BLUEBIRD BIO INC

CUSIP: 09609G10 Class: COMM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

Note: Option positions (PUT/CALL) are excluded.

Q3 2015
Shares 31,200 Value ($000) $5,253 Avg Close — Range —
Q2 2015
Shares 31,200 Value ($000) $5,253 Avg Close — Range —