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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 2022

Institutional positions in Costar Group, Inc. as of Sep 30, 2022. 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
634
+47 vs. Q2 2022
Shares held
402.2M
+22.1M (+5.8%) vs. Q2 2022
Total value
$28.0B
+$5.08B (+22.1%) vs. Q2 2022
New holders
105
241 more added
Sold out
58
199 more reduced

4 institutions that held it in Q2 2022 haven't filed for Q3 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2022: 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 2022: 634 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 2022: $28.0B
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 2022

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2022.

Institutions holding CSGP in Q3 2022
InstitutionSharesValue% of portfolioChange in sharesAction
BNP Paribas Arbitrage, SA270,653$18.9M0.05%+143,135+112.2%Added
Night Owl Capital Management, LLC279,200$19.4M8.10%+12,951+4.9%Added
Royal London Asset Management Ltd282,687$19.7M0.10%−15,318−5.1%Reduced
D. E. Shaw & Co., Inc.283,334$19.7M0.03%−247,575−46.6%Reduced
HSBC Holdings PLC281,278$19.8M0.04%+168,733+149.9%Added
Royal Bank of Canada285,480$19.9M0.01%+36,963+14.9%Added
Amundi272,682$20.3M0.01%+79,114+40.9%Added
Select Equity Group, L.P.295,331$20.6M0.09%−159,007−35.0%Reduced
Manufacturers Life Insurance Company, The298,836$20.8M0.01%+287,600+2,559.6%Added
Citigroup Inc301,242$21.0M0.03%+1,202+0.4%Added
Bank of Montreal300,646$21.6M0.02%+229,394+321.9%Added
Great West Life Assurance Co311,381$21.7M0.06%+44,872+16.8%Added
Ashford Capital Management Inc326,394$22.7M3.47%−4,866−1.5%Reduced
Brown Advisory Inc327,066$22.8M0.04%−13,988−4.1%Reduced
New York State Teachers Retirement System346,975$24.2M0.06%+346,975New
Eaton Vance Management348,466$24.3M0.04%+144,627+71.0%Added
Kornitzer Capital Management Inc367,631$25.6M0.55%−14,239−3.7%Reduced
Korea Investment CORP384,573$26.8M0.08%+136,682+55.1%Added
Barclays PLC384,965$26.8M0.03%+105,315+37.7%Added
Locust Wood Capital Advisers, LLC390,288$27.2M2.09%−75,364−16.2%Reduced
Truist Financial Corp396,418$27.6M0.05%−103,299−20.7%Reduced
Two Sigma Advisers, LP398,300$27.7M0.08%−814,600−67.2%Reduced
Fred Alger Management, LLC399,597$27.8M0.14%+314,496+369.6%Added
Point72 Asset Management, L.P.400,343$27.9M0.12%−228,857−36.4%Reduced
Adage Capital Partners GP, L.L.C.403,400$28.1M0.07%+403,400New
Wildcat Capital Management, LLC405,685$28.3M10.86%00.0%Unchanged
Allspring Global Investments Holdings, LLC407,317$28.4M0.05%+32,201+8.6%Added
Credit Suisse AG427,495$29.8M0.03%+16,480+4.0%Added
Jane Street Group, LLC444,971$31.0M0.06%+273,320+159.2%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.452,575$31.5M0.10%+136,349+43.1%Added
Sandhill Capital Partners LLC468,224$32.6M3.72%−15,926−3.3%Reduced
Ironvine Capital Partners, LLC476,900$33.2M4.46%+21,011+4.6%Added
Deutsche Bank AG477,924$33.3M0.02%−69,478−12.7%Reduced
State Board of Administration of Florida Retirement System489,731$34.1M0.09%−6,139−1.2%Reduced
National Pension Service483,506$34.2M0.07%−60,880−11.2%Reduced
Alliancebernstein L.P.499,025$34.8M0.02%+303,668+155.4%Added
Geneva Capital Management LLC502,119$35.0M0.81%−7,929−1.6%Reduced
JPMorgan Chase & Co507,218$35.3M0.01%+197,928+64.0%Added
Quantum Capital Management, LLC507,849$35.4M4.63%+54,163+11.9%Added
New York State Common Retirement Fund520,140$36.2M0.05%−21,817−4.0%Reduced
Connectus Wealth, LLC53,923$37.6M0.78%−485,148−90.0%Reduced
Bridgewater Associates, LP539,688$37.6M0.19%−53,504−9.0%Reduced
Stephens Investment Management Group LLC546,095$38.0M0.72%+49,667+10.0%Added
Balyasny Asset Management LLC559,371$39.0M0.15%+230,373+70.0%Added
Candlestick Capital Management LP561,085$39.1M1.82%+561,085New
Ycg, LLC567,552$39.5M4.70%+638+0.1%Added
Jennison Associates LLC591,365$41.2M0.04%+4,663+0.8%Added
APG Asset Management N.V.611,784$43.5M0.11%−39,352−6.0%Reduced
Ergoteles LLC633,928$44.2M1.55%+611,919+2,780.3%Added
Peregrine Capital Management LLC645,786$45.0M1.46%+39,889+6.6%Added
California State Teachers Retirement System656,378$45.7M0.08%−5,803−0.9%Reduced
Victory Capital Management Inc666,108$46.4M0.05%−162,293−19.6%Reduced
Russell Investments Group, Ltd.666,568$46.5M0.10%+526,389+375.5%Added
Rhumbline Advisers675,524$47.0M0.07%+287,319+74.0%Added
Westfield Capital Management Co LP748,123$52.1M0.41%+673,623+904.2%Added
Putnam Investments LLC754,461$52.5M0.10%+696,652+1,205.1%Added
Artisan Partners Limited Partnership768,069$53.5M0.09%+768,069New
Beck Mack & Oliver LLC782,061$54.5M1.76%+2,031+0.3%Added
TD Asset Management Inc773,777$54.7M0.07%+58,843+8.2%Added
SEI Investments Co789,644$55.0M0.12%−49,708−5.9%Reduced
American Capital Management Inc792,352$55.2M2.18%−836−0.1%Reduced
Rathbone Brothers plc829,000$57.7M0.71%00.0%Unchanged
Chicago Capital, LLC836,662$58.3M3.37%−1,136−0.1%Reduced
TimesSquare Capital Management, LLC843,090$58.7M0.82%+218,490+35.0%Added
CIBC Private Wealth Group, LLC869,328$60.5M0.16%+177,401+25.6%Added
Wells Fargo & Company884,949$61.6M0.02%+44,544+5.3%Added
Mitsubishi UFJ Trust & Banking Corp893,308$62.2M0.17%+747+0.1%Added
California Public Employees Retirement System898,081$62.6M0.06%+144,504+19.2%Added
STRS Ohio975,000$67.9M0.32%+65,000+7.1%Added
Raymond James & Associates976,342$68.0M0.07%+1,998+0.2%Added
Pictet Asset Management SA984,708$68.6M0.10%+20,673+2.1%Added
Dimensional Fund Advisors LP1,100,068$76.6M0.03%+116,316+11.8%Added
Nuveen Asset Management, LLC1,109,403$77.3M0.03%+34,411+3.2%Added
Ensign Peak Advisors, Inc1,116,297$77.8M0.19%−10,119−0.9%Reduced
Marshall Wace, LLP1,128,518$78.6M0.20%+196,037+21.0%Added
Sumitomo Mitsui Trust Holdings, Inc.1,142,997$79.6M0.07%+2,053+0.2%Added
RGM Capital, LLC1,146,048$79.8M5.16%00.0%Unchanged
Kayne Anderson Rudnick Investment Management LLC1,149,086$80.0M0.27%−19,402−1.7%Reduced
Baird Financial Group, Inc.1,171,355$81.6M0.24%+49,089+4.4%Added
UBS Asset Management Americas Inc1,198,133$83.4M0.05%+33,555+2.9%Added
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management1,247,700$86.9M5.11%−215,900−14.8%Reduced
FMR LLC1,253,099$87.3M0.01%−162,919−11.5%Reduced
Goldman Sachs Group Inc1,400,376$97.5M0.03%+248,009+21.5%Added
Ci Investments Inc.1,409,360$98.2M0.51%−34,735−2.4%Reduced
Envestnet Asset Management Inc1,428,906$99.5M0.06%+57,247+4.2%Added
Granahan Investment Management Inc1,512,227$105.3M3.44%−205,824−12.0%Reduced
Capital International Investors1,536,244$107.0M0.03%+1,218+0.1%Added
Prudential Financial Inc1,578,595$110.0M0.19%+1,008,010+176.7%Added
Swiss National Bank1,717,090$119.6M0.09%+4,000+0.2%Added
Morgan Stanley1,731,699$120.6M0.02%+307,032+21.6%Added
Neuberger Berman Group LLC1,850,954$129.0M0.13%−104,101−5.3%Reduced
Winslow Capital Management, LLC1,956,196$136.2M0.80%−2,013,025−50.7%Reduced
Harding Loevner LP2,151,857$149.9M0.98%−125,250−5.5%Reduced
Charles Schwab Investment Management Inc2,203,722$153.5M0.05%+791,098+56.0%Added
Bares Capital Management, Inc.2,255,303$157.1M6.12%−8,213−0.4%Reduced
Legal & General Group Plc2,309,813$160.9M0.06%+75,964+3.4%Added
Invesco Ltd.2,583,386$179.9M0.06%+1,912,547+285.1%Added
Riverbridge Partners LLC2,617,812$182.3M2.71%+320,308+13.9%Added
DF Dent & Co Inc2,700,325$188.1M2.91%−326,726−10.8%Reduced
Champlain Investment Partners, LLC2,757,305$192.0M1.31%−60,835−2.2%Reduced