Millennium Management
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Millennium Management’s Ironwood Pharmaceuticals IRWD Stock Holding History

Millennium Management’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
2023
Q4 		– Sell
-150,100
Closed -$1.45M – 6297
2023
Q3 		$1.45M Buy
+150,100
New +$1.47M ﹤0.01% 3879

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

Millennium Management's IRWD Position: Q1 2026 in Review

Millennium Management reduced its Ironwood Pharmaceuticals (IRWD) stake by 18% in Q1 2026, selling an estimated $425K and leaving 457,114 shares worth $1.6M. The position accounts for ﹤0.01% of the portfolio, ranked #4060.

Millennium Management first reported a position in IRWD in Q2 2013 and has held it in 50 quarters since. The position peaked at $65.4M in Q1 2014. 226 funds tracked by Wall St. Rank hold IRWD as of Q1 2026.

  • Millennium Management held 457,114 shares of Ironwood Pharmaceuticals worth $1.6M as of Q1 2026.
  • Millennium Management sold 103,599 Ironwood Pharmaceuticals shares in Q1 2026, an estimated $425K.
  • Ironwood Pharmaceuticals made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #4060 holding.
  • Millennium Management first reported a position in Ironwood Pharmaceuticals in Q2 2013 and has held it in 50 quarters since.
  • Millennium Management's Ironwood Pharmaceuticals position peaked at $65.4M in Q1 2014.
  • 226 funds tracked by Wall St. Rank held Ironwood Pharmaceuticals as of Q1 2026.

Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.