Canada Pension Plan Investment Board’s Magnite MGNI Stock Holding History

Canada Pension Plan Investment Board’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 Q1	$547K	Buy	46,052 +27,600	+150%	+$370K	﹤0.01%	1209
2025 Q4	$299K	Buy	18,452 +15,652	+559%	+$260K	﹤0.01%	1517
2025 Q3	$61K	Buy	+2,800	New	+$66.1K	﹤0.01%	1237
2023 Q1	–	Sell	-5,386	Closed	-$57K	–	1154
2022 Q4	$57K	Hold	5,386	–	–	﹤0.01%	1066
2022 Q3	$35K	Hold	5,386	–	–	﹤0.01%	1136
2022 Q2	$48K	Sell	5,386 -520,000	-99%	-$5.57M	﹤0.01%	1181
2022 Q1	$6.94M	Buy	+525,386	New	+$7.08M	0.01%	554
2020 Q1	–	Sell	-164,200	Closed	-$1.34M	–	1408
2019 Q4	$1.34M	Buy	+164,200	New	+$1.35M	﹤0.01%	962
2019 Q2	–	Sell	-5,840	Closed	-$36K	–	1386
2019 Q1	$36K	Buy	+5,840	New	+$30.1K	﹤0.01%	1335

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 $95.5B AUM 28.4% 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

Canada Pension Plan Investment Board's MGNI Position: Q1 2026 in Review

Canada Pension Plan Investment Board increased its Magnite (MGNI) stake by 150% in Q1 2026, buying an estimated $370K and bringing the position to 46,052 shares worth $547K. The position accounts for ﹤0.01% of the portfolio, ranked #1209.

Canada Pension Plan Investment Board first reported a position in MGNI in Q1 2019 and has held it in 9 quarters since. The position peaked at $6.94M in Q1 2022. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Canada Pension Plan Investment Board held 46,052 shares of Magnite worth $547K as of Q1 2026.
Canada Pension Plan Investment Board bought 27,600 Magnite shares in Q1 2026, an estimated $370K.
Magnite made up ﹤0.01% of Canada Pension Plan Investment Board's portfolio in Q1 2026, its #1209 holding.
Canada Pension Plan Investment Board first reported a position in Magnite in Q1 2019 and has held it in 9 quarters since.
Canada Pension Plan Investment Board's Magnite position peaked at $6.94M in Q1 2022.
296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Canada Pension Plan Investment Board's 13F filing for Q1 2026, filed 15 May 2026.