BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

AXIOM INVESTORS LLC /DE's Holding History (CIK: 0001109147)

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

Q4 2018

Shares 55,672 Value ($000) $16,753 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 55,672 Value ($000) $19,669 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 55,745 Value ($000) $16,179 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 85,260 Value ($000) $23,346 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 85,430 Value ($000) $27,215 Avg Close $320.80 Range $301.81 - $348.84

Q3 2015

Shares 103,352 Value ($000) $30,159 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 101,276 Value ($000) $40,909 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 184,004 Value ($000) $77,694 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 114,200 Value ($000) $38,765 Avg Close $323.51 Range $290.85 - $361.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	55,672	$16,753	$319.14	$278.46 - $358.41
Q3 2018	55,672	$19,669	$344.30	$288.13 - $388.67
Q2 2018	55,745	$16,179	$281.15	$249.17 - $310.91
Q1 2018	85,260	$23,346	$310.41	$259.76 - $370.57
Q4 2017	85,430	$27,215	$320.80	$301.81 - $348.84
Q3 2015	103,352	$30,159	$330.23	$265.00 - $412.24
Q2 2015	101,276	$40,909	$401.33	$368.88 - $432.88
Q1 2015	184,004	$77,694	$394.14	$334.40 - $480.18
Q4 2014	114,200	$38,765	$323.51	$290.85 - $361.93