BIOGEN IDEC INC

CUSIP: 09062X10 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2015
Shares 289,253 Value ($000) $88,613 Avg Close — Range —
Q3 2015
Shares 302,910 Value ($000) $122,357 Avg Close — Range —
Q2 2015
Shares 302,910 Value ($000) $122,357 Avg Close — Range —
Q1 2015
Shares 2,100 Value ($000) $887 Avg Close — Range —
Q3 2014
Shares 332,814 Value ($000) $110,098 Avg Close — Range —
Q2 2014
Shares 251,901 Value ($000) $79,427 Avg Close — Range —
Q1 2014
Shares 670,109 Value ($000) $204,966 Avg Close — Range —
Q4 2013
Shares 691,554 Value ($000) $193,462 Avg Close — Range —
Q3 2013
Shares 684,173 Value ($000) $164,721 Avg Close — Range —
Q2 2013
Shares 617,769 Value ($000) $132,944 Avg Close — Range —