Spark Investment Management LLC - IRONWOOD PHARMACEUTICALS INC ownership

IRONWOOD PHARMACEUTICALS INC's ticker is IRWD and the CUSIP is 46333X108. A total of 132 filers reported holding IRONWOOD PHARMACEUTICALS INC in Q3 2015. The put-call ratio across all filers is 1.51 and the average weighting 0.2%.

Quarter-by-quarter ownership
Spark Investment Management LLC ownership history of IRONWOOD PHARMACEUTICALS INC
ValueSharesWeighting
Q2 2017$2,252,000
-73.6%
119,300
-76.1%
0.14%
-74.2%
Q1 2017$8,516,000
+11.6%
499,2000.0%0.54%
-14.3%
Q4 2016$7,632,000
-15.4%
499,200
-12.1%
0.63%
-14.1%
Q3 2016$9,021,000
+99.4%
568,100
+64.1%
0.73%
+72.8%
Q2 2016$4,525,000
+109.2%
346,100
+75.0%
0.42%
+93.2%
Q1 2016$2,163,000
+68.6%
197,800
+78.7%
0.22%
+34.4%
Q4 2015$1,283,000
+154.1%
110,700
+127.8%
0.16%
+147.0%
Q3 2015$505,000
-79.9%
48,600
-76.7%
0.07%
-81.2%
Q2 2015$2,511,000208,4000.35%
Other shareholders
IRONWOOD PHARMACEUTICALS INC shareholders Q3 2015
NameSharesValueWeighting ↓
EcoR1 Capital, LLC 2,855,515$43,661,00013.90%
BLUE JAY CAPITAL MANAGEMENT, LLC 772,369$11,810,0007.13%
Rubric Capital Management LP 1,275,000$19,495,0006.70%
SECTOR GAMMA AS 1,972,678$30,162,0005.68%
BRIDGER MANAGEMENT, LLC 1,879,313$28,735,0002.00%
Asymmetry Capital Management, L.P. 57,363$877,0001.63%
Orbimed Advisors 7,241,300$110,719,0001.41%
Broderick Brian C 144,476$2,209,0000.96%
Granahan Investment Management 1,408,000$21,528,0000.74%
Spark Investment Management LLC 499,200$7,632,0000.63%
View complete list of IRONWOOD PHARMACEUTICALS INC shareholders