MAGNITE, INC. - COMMON STOCK (MGNI)

Historical Holders from Q1 2019 to Q3 2025

Symbol: MGNI on Nasdaq
Type / Class: Equity / COMMON STOCK
Shares outstanding: 142,542,451
All holders as of 30 Sep 2025: Q3 2025
Total 13F shares, excl. options: 137,968,564
Holdings value: $3,003,283,239
% of all portfolios: 0.013%
Number of holders: 308
Number of buys: 146
Number of sells: -164
Average buys %: +0%
Average sells %: -0.01%

Reported Shares, Excluding Options vs Price

Reported Value, Excluding Options

Total Investors

Significant Owners of MAGNITE, INC. - COMMON STOCK (MGNI)

Filer	Ownership	Change %	Holdings Value	Net Change	Nb Shares	Change %	Reporting Name	Report Period
VANGUARD GROUP INC	10.29%		$307,011,816		14,654,432		The Vanguard Group	30 Sep 2025
FMR LLC	5.7%	-54.2%	$115,617,607	-$129,484,064	8,124,919	-52.8%	FMR LLC	28 Nov 2025
Capital Research Global Investors	4.9%	-45.6%	$152,086,713	-$129,312,412	6,982,861	-46%	Capital Research Global Investors	30 Sep 2025

Institutional Holders of MAGNITE, INC. - COMMON STOCK (MGNI)

Period	Reported Shares, Excl. Options	Value, Excl. Options	Change	Puts Notional Value	Calls Notional Value	Price	Investors
2025 Q3	137,968,564	$3,003,283,239	-$207,588,276	$81,245,676	$110,211,908	$21.78	308
2025 Q2	146,964,373	$3,543,069,968	+$406,190,715	$89,858,504	$95,867,600	$24.12	285
2025 Q1	132,644,878	$1,513,348,970	+$97,506,469	$46,765,630	$33,637,562	$11.41	290
2024 Q4	123,449,236	$1,965,951,862	+$42,368,020	$70,474,739	$59,755,573	$15.92	283
2024 Q3	119,561,299	$1,654,115,115	+$216,068,704	$45,955,251	$41,485,182	$13.85	279
2024 Q2	104,326,333	$1,386,459,925	+$39,957,238	$33,359,229	$26,727,606	$13.29	266
2024 Q1	102,110,845	$1,097,564,621	-$5,361,702	$26,175,175	$16,305,600	$10.75	230
2023 Q4	102,653,022	$958,824,603	-$4,019,427	$24,463,328	$9,312,569	$9.34	215
2023 Q3	103,476,989	$780,247,255	-$17,837,826	$21,423,433	$14,318,289	$7.54	208
2023 Q2	101,048,317	$1,380,031,436	+$74,884,448	$42,018,795	$23,951,670	$13.65	217
2023 Q1	96,353,092	$892,115,344	+$22,211,875	$34,808,958	$16,764,206	$9.26	217
2022 Q4	93,373,687	$988,829,597	-$97,935,020	$46,563,220	$12,552,125	$10.59	228
2022 Q3	103,432,133	$679,628,120	+$93,907,627	$23,732,000	$5,692,987	$6.57	201
2022 Q2	87,980,237	$781,403,356	-$17,395,213	$32,762,000	$10,016,712	$8.88	214
2022 Q1	88,698,180	$1,171,861,875	-$35,248,615	$41,878,323	$15,265,765	$13.21	215
2021 Q4	89,542,528	$1,566,754,035	-$140,798,799	$72,126,750	$39,041,250	$17.5	238
2021 Q3	90,069,072	$2,521,283,357	+$118,150,307	$135,158,400	$52,436,800	$28	270
2021 Q2	85,375,930	$2,889,381,654	-$89,507,112	$279,121,808	$109,912,824	$33.84	264
2021 Q1	86,041,634	$3,579,979,338	+$418,396,545	$358,849,000	$246,413,000	$41.61	271
2020 Q4	76,786,392	$2,357,551,419	+$83,965,902	$116,326,000	$160,715,000	$30.71	235
2020 Q3	83,209,025	$577,796,330	+$477,632,041	$7,072,000	$8,011,000	$6.94	168
2020 Q2	14,428,175	$96,233,000	+$96,233,000			$6.67	10
2020 Q1	203	$7,000				$34.48	1
2019 Q4	203	$7,000				$34.48	1
2019 Q3	203	$7,000				$34.48	1
2019 Q2	203	$7,000				$34.48	1
2019 Q1	203	$7,000				$34.48	1