Oberweis Asset Management’s Magnite MGNI Stock Holding History

Oberweis Asset Management’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	735,000 +87,400	+13%	+$1.25M	0.29%	116
2026 Q1	$7.69M	Buy	647,600 +11,800	+2%	+$158K	0.23%	129
2025 Q4	$10.3M	Buy	635,800 +121,800	+24%	+$2.02M	0.38%	101
2025 Q3	$11.2M	Hold	514,000	–	–	0.43%	89
2025 Q2	$12.4M	Buy	514,000 +308,300	+150%	+$4.54M	0.54%	73
2025 Q1	$2.35M	Hold	205,700	–	–	0.12%	164
2024 Q4	$3.27M	Buy	205,700 +5,700	+3%	+$83.6K	0.15%	160
2024 Q3	$2.77M	Hold	200,000	–	–	0.14%	175
2024 Q2	$2.66M	Buy	+200,000	New	+$2.19M	0.16%	161
2023 Q3	–	Sell	-340,700	Closed	-$4.65M	–	204
2023 Q2	$4.65M	Buy	+340,700	New	+$3.79M	0.57%	57
2021 Q2	–	Sell	-34,967	Closed	-$1.46M	–	179
2021 Q1	$1.46M	Sell	34,967 -240,890	-87%	-$10.4M	0.3%	47
2020 Q4	$8.47M	Buy	275,857 +1,350	+0.5%	+$20.4K	2.23%	7
2020 Q3	$1.91M	Sell	274,507 -107,830	-28%	-$721K	0.64%	19
2020 Q2	$2.55M	Buy	382,337 +49,837	+15%	+$311K	1%	17
2020 Q1	$1.84M	Buy	332,500 +35,730	+12%	+$328K	1.02%	18
2019 Q4	$2.42M	Buy	296,770 +225,970	+319%	+$1.86M	0.81%	19
2019 Q3	$617K	Buy	+70,800	New	+$621K	0.14%	131
2016 Q3	–	Sell	-352,670	Closed	-$4.81M	–	158
2016 Q2	$4.81M	Sell	352,670 -78,560	-18%	-$1.26M	1.43%	26
2016 Q1	$7.88M	Sell	431,230 -208,840	-33%	-$3.2M	2.28%	9
2015 Q4	$10.5M	Buy	640,070 +28,870	+5%	+$447K	2.95%	8
2015 Q3	$8.88M	Buy	611,200 +43,790	+8%	+$668K	2.59%	7
2015 Q2	$8.49M	Buy	567,410 +284,580	+101%	+$4.9M	2.25%	14
2015 Q1	$5.07M	Buy	282,830 +165,730	+142%	+$2.79M	1.42%	30
2014 Q4	$1.89M	Buy	+117,100	New	+$1.51M	0.56%	41

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

Oberweis Asset Management's MGNI Position: Q2 2026 in Review

Oberweis Asset Management increased its Magnite (MGNI) stake by 13% in Q2 2026, buying an estimated $1.25M and bringing the position to 735,000 shares worth $14M. The position accounts for 0.29% of the portfolio, ranked #116.

Oberweis Asset Management first reported a position in MGNI in Q4 2014 and has held it in 24 quarters since. 311 funds tracked by Wall St. Rank hold MGNI as of Q2 2026.

Oberweis Asset Management held 735,000 shares of Magnite worth $14M as of Q2 2026.
Oberweis Asset Management bought 87,400 Magnite shares in Q2 2026, an estimated $1.25M.
Magnite made up 0.29% of Oberweis Asset Management's portfolio in Q2 2026, its #116 holding.
Oberweis Asset Management first reported a position in Magnite in Q4 2014 and has held it in 24 quarters since.
311 funds tracked by Wall St. Rank held Magnite as of Q2 2026.

Based on Oberweis Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.