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Main Street Research’s Biogen BIIB Stock Holding History

Main Street Research’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
2020
Q2 		– Sell
-55,689
Closed -$17.6M – 98
2020
Q1 		$17.6M Sell
55,689
-1,017
-2% -$309K 4.32% 5
2019
Q4 		$16.8M Sell
56,706
-300
-0.5% -$83.2K 2.65% 10
2019
Q3 		$13.3M Buy
57,006
+50,656
+798% +$11.8M 2.49% 22
2019
Q2 		$1.49M Sell
6,350
-70
-1% -$16.2K 0.33% 35
2019
Q1 		$1.52M Buy
+6,420
New +$2.02M 0.48% 29
2018
Q4 		– Sell
-3,182
Closed -$1.12M – 83
2018
Q3 		$1.12M Sell
3,182
-108
-3% -$37.2K 0.16% 49
2018
Q2 		$955K Hold
3,290
– – 0.15% 51
2018
Q1 		$901K Buy
3,290
+86
+3% +$26.7K 0.14% 54
2017
Q4 		$1.02M Sell
3,204
-340
-10% -$109K 0.16% 58
2017
Q3 		$1.11M Sell
3,544
-352
-9% -$104K 0.18% 58
2017
Q2 		$1.06M Sell
3,896
-252
-6% -$66.6K 0.17% 67
2017
Q1 		$1.13M Sell
4,148
-145
-3% -$41K 0.2% 64
2016
Q4 		$1.22M Buy
4,293
+10
+0.2% +$2.96K 0.24% 62
2016
Q3 		$1.34M Sell
4,283
-510
-11% -$151K 0.26% 63
2016
Q2 		$1.16M Hold
4,793
– – 0.24% 63
2016
Q1 		$1.25M Sell
4,793
-60
-1% -$15.8K 0.32% 54
2015
Q4 		$1.49M Hold
4,853
– – 0.32% 67
2015
Q3 		$1.41M Sell
4,853
-65
-1% -$21.5K 0.33% 67
2015
Q2 		$1.99M Sell
4,918
-15
-0.3% -$6.02K 0.41% 73
2015
Q1 		$2.08M Sell
4,933
-305
-6% -$120K 0.45% 68
2014
Q4 		$1.78M Hold
5,238
– – 0.38% 73
2014
Q3 		$1.73M Buy
5,238
+40
+0.8% +$13.2K 0.39% 77
2014
Q2 		$1.64M Hold
5,198
– – 0.39% 75
2014
Q1 		$1.59M Hold
5,198
– – 0.39% 74
2013
Q4 		$1.45M Sell
5,198
-20
-0.4% -$5.17K 0.36% 77
2013
Q3 		$1.26M Sell
5,218
-720
-12% -$161K 0.34% 78
2013
Q2 		$1.28M Buy
+5,938
New +$1.27M 0.39% 76

Other funds holding BIIB

Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Main Street Research's BIIB Position: Q2 2020 in Review

Main Street Research sold out of Biogen (BIIB) in Q2 2020, closing a stake of 55,689 shares — an estimated $17.6M sold.

Main Street Research first reported a position in BIIB in Q2 2013 and held it in 27 quarters. The position peaked at $17.6M in Q1 2020. 1,060 funds tracked by Wall St. Rank hold BIIB as of Q2 2020.

  • Main Street Research reported no remaining Biogen position as of Q2 2020 after selling out during the quarter.
  • Main Street Research sold 55,689 Biogen shares in Q2 2020, an estimated $17.6M.
  • Main Street Research first reported a position in Biogen in Q2 2013 and held it in 27 quarters.
  • Main Street Research's Biogen position peaked at $17.6M in Q1 2020.
  • 1,060 funds tracked by Wall St. Rank held Biogen as of Q2 2020.

Based on Main Street Research's 13F filing for Q2 2020, filed 29 Jul 2020.