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	$2.56M	Buy	+135,000	New	+$1.93M	﹤0.01%	1636
2023 Q1	–	Sell	-100,000	Closed	-$1.1M	–	4037
2022 Q4	$1.1M	Hold	100,000	–	–	﹤0.01%	2119
2022 Q3	$661K	Hold	100,000	–	–	﹤0.01%	2415
2022 Q2	$1.05M	Hold	100,000	–	–	﹤0.01%	2266
2022 Q1	$1.4M	Buy	+100,000	New	+$1.35M	﹤0.01%	2133
2021 Q2	–	Sell	-160,000	Closed	-$6.33M	–	4433
2021 Q1	$6.33M	Hold	160,000	–	–	﹤0.01%	1233
2020 Q4	$4.09M	Buy	+160,000	New	+$2.42M	﹤0.01%	1501

Other funds holding MGNI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return

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.