The first Biogen trade was made in Q4 2003.
Since then Mario Gabelli bought shares fifteen more times and sold shares on 30 occasions. The investor completely sold their stake between Q2 2016 and Q1 2018.
Avg closing price
Price range
Sold -1.65 Thousand shares
Q1 2018
Avg closing price
$310.41
Price range
$260.13
-
$367.91
Sold 1.5% shares (-25 shares)
Q4 2017
Avg closing price
$320.80
Price range
$307.64
-
$344.58
Sold 4.3% shares (-75 shares)
Q3 2017
Avg closing price
$296.11
Price range
$271.76
-
$329.69
Sold 1.2% shares (-22 shares)
Q2 2017
Avg closing price
$264.42
Price range
$246.54
-
$286.89
Sold 5.3% shares (-100 shares)
Q1 2017
Avg closing price
$275.09
Price range
$251.52
-
$297.85
Sold 1.3% shares (-25 shares)
Q4 2016
Avg closing price
$272.86
Price range
$251.75
-
$298.61
Sold 60.5% shares (-2.9 Thousand shares)
Q3 2016
Avg closing price
$272.63
Price range
$222.79
-
$303.87
Sold 0.3% shares (-13 shares)
Q2 2016
Avg closing price
$242.59
Price range
$206.74
-
$267.16
Increased shares by 0.1% (+5 shares)
Q1 2016
Avg closing price
$243.15
Price range
$225.62
-
$273.11
Increased shares by 0.2% (+8 shares)
Q4 2015
Avg closing price
$264.50
Price range
$235.68
-
$285.05
Sold 2.7% shares (-135 shares)
Q2 2015
Avg closing price
$369.42
Price range
$344.20
-
$396.70
Sold 0.1% shares (-3 shares)
Q1 2015
Avg closing price
$362.80
Price range
$308.04
-
$438.14
Increased shares by 6.5% (+300 shares)
Q4 2014
Avg closing price
$297.80
Price range
$275.32
-
$332.00
Increased shares by 11.0% (+460 shares)
Q3 2014
Avg closing price
$303.25
Price range
$275.50
-
$318.77
Increased shares by 16.5% (+590 shares)
Q2 2014
Avg closing price
$277.05
Price range
$252.22
-
$294.68
Sold 3.4% shares (-125 shares)
Q1 2014
Avg closing price
$292.20
Price range
$251.77
-
$323.96
Increased shares by 12.1% (+400 shares)
Q4 2013
Avg closing price
$238.13
Price range
$206.05
-
$272.36
Increased shares by 81.9% (+1.49 Thousand shares)
Q3 2013