Magnetar Financial’s CoStar Group CSGP Stock Holding History

Magnetar Financial’s Portfolio CSGP Stock Details CSGP Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$400K	Buy	+9,789	New	+$510K	﹤0.01%	685
2025 Q4	–	Sell	-9,878	Closed	-$833K	–	981
2025 Q3	$833K	Buy	+9,878	New	+$873K	0.01%	494
2024 Q3	–	Sell	-61,404	Closed	-$4.55M	–	562
2024 Q2	$4.55M	Buy	+61,404	New	+$5.2M	0.09%	132
2024 Q1	–	Sell	-9,660	Closed	-$844K	–	402
2023 Q4	$844K	Buy	+9,660	New	+$782K	0.02%	269
2023 Q2	–	Sell	-47,748	Closed	-$3.29M	–	517
2023 Q1	$3.29M	Buy	47,748 +15,598	+49%	+$1.15M	0.06%	216
2022 Q4	$2.48M	Buy	+32,150	New	+$2.51M	0.04%	374
2022 Q1	–	Sell	-23,047	Closed	-$1.82M	–	1376
2021 Q4	$1.82M	Buy	+23,047	New	+$1.93M	0.02%	696
2021 Q3	–	Sell	-11,604	Closed	-$961	–	1346
2021 Q2	$961	Sell	11,604 -32,026	-73%	-$2.77M	0.01%	739
2021 Q1	$3.59M	Buy	+43,630	New	+$3.77M	0.03%	435
2017 Q4	–	Sell	-152,510	Closed	-$4.09M	–	736
2017 Q3	$4.09M	Buy	+152,510	New	+$4.23M	0.07%	103

Other funds holding CSGP

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return

BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

Polen Capital Management Boca Raton, Florida $14.5B AUM 5.7% 1-Year Est. Return

Magnetar Financial's CSGP Position: Q1 2026 in Review

Magnetar Financial opened a new position in CoStar Group (CSGP) in Q1 2026: 9,789 shares worth $400K. The stake represents ﹤0.01% of the portfolio and ranks #685 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in CSGP as recently as Q3 2025.

Magnetar Financial first reported a position in CSGP in Q3 2017 and has held it in 10 quarters since. The position peaked at $4.55M in Q2 2024. 792 funds tracked by Wall St. Rank hold CSGP as of Q1 2026.

Magnetar Financial held 9,789 shares of CoStar Group worth $400K as of Q1 2026.
CoStar Group was a new Magnetar Financial position in Q1 2026.
CoStar Group made up ﹤0.01% of Magnetar Financial's portfolio in Q1 2026, its #685 holding.
Magnetar Financial first reported a position in CoStar Group in Q3 2017 and has held it in 10 quarters since.
Magnetar Financial's CoStar Group position peaked at $4.55M in Q2 2024.
792 funds tracked by Wall St. Rank held CoStar Group as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.