Mariner
IRWD icon

Mariner’s Ironwood Pharmaceuticals IRWD Stock Holding History

Mariner’s Portfolio IRWD Stock Details IRWD Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$709K Sell
168,472
-39,307
-19% -$151K ﹤0.01% 2217
2026
Q1 		$729K Buy
207,779
+93,660
+82% +$384K ﹤0.01% 2203
2025
Q4 		$384K Buy
114,119
+12,806
+13% +$33.3K ﹤0.01% 2648
2025
Q3 		$133K Sell
101,313
-60,261
-37% -$62.4K ﹤0.01% 3308
2025
Q2 		$116K Sell
161,574
-588,426
-78% -$462K ﹤0.01% 3210
2025
Q1 		$1.1M Buy
750,000
+644,036
+608% +$1.53M ﹤0.01% 1620
2024
Q4 		$469K Buy
105,964
+60,751
+134% +$246K ﹤0.01% 2249
2024
Q3 		$186K Sell
45,213
-35,216
-44% -$189K ﹤0.01% 2956
2024
Q2 		$523K Buy
80,429
+11,639
+17% +$82.3K ﹤0.01% 2011
2024
Q1 		$599K Buy
68,790
+41,854
+155% +$508K ﹤0.01% 1887
2023
Q4 		$308K Buy
26,936
+2,682
+11% +$26.5K ﹤0.01% 2323
2023
Q3 		$234K Sell
24,254
-5,657
-19% -$55.4K ﹤0.01% 2381
2023
Q2 		$318K Buy
29,911
+6,239
+26% +$67.1K ﹤0.01% 2072
2023
Q1 		$249K Sell
23,672
-881
-4% -$9.87K ﹤0.01% 2222
2022
Q4 		$304K Sell
24,553
-1,484
-6% -$16.8K ﹤0.01% 2017
2022
Q3 		$270K Buy
26,037
+1,483
+6% +$16.8K ﹤0.01% 1852
2022
Q2 		$283K Buy
24,554
+1,341
+6% +$15.8K ﹤0.01% 1300
2022
Q1 		$292K Buy
+23,213
New +$266K ﹤0.01% 1288

Other funds holding IRWD

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
SCM
Sarissa Capital Management Greenwich, Connecticut $178M AUM 118.43% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Mariner's IRWD Position: Q2 2026 in Review

Mariner reduced its Ironwood Pharmaceuticals (IRWD) stake by 19% in Q2 2026, selling an estimated $151K and leaving 168,472 shares worth $709K. The position accounts for ﹤0.01% of the portfolio, ranked #2217.

Mariner first reported a position in IRWD in Q1 2022 and has held it in 18 quarters since. The position peaked at $1.1M in Q1 2025. 212 funds tracked by Wall St. Rank hold IRWD as of Q2 2026.

  • Mariner held 168,472 shares of Ironwood Pharmaceuticals worth $709K as of Q2 2026.
  • Mariner sold 39,307 Ironwood Pharmaceuticals shares in Q2 2026, an estimated $151K.
  • Ironwood Pharmaceuticals made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2217 holding.
  • Mariner first reported a position in Ironwood Pharmaceuticals in Q1 2022 and has held it in 18 quarters since.
  • Mariner's Ironwood Pharmaceuticals position peaked at $1.1M in Q1 2025.
  • 212 funds tracked by Wall St. Rank held Ironwood Pharmaceuticals as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.