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
2023 Q1	–	Sell	-100,000	Closed	-$1.1M	–	4037
2022 Q4	$1.1M	Hold	100,000	–	–	﹤0.01%	2119
2022 Q3	$661	Hold	100,000	–	–	﹤0.01%	2415
2022 Q2	$1.05K	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 $5.72T AUM 30.48% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

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

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Bank of Montreal's MGNI Position: Q1 2026 in Review

Bank of Montreal sold out of Magnite (MGNI) in Q1 2026, closing a stake of 276,273 shares — an estimated $4.48M sold.

Bank of Montreal first reported a position in MGNI in Q2 2014 and held it in 34 quarters. The position peaked at $49.7M in Q4 2015. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Bank of Montreal reported no remaining Magnite position as of Q1 2026 after selling out during the quarter.
Bank of Montreal sold 276,273 Magnite shares in Q1 2026, an estimated $4.48M.
Bank of Montreal first reported a position in Magnite in Q2 2014 and held it in 34 quarters.
Bank of Montreal's Magnite position peaked at $49.7M in Q4 2015.
296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Bank of Montreal's 13F filing for Q1 2026, filed 13 May 2026.