Group One Trading’s CoStar Group CSGP Stock Holding History

Group One Trading’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 Q2	$109K	Buy	+3,849	New	+$132K	﹤0.01%	4783
2026 Q1	–	Sell	-19,737	Closed	-$1.03M	–	7822
2025 Q4	$1.33M	Buy	19,737 +18,676	+1,760%	+$1.32M	﹤0.01%	2646
2025 Q3	$89.5K	Buy	+1,061	New	+$93.8K	﹤0.01%	5445
2025 Q2	–	Sell	-3,264	Closed	-$254K	–	8018
2025 Q1	$259K	Sell	3,264 -3,622	-53%	-$276K	﹤0.01%	3752
2024 Q4	$493K	Buy	+6,886	New	+$520K	﹤0.01%	3187
2022 Q1	–	Sell	-4,263	Closed	-$283K	–	8116
2021 Q4	$337K	Buy	+4,263	New	+$358K	﹤0.01%	4553
2021 Q2	–	Sell	-5,810	Closed	-$502K	–	8206
2021 Q1	$478K	Buy	5,810 +3,810	+191%	+$329K	﹤0.01%	4087
2020 Q4	$185K	Buy	+2,000	New	+$175K	﹤0.01%	4104

Other funds holding CSGP

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

ACM

AKRE Capital Management Middleburg, Virginia $5.12B AUM 19.08% 1-Year Est. Return

Polen Capital Management Boca Raton, Florida $11.6B AUM 8.03% 1-Year Est. Return

Group One Trading's CSGP Position: Q2 2026 in Review

Group One Trading opened a new position in CoStar Group (CSGP) in Q2 2026: 3,849 shares worth $109K. The stake represents ﹤0.01% of the portfolio and ranks #4783 among its holdings. This is a return to the name: Group One Trading previously reported a position in CSGP as recently as Q4 2025.

Group One Trading first reported a position in CSGP in Q4 2020 and has held it in 8 quarters since. The position peaked at $1.33M in Q4 2025. 758 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

Group One Trading held 3,849 shares of CoStar Group worth $109K as of Q2 2026.
CoStar Group was a new Group One Trading position in Q2 2026.
CoStar Group made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #4783 holding.
Group One Trading first reported a position in CoStar Group in Q4 2020 and has held it in 8 quarters since.
Group One Trading's CoStar Group position peaked at $1.33M in Q4 2025.
758 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Group One Trading's 13F filing for Q2 2026, filed 14 Aug 2026.