Spears Abacus Advisors LLC - BLUEBIRD BIO INC ownership

BLUEBIRD BIO INC's ticker is BLUE and the CUSIP is 09609G100. A total of 272 filers reported holding BLUEBIRD BIO INC in Q4 2020. The put-call ratio across all filers is 1.17 and the average weighting 0.1%.

Quarter-by-quarter ownership
Spears Abacus Advisors LLC ownership history of BLUEBIRD BIO INC
ValueSharesWeighting
Q4 2020$202,000
-20.5%
4,673
-0.8%
0.02%
-29.2%
Q3 2020$254,000
-11.8%
4,7130.0%0.02%
-20.0%
Q2 2020$288,0004,7130.03%
Other shareholders
BLUEBIRD BIO INC shareholders Q4 2020
NameSharesValueWeighting ↓
TANG CAPITAL MANAGEMENT LLC 1,550,000$7,518,0001.50%
Birchview Capital, LP 84,000$407,0000.29%
PDT Partners, LLC 519,485$2,520,0000.22%
OCCUDO QUANTITATIVE STRATEGIES LP 320,922$1,556,0000.13%
Virtus ETF Advisers LLC 40,607$197,0000.09%
Baker Brothers Advisors 2,499,715$12,124,0000.07%
Green Alpha Advisors, LLC 14,660$71,0000.05%
Quinn Opportunity Partners LLC 140,824$683,0000.03%
Rafferty Asset Management, LLC 979,122$4,749,0000.03%
Inspire Investing, LLC 48,724$236,0000.03%
View complete list of BLUEBIRD BIO INC shareholders