BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

DELTEC ASSET MANAGEMENT LLC's Holding History (CIK: 0001269950)

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

Q4 2015

Shares 21,155 Value ($000) $6,481 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 28,505 Value ($000) $8,318 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 4,500 Value ($000) $1,818 Avg Close $401.33 Range $368.88 - $432.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	21,155	$6,481	$287.35	$254.00 - $311.65
Q3 2015	28,505	$8,318	$330.23	$265.00 - $412.24
Q2 2015	4,500	$1,818	$401.33	$368.88 - $432.88