Ken Griffin Magnite, Inc. Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Magnite, Inc. stock. As of the latest transaction made, Citadel Advisors LLC holds 330,000 shares of MGNI stock, worth $4.67 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

330,000

Previous 835,102 60.48%

Holding current value

$4.67 Million

Previous $20.1 Million 64.32%

% of portfolio

0.0%

Previous 0.0%

21 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$21.75 - $26.52 $14.5 Million - $17.7 Million	-665,541 Reduced 79.7%	169,561 $3.69 Million
Q2 2025 Aug 14, 2025	BUY	$9.0 - $24.12 $2.18 Million - $5.84 Million	242,173 Added 40.84%	835,102 $20.1 Million
Q1 2025 May 15, 2025	BUY	$11.41 - $21.17 $3.23 Million - $5.98 Million	282,690 Added 91.12%	592,929 $6.77 Million
Q4 2024 Feb 14, 2025	SELL	$11.91 - $18.0 $4.67 Million - $7.06 Million	-392,269 Reduced 55.84%	310,239 $4.94 Million
Q3 2024 Nov 14, 2024	BUY	$12.37 - $15.84 $5.11 Million - $6.54 Million	413,049 Added 142.7%	702,508 $9.72 Million

Q2 2024 Aug 14, 2024	SELL	$8.46 - $13.87 $1.08 Million - $1.77 Million	-127,307 Reduced 30.55%	289,459 $3.85 Million
Q1 2024 May 15, 2024	BUY	$8.69 - $12.23 $315,507 - $444,034	36,307 Added 9.54%	416,766 $4.48 Million
Q4 2023 Feb 14, 2024	SELL	$6.51 - $9.84 $1.13 Million - $1.71 Million	-173,292 Reduced 31.29%	380,459 $3.55 Million
Q3 2023 Nov 14, 2023	BUY	$7.35 - $15.48 $1.94 Million - $4.08 Million	263,525 Added 90.8%	553,751 $4.18 Million
Q2 2023 Aug 14, 2023	SELL	$8.41 - $13.85 $4.83 Million - $7.96 Million	-574,635 Reduced 66.44%	290,226 $3.96 Million
Q1 2023 May 15, 2023	BUY	$8.4 - $13.76 $1.89 Million - $3.1 Million	225,010 Added 35.17%	864,861 $8.01 Million
Q4 2022 Feb 14, 2023	SELL	$5.78 - $12.66 $1.3 Million - $2.84 Million	-224,178 Reduced 25.95%	639,851 $6.78 Million
Q3 2022 Nov 14, 2022	SELL	$6.35 - $9.8 $3.86 Million - $5.96 Million	-608,372 Reduced 41.32%	864,029 $5.68 Million
Q2 2022 Aug 15, 2022	BUY	$8.88 - $14.22 $3.92 Million - $6.27 Million	441,022 Added 42.76%	1,472,401 $13.1 Million
Q1 2022 May 16, 2022	BUY	$10.53 - $17.83 $412,955 - $699,239	39,217 Added 3.95%	1,031,379 $13.6 Million
Q4 2021 Feb 14, 2022	SELL	$16.6 - $30.58 $4.82 Million - $8.89 Million	-290,568 Reduced 22.65%	992,162 $17.4 Million
Q3 2021 Nov 15, 2021	SELL	$24.3 - $34.68 $5.44 Million - $7.76 Million	-223,707 Reduced 14.85%	1,282,730 $35.9 Million
Q2 2021 Aug 16, 2021	BUY	$24.53 - $42.8 $19.1 Million - $33.3 Million	777,711 Added 106.72%	1,506,437 $51 Million
Q1 2021 May 17, 2021	BUY	$25.08 - $61.8 $10.8 Million - $26.7 Million	431,981 Added 145.57%	728,726 $30.3 Million
Q4 2020 Feb 16, 2021	SELL	$7.23 - $32.5 $664,711 - $2.99 Million	-91,938 Reduced 23.65%	296,745 $9.11 Million
Q3 2020 Nov 16, 2020	BUY	$5.67 - $7.88 $2.2 Million - $3.06 Million	388,683 New	388,683 $2.7 Million

Others Institutions Holding MGNI

# of Institutions

375

Shares Held

123M

Call Options Held

5.5M

Put Options Held

3.72M

View Full List

About MAGNITE, INC.

Ticker MGNI
Exchange NASDAQ
Sector Communication Services
Industry Advertising Agencies
Shares Outstandng 132,937,000
Market Cap $1.88B
Description
Magnite, Inc. operates an independent sell-side advertising platform in the United States and internationally. The company's platform offers applications and services for sellers of digital advertising inventory or publishers that own and operate CTV channels, applications, websites, and other digital media properties, to manage and monetize the...

More about MGNI

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