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
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

AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
SCM
Sarissa Capital Management Greenwich, Connecticut $158M AUM 103.7% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Mariner's IRWD Position: Q1 2026 in Review

Mariner increased its Ironwood Pharmaceuticals (IRWD) stake by 82% in Q1 2026, buying an estimated $384K and bringing the position to 207,779 shares worth $729K. The position accounts for ﹤0.01% of the portfolio, ranked #2203.

Mariner first reported a position in IRWD in Q1 2022 and has held it in 17 quarters since. The position peaked at $1.1M in Q1 2025. 226 funds tracked by Wall St. Rank hold IRWD as of Q1 2026.

  • Mariner held 207,779 shares of Ironwood Pharmaceuticals worth $729K as of Q1 2026.
  • Mariner bought 93,660 Ironwood Pharmaceuticals shares in Q1 2026, an estimated $384K.
  • Ironwood Pharmaceuticals made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2203 holding.
  • Mariner first reported a position in Ironwood Pharmaceuticals in Q1 2022 and has held it in 17 quarters since.
  • Mariner's Ironwood Pharmaceuticals position peaked at $1.1M in Q1 2025.
  • 226 funds tracked by Wall St. Rank held Ironwood Pharmaceuticals as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.