BIOGEN INC

CUSIP: 09062x103 Class: COM

WestEnd Advisors, LLC's Holding History (CIK: 0001351731)

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

Q2 2016
Shares 386,911 Value ($000) $93,562,818 Avg Close — Range —
Q1 2016
Shares 369,699 Value ($000) $96,240,044 Avg Close — Range —
Q4 2015
Shares 298,374 Value ($000) $91,406,874 Avg Close — Range —
Q3 2015
Shares 288,716 Value ($000) $84,250,216 Avg Close — Range —
Q2 2015
Shares 272,177 Value ($000) $109,943,177 Avg Close — Range —
Q1 2015
Shares 278,522 Value ($000) $117,603,129 Avg Close — Range —
Q4 2014
Shares 306,232 Value ($000) $103,950,452 Avg Close — Range —
Q3 2014
Shares 289,062 Value ($000) $95,624,600 Avg Close — Range —
Q2 2014
Shares 320,316 Value ($000) $100,998,837 Avg Close — Range —
Q1 2014
Shares 320,702 Value ($000) $98,093,120 Avg Close — Range —
Q4 2013
Shares 255,676 Value ($000) $71,479,339 Avg Close — Range —
Q3 2013
Shares 345,240 Value ($000) $83,119,982 Avg Close — Range —
Q2 2013
Shares 369,444 Value ($000) $79,504,349 Avg Close — Range —