BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

Twin Tree Management, LP's Holding History (CIK: 0001535588)

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

Q2 2019
Shares 9,637 Value ($000) $1,226 Avg Close — Range —
Q1 2019
Shares 1,057 Value ($000) $166 Avg Close — Range —
Q4 2018
Shares 151 Value ($000) $15 Avg Close — Range —
Q3 2018
Shares 611 Value ($000) $89 Avg Close — Range —
Q2 2018
Shares 11,052 Value ($000) $1,735 Avg Close — Range —
Q1 2018
Shares 7,262 Value ($000) $1,240 Avg Close — Range —
Q4 2017
Shares 1,210 Value ($000) $216 Avg Close — Range —