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CSGP — COSTAR GROUP INC

Reported value held$10.54B
Funds holding (latest)59
SectorFinancials

Index member: S&P 500

Funds holding (Q2 2026)44
Institutional value$4.76B · 168.93M sh
New / Add / Cut / Exit1 / 17 / 24 / 3
Top-5 / Top-10 concentration53.2% / 72.1%
Institutional holdings change Reducing -9.3% (-17.39M sh)
Institutional value change Down -36.1%

As of Q2 2026, 44 SEC-registered investment managers reported holding CSGP (COSTAR GROUP INC) in their latest 13F filings, with a combined reported value of $4.76B across 168.93M shares. That is -9.3% by share count (-17.39M shares) versus the previous quarter, while reported value moved -36.1%. Ownership is concentrated: the five largest holders account for 53.2% of reported value and the top ten for 72.1%.

Compared with the prior quarter, 1 opened new positions, 17 added to existing stakes, 24 trimmed, 3 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

CSGP is a constituent of the S&P 500 and is classified in the Financials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 70.11M $4.71B 0.07% Hold
BlackRock Inc history Q2 2026 33.81M $957.61M 0.01% Hold
Baron Funds history Q2 2026 21.63M $612.47M 1.47% Add
Baillie Gifford & Co history Q2 2026 13.15M $372.53M 0.34% Reduce
Geode Capital Management history Q2 2026 12.17M $343.30M 0.02% Reduce
Janus Henderson Group history Q1 2026 7.72M $311.59M 0.15% Add
Farallon Capital Management history Q1 2024 2.59M $250.61M 1.13% Reduce
Polen Capital Management history Q2 2026 8.76M $248.06M 2.14% Reduce
AQR Capital Management history Q2 2026 8.45M $239.18M 0.08% Add
Third Point history Q4 2025 3.17M $212.81M 3.17% Add
Invesco Ltd history Q2 2026 6.81M $192.81M 0.02% Reduce
Norges Bank Investment Management history Q2 2026 5.95M $168.50M 0.02% Reduce
Morgan Stanley history Q2 2026 5.49M $155.36M 0.01% Add
Goldman Sachs Group history Q2 2026 5.13M $145.27M 0.01% Reduce
Capital Research Global Investors history Q2 2026 4.19M $118.79M 0.02% Reduce
Principal Global Investors history Q2 2026 3.79M $107.36M 0.05% Reduce
Northern Trust Corp history Q2 2026 3.45M $97.67M 0.01% Hold
Viking Global Investors history Q4 2025 1.44M $97.00M 0.26% Reduce
Amundi US history Q2 2026 3.14M $88.81M 0.02% Reduce
MFS Investment Management history Q2 2026 2.98M $84.51M 0.03% Add

View all 59 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 38.89M 38.12M 37.46M 35.04M 36.13M 33.97M 33.81M 33.81M
Baron Funds 18.64M 18.50M 18.85M 19.24M 19.25M 19.11M 18.97M 19.11M 19.20M 19.39M 19.34M 19.27M 18.79M 19.20M 19.03M 19.68M 19.26M 19.50M 16.31M 21.63M
Baillie Gifford & Co 12.54M 14.19M 13.41M 13.16M 12.93M 12.67M 12.34M 11.93M 11.64M 9.52M 9.25M 9.05M 8.80M 7.91M 8.44M 8.54M 8.24M 12.93M 13.61M 13.15M
Geode Capital Management 4.95M 5.40M 5.40M 6.32M 8.90M 9.31M 9.81M 10.90M 10.27M 10.45M 10.84M 11.07M 11.31M 11.48M 12.07M 12.36M 12.60M 12.18M 12.45M 12.17M
Polen Capital Management — — — — — — — — — — — — — 6.50M 6.60M 6.92M 6.38M 4.89M 12.57M 8.76M
AQR Capital Management 262.07K 258.24K 302.43K 198.00K 175.09K 166.43K 164.39K 196.35K 82.01K 33.69K 34.64K 28.82K 25.52K 28.47K 128.60K 364.86K 323.74K 369.35K 1.26M 8.45M
Invesco Ltd 364.54K 663.24K 647.34K 670.84K 2.58M 4.02M 2.31M 3.41M 3.68M 3.92M 3.06M 3.45M 3.75M 4.23M 4.31M 4.44M 4.54M 5.39M 7.14M 6.81M
Norges Bank Investment Management — — — — — 4.15M — — — 4.66M — 5.10M — 5.46M — 5.31M — 7.09M — 5.95M
Morgan Stanley 1.22M 1.18M 1.02M 1.42M 1.73M 2.20M 1.93M 1.94M 2.38M 2.86M 4.02M 3.56M 3.67M 4.34M 7.91M 7.41M 8.54M 5.29M 5.41M 5.49M
Goldman Sachs Group 1.73M 1.40M 1.35M 1.15M 1.40M 1.52M 1.43M 1.97M 2.37M 3.00M 3.09M 2.44M 2.59M 3.43M 3.75M 2.24M 2.20M 3.75M 9.25M 5.13M
Capital Research Global Investors — — — — — 617.44K 1.34M 1.34M 1.62M 2.41M 2.65M 2.65M 2.98M 3.41M 3.42M 3.93M 4.99M 5.57M 4.37M 4.19M
Principal Global Investors 15.62M 16.69M 18.74M 20.17M 20.61M 19.68M 19.28M 19.05M 19.81M 19.81M 19.59M 19.37M 19.39M 19.19M 19.01M 18.65M 18.62M 17.57M 17.70M 3.79M
Northern Trust Corp 3.03M 2.96M 2.94M 2.76M 3.94M 3.93M 3.86M 3.74M 3.84M 3.72M 3.54M 3.53M 3.30M 3.99M 4.03M 3.87M 3.75M 3.47M 3.43M 3.45M
Amundi US 484.47K 416.43K 204.59K 193.57K 272.68K 329.85K 870.85K 807.68K 399.15K 724.96K 801.89K 772.91K 2.16M 2.81M 3.40M 3.20M 3.14M 4.11M 3.28M 3.14M
MFS Investment Management 8.46M 8.89M — 9.97M 10.49M 11.13M 11.54M 11.37M 11.97M 11.83M 11.50M 11.38M 11.38M 7.09M 6.62M 6.59M 7.41M 3.16M 956.10K 2.98M
Charles Schwab Investment Management 1.27M 1.31M 1.36M 1.41M 2.20M 2.33M 2.35M 2.37M 2.39M 2.46M 2.54M 2.61M 2.68M 2.82M 3.03M 3.09M 2.66M 2.66M 2.87M 2.96M
Bank of America Corp 3.58M 3.54M 4.14M 4.02M 4.03M 4.22M 4.46M 3.66M 3.95M 4.02M 4.34M 4.77M 4.21M 3.57M 6.14M 5.13M 3.70M 3.50M 3.57M 2.74M
CPP Investments 206.52K 197.15K 18.79K 75.49K 49.49K 49.49K 49.49K 49.49K 49.49K 49.49K 49.49K 49.49K 49.49K 1.13M 467.13K 534.50K 634.33K 741.40K 2.01M 2.48M
Fidelity Management & Research (FMR) 1.28M 1.28M 1.03M 1.42M 1.25M 1.21M 724.14K 767.17K 1.41M 1.59M 1.10M 1.61M 1.60M 1.16M 1.64M 1.30M 1.58M 1.20M 2.83M 2.47M
UBS Group AG 360.47K 152.35K 327.00K 270.72K 180.61K 524.77K 466.20K 938.62K 897.15K 930.44K 952.68K 782.20K 1.06M 1.51M 4.74M 4.71M 4.61M 2.13M 1.33M 2.40M

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