RIM
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RS Investment Management’s Biogen BIIB Stock Holding History

RS Investment 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
Q3 		– Sell
-29,507
Closed -$11.9M – 356
2015
Q2 		$11.9M Buy
29,507
+2,310
+8% +$927K 0.1% 238
2015
Q1 		$11.5M Buy
27,197
+25,979
+2,133% +$10.2M 0.1% 230
2014
Q4 		$413K Sell
1,218
-18,987
-94% -$6.14M ﹤0.01% 347
2014
Q3 		$6.68M Buy
20,205
+3,955
+24% +$1.3M 0.06% 270
2014
Q2 		$5.12M Sell
16,250
-1,421
-8% -$428K 0.04% 278
2014
Q1 		$5.41M Sell
17,671
-1,807
-9% -$574K 0.03% 265
2013
Q4 		$5.45M Buy
19,478
+1,005
+5% +$260K 0.03% 254
2013
Q3 		$4.45M Sell
18,473
-417
-2% -$93.3K 0.03% 250
2013
Q2 		$4.07M Buy
+18,890
New +$4.04M 0.03% 253

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return
BIT
BlackRock Institutional Trust San Francisco, California $675B AUM 16.07% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Wellington Management Group
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
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return