ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

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

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

Q4 2020
Shares 36,182 Value ($000) $5,653 Avg Close — Range —
Q3 2020
Shares 19,908 Value ($000) $2,278 Avg Close — Range —
Q2 2020
Shares 58,658 Value ($000) $6,584 Avg Close — Range —
Q1 2020
Shares 169,697 Value ($000) $15,237 Avg Close — Range —
Q4 2019
Shares 15,612 Value ($000) $1,688 Avg Close — Range —
Q1 2019
Shares 3,605 Value ($000) $487 Avg Close — Range —
Q4 2018
Shares 62,230 Value ($000) $6,059 Avg Close — Range —
Q3 2018
Shares 8,325 Value ($000) $1,157 Avg Close — Range —
Q2 2018
Shares 12,720 Value ($000) $1,579 Avg Close — Range —
Q4 2017
Shares 78,195 Value ($000) $9,351 Avg Close — Range —
Q3 2017
Shares 22,622 Value ($000) $3,174 Avg Close — Range —
Q1 2017
Shares 2,129 Value ($000) $258 Avg Close — Range —
Q2 2016
Shares 24,119 Value ($000) $2,816 Avg Close — Range —
Q4 2015
Shares 6,951 Value ($000) $1,326 Avg Close — Range —
Q3 2015
Shares 3,501 Value ($000) $548 Avg Close — Range —
Q1 2015
Shares 6,281 Value ($000) $1,088 Avg Close — Range —
Q4 2014
Shares 5,375 Value ($000) $995 Avg Close — Range —
Q3 2014
Shares 2,734 Value ($000) $453 Avg Close — Range —
Q2 2014
Shares 7,645 Value ($000) $1,195 Avg Close — Range —
Q4 2013
Shares 2,123 Value ($000) $282 Avg Close — Range —