Bank of Montreal
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Bank of Montreal’s Biogen BIIB Stock Holding History

Bank of Montreal’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
2019
Q4 		– Sell
-14,800
Closed -$3.45M – 4851
2019
Q3 		$3.45M Buy
+14,800
New +$3.45M ﹤0.01% 1363
2015
Q4 		– Sell
-20,000
Closed -$5.84M – 4222
2015
Q3 		$5.84M Buy
+20,000
New +$6.6M 0.01% 921

Other funds holding BIIB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Amundi
Amundi Paris, France $413B AUM 44.57% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return

Bank of Montreal's BIIB Position: Q2 2026 in Review

Bank of Montreal increased its Biogen (BIIB) stake by 34% in Q2 2026, buying an estimated $6.04M and bringing the position to 124,267 shares worth $26.8M. The position accounts for 0.01% of the portfolio, ranked #800.

Bank of Montreal first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $123M in Q4 2018. 746 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Bank of Montreal held 124,267 shares of Biogen worth $26.8M as of Q2 2026.
  • Bank of Montreal bought 31,558 Biogen shares in Q2 2026, an estimated $6.04M.
  • Biogen made up 0.01% of Bank of Montreal's portfolio in Q2 2026, its #800 holding.
  • Bank of Montreal first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
  • Bank of Montreal's Biogen position peaked at $123M in Q4 2018.
  • 746 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Bank of Montreal's 13F filing for Q2 2026, filed 12 Aug 2026.