GABELLI & Co INVESTMENT ADVISERS, INC. - TESARO INC ownership

TESARO INC's ticker is TSRO and the CUSIP is 881569107. A total of 226 filers reported holding TESARO INC in Q4 2018. The put-call ratio across all filers is 0.46 and the average weighting 0.9%.

Quarter-by-quarter ownership
GABELLI & Co INVESTMENT ADVISERS, INC. ownership history of TESARO INC
ValueSharesWeighting
Q4 2018$19,238,000
+4535.7%
259,100
+9496.3%
2.72%
+5683.0%
Q1 2017$415,0002,7000.05%
Other shareholders
TESARO INC shareholders Q4 2018
NameSharesValueWeighting ↓
INTERWEST VENTURE MANAGEMENT CO 2,021,738$115,522,00048.67%
NEA Management Company, LLC 10,420,555$595,431,00026.49%
ORACLE INVESTMENT MANAGEMENT INC 844,718$48,267,00011.70%
Camber Capital Management LP 1,725,000$98,567,0004.84%
BB BIOTECH AG 1,629,743$93,124,0002.57%
Iguana Healthcare Management, LLC 45,000$2,571,0001.69%
Cormorant Asset Management, LP 350,000$19,999,0001.49%
SECTORAL ASSET MANAGEMENT INC 225,260$12,871,0001.41%
Rock Springs Capital Management LP 573,000$32,741,0001.40%
Eversept Partners, LP 51,523$2,944,0241.37%
View complete list of TESARO INC shareholders