IronBridge Capital Management’s Biogen BIIB Stock Holding History

IronBridge Capital Management’s Portfolio BIIB Stock Details BIIB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q4	–	Sell	-1,790	Closed	-$522K	–	179
2015 Q3	$522K	Hold	1,790	–	–	0.02%	174
2015 Q2	$723K	Hold	1,790	–	–	0.02%	171
2015 Q1	$756K	Sell	1,790 -107,990	-98%	-$42.6M	0.02%	173
2014 Q4	$37.3M	Sell	109,780 -13,540	-11%	-$4.38M	1.04%	23
2014 Q3	$40.8M	Sell	123,320 -6,910	-5%	-$2.28M	1.08%	25
2014 Q2	$41.1M	Sell	130,230 -2,960	-2%	-$891K	1%	27
2014 Q1	$40.7M	Buy	+133,190	New	+$42.3M	0.89%	31

Other funds holding BIIB

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

BIT

BlackRock Institutional Trust San Francisco, California $675B AUM 16.07% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

BFA

BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

IronBridge Capital Management's BIIB Position: Q4 2015 in Review

IronBridge Capital Management sold out of Biogen (BIIB) in Q4 2015, closing a stake of 1,790 shares — an estimated $522K sold.

IronBridge Capital Management first reported a position in BIIB in Q1 2014 and held it in 7 quarters. The position peaked at $41.1M in Q2 2014. 969 funds tracked by Wall St. Rank hold BIIB as of Q4 2015.

IronBridge Capital Management reported no remaining Biogen position as of Q4 2015 after selling out during the quarter.
IronBridge Capital Management sold 1,790 Biogen shares in Q4 2015, an estimated $522K.
IronBridge Capital Management first reported a position in Biogen in Q1 2014 and held it in 7 quarters.
IronBridge Capital Management's Biogen position peaked at $41.1M in Q2 2014.
969 funds tracked by Wall St. Rank held Biogen as of Q4 2015.

Based on IronBridge Capital Management's 13F filing for Q4 2015, filed 8 Feb 2016.