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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, Q3 2021

Institutional positions in Costar Group, Inc. as of Sep 30, 2021. 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
594
−8 vs. Q2 2021
Shares held
375.4M
+407.8K (+0.1%) vs. Q2 2021
Total value
$32.3B
+$1.24B (+4.0%) vs. Q2 2021
New holders
66
239 more added
Sold out
74
199 more reduced

5 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 holdersQ3 2021: 594 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 heldQ3 2021: $32.3B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2021.

Institutions holding CSGP in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
British Columbia Investment Management Corp72,931$6.28M0.04%+210.0%Added
Utah Retirement Systems70,880$6.10M0.08%−3,700−5.0%Reduced
BNP Paribas Arbitrage, SA70,097$6.03M0.01%−122,018−63.5%Reduced
Skandinaviska Enskilda Banken AB (publ)69,189$5.95M0.03%−1,251−1.8%Reduced
Foster Victor Wealth Advisors, LLC68,659$5.91M0.95%+7,282+11.9%Added
Zurcher Kantonalbank (Zurich Cantonalbank)68,198$5.87M0.03%−2,582−3.6%Reduced
Jag Capital Management, LLC67,205$5.78M0.45%+255+0.4%Added
LPL Financial LLC65,813$5.66M0.01%+5,074+8.4%Added
Claar Advisors LLC62,950$5.42M1.61%+1,200+1.9%Added
Shaker Investments LLC62,900$5.41M2.39%+270+0.4%Added
Wolverine Trading, LLC61,780$5.28M0.11%+8,877+16.8%Added
ProShare Advisors LLC59,422$5.11M0.01%+562+1.0%Added
Commerce Bank59,208$5.10M0.04%−532−0.9%Reduced
Janney Montgomery Scott LLC57,056$4.91M0.02%+4,573+8.7%Added
Bank of Montreal56,897$4.90M0.00%−152,395−72.8%Reduced
MML Investors Services, LLC56,638$4.87M0.04%+8,166+16.8%Added
Banque Pictet & Cie SA55,200$4.75M0.05%00.0%Unchanged
Azzad Asset Management Inc55,020$4.74M0.70%+9,632+21.2%Added
Formula Growth Ltd55,000$4.73M0.69%00.0%Unchanged
Loews Corp55,000$4.73M0.04%+55,000New
Public Employees Retirement Association of Colorado53,910$4.64M0.02%00.0%Unchanged
Nisa Investment Advisors, LLC52,850$4.55M0.03%00.0%Unchanged
Reliant Investment Management, LLC51,190$4.41M2.19%−2,240−4.2%Reduced
IFM Investors Pty Ltd50,980$4.39M0.09%+300+0.6%Added
B. Metzler seel. Sohn & Co. Holding AG50,054$4.31M0.06%+6,324+14.5%Added
CWM Advisors, LLC49,102$4.23M0.53%+44,062+874.2%Added
Davenport & Co LLC48,639$4.19M0.03%+41,679+598.8%Added
Quest Investment Management LLC48,228$4.15M0.38%−8,697−15.3%Reduced
Cambridge Investment Research Advisors, Inc.47,481$4.09M0.02%+1,696+3.7%Added
Leonteq Securities AG46,154$3.97M0.21%+40,694+745.3%Added
Allianz Asset Management GmbH45,924$3.95M0.00%+3,284+7.7%Added
Nicholas Investment Partners, LP45,483$3.91M0.29%+12,923+39.7%Added
Regions Financial Corp44,264$3.81M0.03%+344+0.8%Added
Marks Group Wealth Management, Inc43,049$3.72M0.50%+1,507+3.6%Added
DekaBank Deutsche Girozentrale42,842$3.62M0.01%+5,816+15.7%Added
BTC Capital Management, Inc.42,153$3.62M0.41%+7,988+23.4%Added
Zweig-DiMenna Associates LLC41,668$3.59M0.25%00.0%Unchanged
SG Americas Securities, LLC41,308$3.56M0.02%−106,436−72.0%Reduced
Taikang Asset Management (Hong Kong) Co Ltd41,010$3.53M0.72%00.0%Unchanged
Tredje AP-fonden40,000$3.44M0.07%+40,000New
Handelsbanken Fonder AB39,870$3.43M0.02%00.0%Unchanged
Hexavest Inc.39,791$3.42M0.21%−12,139−23.4%Reduced
Profund Advisors LLC38,857$3.34M0.11%+24,969+179.8%Added
Clearbridge Investments, LLC38,375$3.30M0.00%+6,455+20.2%Added
Papp L Roy & Associates38,330$3.30M0.42%00.0%Unchanged
Federation des caisses Desjardins du Quebec37,885$3.26M0.03%+5,575+17.3%Added
Susquehanna Fundamental Investments, LLC36,956$3.18M0.06%+36,956New
Stephens Inc36,238$3.12M0.05%+750+2.1%Added
Mackenzie Financial Corp35,680$3.07M0.00%+7,414+26.2%Added
Xponance, Inc.35,562$3.06M0.06%−1,359−3.7%Reduced
FDx Advisors, Inc.35,334$3.04M0.10%+6,533+22.7%Added
Next Century Growth Investors LLC34,410$2.96M0.26%00.0%Unchanged
Dai-Ichi Life Insurance Company, Ltd34,330$2.95M0.04%+30,000+692.8%Added
Blue Zone Wealth Advisors, LLC34,253$2.95M1.02%+34,253New
Schonfeld Strategic Advisors LLC34,203$2.94M0.03%−54,406−61.4%Reduced
GPM Growth Investors, Inc.33,647$2.90M1.53%+33,647New
Mirabella Financial Services LLP33,570$2.89M0.38%+28,905+619.6%Added
Cannon Global Investment Management, LLC33,500$2.88M4.32%+21,500+179.2%Added
HighTower Advisors, LLC32,858$2.84M0.01%−3,172−8.8%Reduced
Standard Life Aberdeen plc32,346$2.78M0.01%−1,447−4.3%Reduced
Barbara Oil Co.32,000$2.75M1.29%00.0%Unchanged
Park Avenue Securities LLC31,999$2.75M0.06%+5,481+20.7%Added
Prudential Financial Inc30,529$2.73M0.00%−82,370−73.0%Reduced
Carderock Capital Management Inc31,172$2.68M0.76%+302+1.0%Added
Corient Capital Partners, LLC31,069$2.67M0.20%+7,475+31.7%Added
Highland Capital Management, LLC30,979$2.67M0.16%+30,979New
Vestmark Advisory Solutions, Inc.30,689$2.64M0.18%+2,060+7.2%Added
Quadrature Capital Ltd30,368$2.61M0.09%−70,200−69.8%Reduced
Atria Investments LLC30,252$2.60M0.05%+8,232+37.4%Added
Townsend & Associates, Inc29,685$2.57M1.27%+5,548+23.0%Added
Maryland State Retirement & Pension System29,852$2.56M0.07%−601−2.0%Reduced
Cubist Systematic Strategies, LLC29,739$2.56M0.03%−170,461−85.1%Reduced
Cetera Investment Advisers29,662$2.55M0.04%+1,590+5.7%Added
AXA S.A.29,641$2.55M0.01%−4,999−14.4%Reduced
Quantitative Investment Management, LLC29,210$2.51M0.23%+29,210New
HawsGoodwin Investment Management LLC28,889$2.49M0.75%−71−0.2%Reduced
Westpac Banking Corp28,770$2.48M0.03%00.0%Unchanged
Aurora Investment Managers, LLC.28,200$2.43M2.47%−450−1.6%Reduced
EFG Asset Management (Americas) Corp.28,190$2.43M0.43%−5,785−17.0%Reduced
Elo Mutual Pension Insurance Co27,690$2.38M0.08%00.0%Unchanged
Intrinsic Edge Capital Management LLC27,480$2.37M0.16%00.0%Unchanged
Amalgamated Bank26,923$2.32M0.02%−3,797−12.4%Reduced
Fifth Third Bancorp26,430$2.27M0.01%−1,658−5.9%Reduced
TBH Global Asset Management, LLC26,409$2.27M0.53%−921−3.4%Reduced
TD Private Client Wealth LLC26,396$2.27M0.10%+38+0.1%Added
Bell Bank26,387$2.27M0.28%+1,377+5.5%Added
Quantbot Technologies LP26,157$2.25M0.16%−7,488−22.3%Reduced
Schroder Investment Management Group25,165$2.17M0.00%+2,455+10.8%Added
M&T Bank Corp24,265$2.09M0.01%−155−0.6%Reduced
Voya Financial Advisors, Inc.23,269$1.99M0.24%+2,487+12.0%Added
Tributary Capital Management, LLC22,700$1.95M0.15%−5,800−20.4%Reduced
Metropolitan Life Insurance Co22,133$1.90M0.03%−747−3.3%Reduced
Fortis Capital Management LLC22,000$1.89M1.10%−2,000−8.3%Reduced
George Kaiser Family Foundation21,033$1.81M0.30%+13,793+190.5%Added
Malaga Cove Capital, LLC20,987$1.81M0.75%+2,747+15.1%Added
Candriam Luxembourg S.C.A.20,830$1.79M0.01%−1,880−8.3%Reduced
Redwood Investments, LLC20,575$1.77M0.15%−775−3.6%Reduced
Brinker Capital Investments, LLC21,137$1.77M0.03%−30.0%Reduced
Nordea Investment Management AB20,560$1.76M0.00%00.0%Unchanged
Chartwell Investment Partners, LLC20,430$1.76M0.05%00.0%Unchanged