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Costar Group, Inc.

CSGP
Exchange
Nasdaq
Industry
Services-Business Services, NEC
SEC CIK
0001057352

In the last 90 days, Costar Group, Inc. insiders filed 1 open-market purchase and 2 sales; 760 institutions reported holding it in 13F filings for Q2 2026, worth $11.7B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.

13F holders, Q4 2023

Institutional positions in Costar Group, Inc. as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
737
+55 vs. Q3 2023
Shares held
394.1M
+2.25M (+0.6%) vs. Q3 2023
Total value
$34.4B
+$4.26B (+14.1%) vs. Q3 2023
New holders
105
283 more added
Sold out
50
261 more reduced

8 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSGP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2023: 737 institutions
Q1 2021: 593 institutionsQ2 2021: 607 institutionsQ3 2021: 594 institutionsQ4 2021: 633 institutionsQ1 2022: 589 institutionsQ2 2022: 591 institutionsQ3 2022: 634 institutionsQ4 2022: 704 institutionsQ1 2023: 692 institutionsQ2 2023: 714 institutionsQ3 2023: 690 institutionsQ4 2023: 737 institutionsQ1 2024: 767 institutionsQ2 2024: 767 institutionsQ3 2024: 773 institutionsQ4 2024: 805 institutionsQ1 2025: 858 institutionsQ2 2025: 873 institutionsQ3 2025: 905 institutionsQ4 2025: 847 institutionsQ1 2026: 797 institutionsQ2 2026: 760 institutions
Value heldQ4 2023: $34.4B
Q1 2021: $31.2BQ2 2021: $31.1BQ3 2021: $32.3BQ4 2021: $29.6BQ1 2022: $25.2BQ2 2022: $23.0BQ3 2022: $28.0BQ4 2022: $30.4BQ1 2023: $26.7BQ2 2023: $35.5BQ3 2023: $30.1BQ4 2023: $34.4BQ1 2024: $38.4BQ2 2024: $29.3BQ3 2024: $30.0BQ4 2024: $28.9BQ1 2025: $33.9BQ2 2025: $34.2BQ3 2025: $34.9BQ4 2025: $28.4BQ1 2026: $16.8BQ2 2026: $11.7B
Institutions holding CSGP and their total value by quarter
QuarterHoldersValue
Q2 2026760$11.7B
Q1 2026797$16.8B
Q4 2025847$28.4B
Q3 2025905$34.9B
Q2 2025873$34.2B
Q1 2025858$33.9B
Q4 2024805$28.9B
Q3 2024773$30.0B
Q2 2024767$29.3B
Q1 2024767$38.4B
Q4 2023737$34.4B
Q3 2023690$30.1B
Q2 2023714$35.5B
Q1 2023692$26.7B
Q4 2022704$30.4B
Q3 2022634$28.0B
Q2 2022591$23.0B
Q1 2022589$25.2B
Q4 2021633$29.6B
Q3 2021594$32.3B
Q2 2021607$31.1B
Q1 2021593$31.2B

Institutions, Q4 2023

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2023.

Institutions holding CSGP in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Gateway Investment Advisers LLC30,977$2.71M0.03%−103,859−77.0%Reduced
Banque Pictet & Cie SA29,999$2.62M0.03%−10.0%Reduced
SYSTM Wealth Solutions LLC29,407$2.57M0.36%+3,237+12.4%Added
Highland Capital Management, LLC28,477$2.49M0.15%−95−0.3%Reduced
DoubleLine ETF Adviser LP28,079$2.45M0.71%+28,079New
Hartford Investment Management Co27,546$2.41M0.09%−875−3.1%Reduced
Squarepoint Ops LLC27,091$2.37M0.01%−69,287−71.9%Reduced
Aurora Investment Managers, LLC.27,012$2.36M1.80%+585+2.2%Added
Nordea Investment Management AB26,760$2.34M0.00%+605+2.3%Added
HST Ventures, LLC26,635$2.33M0.82%+26,635New
AXA S.A.26,405$2.31M0.01%+3,405+14.8%Added
Commonwealth Equity Services, LLC26,238$2.29M0.00%+898+3.5%Added
Principal Securities, Inc.26,203$2.29M0.09%+26,203New
Malaga Cove Capital, LLC26,068$2.28M0.96%+2,376+10.0%Added
Securian Asset Management, Inc25,813$2.26M0.06%−3,420−11.7%Reduced
Brinker Capital Investments, LLC26,939$2.23M0.03%+6,649+32.8%Added
Orion Portfolio Solutions, LLC26,939$2.23M0.03%+6,649+32.8%Added
Bell Bank24,988$2.18M0.21%−2,253−8.3%Reduced
M&T Bank Corp24,660$2.15M0.01%−1,181−4.6%Reduced
JustInvest LLC24,614$2.15M0.06%+6,208+33.7%Added
Aperture Investors, LLC24,522$2.14M0.38%+24,522New
Sumitomo Life Insurance Co23,871$2.09M0.06%−943−3.8%Reduced
AXS Investments LLC23,563$2.06M0.49%+14,902+172.1%Added
B. Metzler seel. Sohn & Co. AG23,467$2.05M0.03%+4,867+26.2%Added
Boomfish Wealth Group, LLC23,276$2.03M1.47%+23,276New
TD Private Client Wealth LLC22,784$1.99M0.07%−6,164−21.3%Reduced
LMCG Investments, LLC22,755$1.99M0.12%−1,170−4.9%Reduced
Crossmark Global Holdings, Inc.22,528$1.97M0.04%+83+0.4%Added
Creative Planning22,426$1.96M0.00%+4,365+24.2%Added
Keybank National Association21,541$1.88M0.01%+382+1.8%Added
New Mexico Educational Retirement Board21,300$1.86M0.07%00.0%Unchanged
Cresset Asset Management, LLC21,142$1.85M0.01%+1,982+10.3%Added
Voya Financial Advisors, Inc.20,774$1.83M0.22%+364+1.8%Added
First Bank & Trust20,838$1.82M0.44%+2,904+16.2%Added
D.A. Davidson & Co.20,764$1.81M0.02%+218+1.1%Added
Clark Capital Management Group, Inc.20,574$1.80M0.01%+74+0.4%Added
SG Americas Securities, LLC20,333$1.78M0.02%+2,947+17.0%Added
Next Century Growth Investors LLC20,134$1.76M0.17%−14,276−41.5%Reduced
Quest Investment Management LLC20,058$1.75M0.22%−141,315−87.6%Reduced
ExodusPoint Capital Management, LP20,039$1.75M0.02%−34,893−63.5%Reduced
Exchange Traded Concepts, LLC19,596$1.71M0.05%+6,143+45.7%Added
Institute for Wealth Management, LLC.19,401$1.70M0.28%+735+3.9%Added
NEOS Investment Management LLC18,924$1.65M0.16%+1,113+6.2%Added
Stephens Inc18,843$1.65M0.03%−13,681−42.1%Reduced
Teacher Retirement System of Texas18,782$1.64M0.01%−12,874−40.7%Reduced
American Assets Capital Advisers, LLC18,669$1.63M0.46%−6,000−24.3%Reduced
Markel Group Inc.SuperinvestorMarkel Group18,600$1.63M0.02%00.0%Unchanged
Bessemer Group Inc18,561$1.62M0.00%+135+0.7%Added
Redmond Asset Management, LLC18,501$1.62M0.52%−850−4.4%Reduced
Dai-Ichi Life Insurance Company, Ltd18,425$1.61M0.03%−386−2.1%Reduced
Sapient Capital LLC18,226$1.59M0.04%+18,226New
Procyon Private Wealth Partners, LLC18,106$1.58M0.13%+1,843+11.3%Added
Siemens Fonds Invest GmbH18,047$1.58M0.13%+1,048+6.2%Added
Cobblestone Capital Advisors LLC17,877$1.56M0.10%−138,732−88.6%Reduced
Norinchukin Bank, The17,732$1.55M0.04%−2,193−11.0%Reduced
Metis Global Partners, LLC17,683$1.55M0.06%−1,147−6.1%Reduced
Atlantic Union Bankshares Corp17,606$1.54M0.14%+2,536+16.8%Added
Alps Advisors Inc17,605$1.54M0.01%−1,513−7.9%Reduced
Harbor Advisors LLC17,060$1.49M0.29%+7,000+69.6%Added
Prudential PLC17,027$1.49M0.02%−39−0.2%Reduced
Metropolitan Life Insurance Co16,621$1.45M0.07%−273−1.6%Reduced
Ameritas Investment Partners, Inc.16,382$1.43M0.05%+204+1.3%Added
Qsemble Capital Management, LP16,360$1.43M0.36%+16,360New
Patton Fund Management, Inc.16,264$1.42M0.32%−529−3.2%Reduced
Ostrum Asset Management15,998$1.40M0.12%+1,599+11.1%Added
Redwood Investments, LLC15,984$1.40M0.36%−1,708−9.7%Reduced
Kampmann Melissa S.15,760$1.38M1.18%+1,225+8.4%Added
Conestoga Capital Advisors, LLC15,610$1.36M0.02%−220−1.4%Reduced
Alberta Investment Management Corp15,575$1.36M0.01%+6,675+75.0%Added
QRG Capital Management, Inc.14,997$1.31M0.02%+600+4.2%Added
Parallel Advisors, LLC14,958$1.31M0.04%+3,470+30.2%Added
Candriam Luxembourg S.C.A.14,770$1.29M0.01%−1,019−6.5%Reduced
EagleClaw Capital Managment, LLC14,700$1.28M0.27%00.0%Unchanged
Employees Retirement System of Texas14,634$1.28M0.01%+14,634New
Gilbert & Cook, Inc.14,571$1.27M0.18%+1,824+14.3%Added
Kentucky Retirement Systems Insurance Trust Fund14,548$1.27M0.09%−619−4.1%Reduced
Quantinno Capital Management LP14,378$1.26M0.04%−349−2.4%Reduced
Verition Fund Management LLC14,153$1.24M0.01%+14,153New
Bokf, NA14,089$1.23M0.02%+2,030+16.8%Added
Brown Brothers Harriman & Co13,904$1.22M0.01%+95+0.7%Added
RMR Wealth Builders13,888$1.21M0.17%00.0%Unchanged
Raymond James Financial Services Advisors, Inc.13,640$1.19M0.00%+20+0.1%Added
APG Asset Management N.V.15,029$1.19M0.00%−401−2.6%Reduced
Chicago Partners Investment Group LLC14,001$1.17M0.05%−1,239−8.1%Reduced
WoodTrust Financial Corp13,400$1.17M0.20%00.0%Unchanged
Chicago Trust Co NA13,345$1.17M0.26%00.0%Unchanged
Walleye Trading LLC13,099$1.14M0.02%+13,099New
Emerald Advisers, LLC12,986$1.13M0.05%−240−1.8%Reduced
Krilogy Financial LLC12,955$1.13M0.10%−1,367−9.5%Reduced
Northwestern Mutual Investment Management Company, LLC12,926$1.13M0.03%+38+0.3%Added
Monumental Financial Group Inc.12,890$1.13M0.67%+326+2.6%Added
Jump Financial, LLC12,768$1.12M0.04%+2,159+20.4%Added
Sequoia Financial Advisors, LLC12,519$1.09M0.01%+7,373+143.3%Added
United Services Automobile Association12,302$1.08M0.02%+701+6.0%Added
IVC Wealth Advisors LLC12,254$1.07M0.67%−122−1.0%Reduced
FIL Ltd12,199$1.07M0.00%+811+7.1%Added
Benjamin F. Edwards & Company, Inc.12,189$1.06M0.02%+11,373+1,393.8%Added
SlateStone Wealth, LLC12,174$1.06M0.14%+282+2.4%Added
Toroso Investments, LLC12,097$1.06M0.03%+639+5.6%Added
Banco Bilbao Vizcaya Argentaria, S.A.12,079$1.06M0.01%+401+3.4%Added