BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

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

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

Q1 2022
Shares 21,286 Value ($000) $4,483 Avg Close $217.46 Range $192.67 - $249.00
Q4 2021
Shares 22,116 Value ($000) $5,306 Avg Close $257.12 Range $221.72 - $290.76
Q3 2021
Shares 22,938 Value ($000) $6,491 Avg Close $327.75 Range $282.64 - $372.12
Q2 2021
Shares 24,027 Value ($000) $8,320 Avg Close $302.94 Range $257.03 - $468.55
Q1 2021
Shares 56,517 Value ($000) $15,811 Avg Close $269.69 Range $238.40 - $296.38
Q4 2020
Shares 96,104 Value ($000) $23,533 Avg Close $259.08 Range $223.25 - $363.92
Q3 2020
Shares 90,171 Value ($000) $25,580 Avg Close $278.91 Range $261.87 - $312.00
Q2 2020
Shares 90,872 Value ($000) $24,314 Avg Close $300.59 Range $257.60 - $350.24
Q1 2020
Shares 83,763 Value ($000) $26,501 Avg Close $303.47 Range $262.25 - $374.99
Q4 2019
Shares 104,478 Value ($000) $31,002 Avg Close $277.46 Range $219.70 - $318.00
Q3 2019
Shares 77,285 Value ($000) $17,993 Avg Close $232.85 Range $215.78 - $246.99
Q2 2019
Shares 104,585 Value ($000) $24,459 Avg Close $230.90 Range $219.20 - $245.35
Q1 2019
Shares 103,169 Value ($000) $24,387 Avg Close $314.89 Range $216.12 - $344.00
Q4 2018
Shares 94,852 Value ($000) $28,543 Avg Close $319.14 Range $278.46 - $358.41
Q3 2018
Shares 98,390 Value ($000) $34,762 Avg Close $344.30 Range $288.13 - $388.67
Q2 2018
Shares 52,254 Value ($000) $15,166 Avg Close $281.15 Range $249.17 - $310.91
Q1 2018
Shares 66,702 Value ($000) $18,264 Avg Close $310.41 Range $259.76 - $370.57