Avenir Corporation’s Magnite MGNI Stock Holding History

Avenir Corporation’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	$317K	Sell	16,715 -1,000	-6%	-$14.3K	0.04%	65
2026 Q1	$210K	Buy	+17,715	New	+$237K	0.03%	70
2025 Q1	–	Sell	-35,000	Closed	-$557K	–	71
2024 Q4	$557K	Hold	35,000	–	–	0.06%	46
2024 Q3	$485K	Hold	35,000	–	–	0.05%	50
2024 Q2	$465K	Hold	35,000	–	–	0.05%	49
2024 Q1	$376K	Hold	35,000	–	–	0.03%	53
2023 Q4	$327K	Hold	35,000	–	–	0.03%	54
2023 Q3	$264K	Sell	35,000 -4,270	-11%	-$46K	0.02%	53
2023 Q2	$536K	Hold	39,270	–	–	0.05%	44
2023 Q1	$364K	Buy	39,270 +4,270	+12%	+$45.5K	0.03%	51
2022 Q4	$371K	Buy	35,000 +3,000	+9%	+$27.4K	0.04%	49
2022 Q3	$210K	Buy	32,000 +16,000	+100%	+$129K	0.02%	58
2022 Q2	$142K	Buy	16,000 +4,000	+33%	+$42.9K	0.01%	62
2022 Q1	$159K	Buy	+12,000	New	+$162K	0.01%	67

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

Avenir Corporation's MGNI Position: Q2 2026 in Review

Avenir Corporation reduced its Magnite (MGNI) stake by 5.6% in Q2 2026, selling an estimated $14.3K and leaving 16,715 shares worth $317K. The position accounts for 0.04% of the portfolio, ranked #65.

Avenir Corporation first reported a position in MGNI in Q1 2022 and has held it in 14 quarters since. The position peaked at $557K in Q4 2024. 310 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

Avenir Corporation held 16,715 shares of Magnite worth $317K as of Q2 2026.
Avenir Corporation sold 1,000 Magnite shares in Q2 2026, an estimated $14.3K.
Magnite made up 0.04% of Avenir Corporation's portfolio in Q2 2026, its #65 holding.
Avenir Corporation first reported a position in Magnite in Q1 2022 and has held it in 14 quarters since.
Avenir Corporation's Magnite position peaked at $557K in Q4 2024.
310 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Avenir Corporation's 13F filing for Q2 2026, filed 13 Aug 2026.