Sole	2023-05-15
2022-12-31	$1,813,908	146,401	-5.6%	Shares	Sole	2023-02-14
2022-09-30	$1,605,872	155,007	-6.2%	Shares	Sole	2022-11-14
2022-06-30	$1,905,067	165,227	-23.1%	Shares	Sole	2022-08-15
2022-03-31	$2,702,184	214,800	0.0%	Shares	Sole	2022-05-13
2021-12-31	$2,504,568	214,800	0.0%	Shares	Sole	2022-02-11
2021-09-30	$2,805,288	214,800	0.0%	Shares	Sole	2021-11-12
2021-06-30	$2,764,476	214,800	0.0%	Shares	Sole	2021-08-12
2021-03-31	$2,401,464	214,800	-5.3%	Shares	Sole	2021-05-17
2020-12-31	$2,584,391	226,900	-11.1%	Shares	Sole	2021-02-03
2020-09-30	$2,294,248	255,200	0.0%	Shares	Sole	2020-11-16
2020-06-30	$2,633,664	255,200	+7.6%	Shares	Sole	2020-08-12
2020-03-31	$2,392,339	237,100	—	Shares	Sole	2020-05-06
No filing history on record for this holder in this stock.