Bank of Montreal
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Bank of Montreal’s Magnite MGNI Stock Holding History

Bank of Montreal’s Portfolio MGNI Stock Details MGNI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$14M Buy
+740,000
New +$10.6M ﹤0.01% 1047
2021
Q2 		– Sell
-680,000
Closed -$26.9M – 4431
2021
Q1 		$26.9M Hold
680,000
– – 0.02% 585
2020
Q4 		$17.4M Buy
+680,000
New +$10.3M 0.01% 761

Other funds holding MGNI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return

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

Bank of Montreal opened a new position in Magnite (MGNI) in Q2 2026: 533,757 shares worth $10.1M. The stake represents ﹤0.01% of the portfolio and ranks #1154 among its holdings. This is a return to the name: Bank of Montreal previously reported a position in MGNI as recently as Q4 2025.

Bank of Montreal first reported a position in MGNI in Q2 2014 and has held it in 35 quarters since. The position peaked at $49.7M in Q4 2015. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

  • Bank of Montreal held 533,757 shares of Magnite worth $10.1M as of Q2 2026.
  • Magnite was a new Bank of Montreal position in Q2 2026.
  • Magnite made up ﹤0.01% of Bank of Montreal's portfolio in Q2 2026, its #1154 holding.
  • Bank of Montreal first reported a position in Magnite in Q2 2014 and has held it in 35 quarters since.
  • Bank of Montreal's Magnite position peaked at $49.7M in Q4 2015.
  • 311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

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