VIA
BIIB icon

Virtus Investment Advisers’s Biogen BIIB Stock Holding History

Virtus Investment Advisers’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
2026
Q2 		$1.26M Buy
5,813
+965
+20% +$185K 0.29% 169
2026
Q1 		$889K Buy
4,848
+925
+24% +$170K 0.25% 153
2025
Q4 		$690K Buy
3,923
+564
+17% +$92.1K 0.19% 171
2025
Q3 		$471K Hold
3,359
– – 0.13% 210
2025
Q2 		$422K Buy
3,359
+1,048
+45% +$131K 0.14% 220
2025
Q1 		$316K Buy
+2,311
New +$330K 0.09% 237
2018
Q1 		– Sell
-906
Closed -$289K – 64
2017
Q4 		$289K Sell
906
-16
-2% -$5.13K 0.03% 355
2017
Q3 		$289K Sell
922
-148
-14% -$43.8K 0.03% 369
2017
Q2 		$290K Sell
1,070
-202
-16% -$53.4K 0.03% 384
2017
Q1 		$348K Buy
+1,272
New +$360K 0.03% 357
2016
Q4 		– Sell
-4,775
Closed -$1.5M – 473
2016
Q3 		$1.5M Buy
+4,775
New +$1.41M 0.1% 256

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Virtus Investment Advisers's BIIB Position: Q2 2026 in Review

Virtus Investment Advisers increased its Biogen (BIIB) stake by 20% in Q2 2026, buying an estimated $185K and bringing the position to 5,813 shares worth $1.26M. The position accounts for 0.29% of the portfolio, ranked #169.

Virtus Investment Advisers first reported a position in BIIB in Q3 2016 and has held it in 11 quarters since. The position peaked at $1.5M in Q3 2016. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Virtus Investment Advisers held 5,813 shares of Biogen worth $1.26M as of Q2 2026.
  • Virtus Investment Advisers bought 965 Biogen shares in Q2 2026, an estimated $185K.
  • Biogen made up 0.29% of Virtus Investment Advisers's portfolio in Q2 2026, its #169 holding.
  • Virtus Investment Advisers first reported a position in Biogen in Q3 2016 and has held it in 11 quarters since.
  • Virtus Investment Advisers's Biogen position peaked at $1.5M in Q3 2016.
  • 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Virtus Investment Advisers's 13F filing for Q2 2026, filed 11 Aug 2026.