BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

TCW GROUP INC's Holding History (CIK: 0000850401)

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

Q4 2025
Shares 2,226 Value ($000) $392 Avg Close $163.37 Range $138.00 - $185.17
Q4 2016
Shares 21,850 Value ($000) $6,196 Avg Close $296.43 Range $268.00 - $329.83
Q3 2016
Shares 19,897 Value ($000) $6,228 Avg Close $296.18 Range $240.07 - $333.65
Q2 2016
Shares 21,297 Value ($000) $5,150 Avg Close $263.54 Range $223.02 - $292.69
Q1 2016
Shares 19,804 Value ($000) $5,155 Avg Close $264.15 Range $242.07 - $301.02
Q4 2015
Shares 20,004 Value ($000) $6,128 Avg Close $287.35 Range $254.00 - $311.65
Q3 2015
Shares 19,350 Value ($000) $5,647 Avg Close $330.23 Range $265.00 - $412.24
Q2 2015
Shares 20,000 Value ($000) $8,079 Avg Close $401.33 Range $368.88 - $432.88
Q1 2015
Shares 70,259 Value ($000) $29,666 Avg Close $394.14 Range $334.40 - $480.18
Q4 2014
Shares 68,250 Value ($000) $23,167 Avg Close $323.51 Range $290.85 - $361.93
Q3 2014
Shares 117,700 Value ($000) $38,936 Avg Close $329.72 Range $298.31 - $349.00
Q2 2014
Shares 120,150 Value ($000) $37,884 Avg Close $300.97 Range $272.02 - $322.25
Q1 2014
Shares 118,800 Value ($000) $36,337 Avg Close $317.43 Range $270.62 - $358.89
Q4 2013
Shares 119,600 Value ($000) $33,449 Avg Close $258.65 Range $221.07 - $298.82
Q3 2013
Shares 120,150 Value ($000) $28,927 Avg Close $223.81 Range $203.55 - $248.95
Q2 2013
Shares 119,118 Value ($000) $25,634 Avg Close $213.68 Range $191.80 - $242.64