John Overdeck’s CoStar Group CSGP Stock Holding History

John Overdeck’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	$1.27M	Sell	44,700 -12,900	-22%	-$444K	﹤0.01%	3430
2026 Q1	$2.32M	Buy	+57,600	New	+$3M	﹤0.01%	2641
2025 Q4	–	Sell	-4,000	Closed	-$337K	–	4120
2025 Q3	$337K	Buy	+4,000	New	+$353K	﹤0.01%	3167
2022 Q1	–	Sell	-3,000	Closed	-$237K	–	3004
2021 Q4	$237K	Sell	3,000 -13,600	-82%	-$1.14M	﹤0.01%	3809
2021 Q3	$1.43M	Buy	+16,600	New	+$1.43M	﹤0.01%	2287
2021 Q2	–	Sell	-27,000	Closed	-$2.22M	–	4119
2021 Q1	$2.22M	Buy	27,000 +23,000	+575%	+$1.99M	0.01%	1621
2020 Q4	$370K	Sell	4,000 -6,000	-60%	-$526K	﹤0.01%	2717
2020 Q3	$849K	Buy	10,000 +4,000	+67%	+$319K	﹤0.01%	1870
2020 Q2	$426K	Buy	+6,000	New	+$388K	﹤0.01%	2113
2020 Q1	–	Sell	-11,000	Closed	-$658K	–	3222
2019 Q4	$658K	Hold	11,000	–	–	﹤0.01%	2574
2019 Q3	$653K	Buy	+11,000	New	+$658K	﹤0.01%	2341
2018 Q4	–	Sell	-5,000	Closed	-$210K	–	3062
2018 Q3	$210K	Buy	+5,000	New	+$214K	﹤0.01%	2988

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

John Overdeck's CSGP Position: Q2 2026 in Review

John Overdeck increased its CoStar Group (CSGP) stake by 265% in Q2 2026, buying an estimated $27.6M and bringing the position to 1,104,950 shares worth $31.3M. The position accounts for 0.02% of the portfolio, ranked #775.

John Overdeck first reported a position in CSGP in Q3 2013 and has held it in 25 quarters since. The position peaked at $68.6M in Q3 2019. 754 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

John Overdeck held 1,104,950 shares of CoStar Group worth $31.3M as of Q2 2026.
John Overdeck bought 801,946 CoStar Group shares in Q2 2026, an estimated $27.6M.
CoStar Group made up 0.02% of John Overdeck's portfolio in Q2 2026, its #775 holding.
John Overdeck first reported a position in CoStar Group in Q3 2013 and has held it in 25 quarters since.
John Overdeck's CoStar Group position peaked at $68.6M in Q3 2019.
754 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.