ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q2 2021
Shares 34,871 Value ($000) $6,406 Avg Close — Range —
Q1 2021
Shares 36,576 Value ($000) $5,593 Avg Close — Range —
Q4 2020
Shares 76,000 Value ($000) $11,875 Avg Close — Range —
Q3 2020
Shares 206,512 Value ($000) $23,632 Avg Close — Range —
Q2 2020
Shares 109,838 Value ($000) $12,329 Avg Close — Range —
Q1 2020
Shares 61,840 Value ($000) $5,552 Avg Close — Range —
Q4 2019
Shares 55,798 Value ($000) $6,035 Avg Close — Range —
Q3 2019
Shares 59,839 Value ($000) $5,860 Avg Close — Range —
Q2 2019
Shares 50,656 Value ($000) $6,635 Avg Close — Range —
Q1 2019
Shares 49,118 Value ($000) $6,640 Avg Close — Range —
Q4 2018
Shares 44,503 Value ($000) $4,333 Avg Close — Range —
Q2 2018
Shares 48,383 Value ($000) $6,007 Avg Close — Range —
Q1 2018
Shares 51,257 Value ($000) $5,713 Avg Close — Range —