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Costar Group, Inc.

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

No open-market purchases or sales by Costar Group, Inc. insiders were filed in the last 90 days; 764 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 2021

Institutional positions in Costar Group, Inc. as of Dec 31, 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
633
+48 vs. Q3 2021
Shares held
375.1M
−165.5K (0.0%) vs. Q3 2021
Total value
$29.6B
−$2.64B (−8.2%) vs. Q3 2021
New holders
113
229 more added
Sold out
65
214 more reduced

9 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2021: 633 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: 768 institutionsQ3 2024: 775 institutionsQ4 2024: 808 institutionsQ1 2025: 861 institutionsQ2 2025: 876 institutionsQ3 2025: 909 institutionsQ4 2025: 851 institutionsQ1 2026: 801 institutionsQ2 2026: 764 institutions
Value heldQ4 2021: $29.6B
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 2026764$11.7B
Q1 2026801$16.8B
Q4 2025851$28.4B
Q3 2025909$34.9B
Q2 2025876$34.2B
Q1 2025861$33.9B
Q4 2024808$28.9B
Q3 2024775$30.0B
Q2 2024768$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 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2021.

Institutions holding CSGP in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Vanguard Group Inc34,552,931$2.73B0.06%−2,5530.0%Reduced
Price T Rowe Associates Inc27,653,214$2.19B0.20%−13,746,298−33.2%Reduced
BlackRock Inc.23,945,281$1.89B0.05%−547,386−2.2%Reduced
Bamco Inc18,498,791$1.46B3.11%−140,948−0.8%Reduced
Principal Financial Group Inc16,686,729$1.32B0.79%+1,071,607+6.9%Added
Baillie Gifford & Co14,192,597$1.12B0.62%+1,655,617+13.2%Added
Janus Henderson Group PLC12,105,968$956.7M0.40%+446,780+3.8%Added
Sands Capital Management, LLC10,279,665$812.4M1.51%−257,997−2.4%Reduced
Akre Capital Management LLCSuperinvestorAkre Capital Management9,764,350$771.7M4.48%+1,3500.0%Added
Franklin Resources Inc9,601,598$758.8M0.27%−820,617−7.9%Reduced
Massachusetts Financial Services Co8,891,336$702.7M0.19%+428,342+5.1%Added
State Street Corp8,367,573$661.3M0.03%+68,018+0.8%Added
Macquarie Group Ltd7,107,332$561.7M0.47%+2,382,444+50.4%Added
Vulcan Value Partners, LLC7,080,407$559.6M2.86%−38,137−0.5%Reduced
Parnassus Investments6,017,875$475.6M0.91%+5,630,875+1,455.0%Added
Third Point LLCSuperinvestorThird Point5,687,819$449.5M3.14%00.0%Unchanged
Findlay Park Partners LLP5,565,995$439.9M2.94%+1,195,881+27.4%Added
Geode Capital Management, LLC5,401,624$426.3M0.05%+447,790+9.0%Added
Veritas Asset Management LLP5,133,270$405.7M2.28%+10,400+0.2%Added
Winslow Capital Management, LLC4,538,992$358.7M1.33%−117,402−2.5%Reduced
Ownership Capital B.V.4,481,624$354.2M3.83%+840,352+23.1%Added
Ameriprise Financial Inc4,456,315$352.1M0.10%+1,555,454+53.6%Added
Norges Bank3,771,165$298.0M0.06%+137,151+3.8%Added
Bank of America Corp3,539,122$279.7M0.03%−44,127−1.2%Reduced
Bares Capital Management, Inc.3,101,856$245.1M4.90%−80,110−2.5%Reduced
Northern Trust Corp2,959,765$233.9M0.04%−74,051−2.4%Reduced
Voya Investment Management LLC2,886,645$228.1M0.44%−337,151−10.5%Reduced
Federated Hermes, Inc.2,885,801$228.1M0.43%+91,785+3.3%Added
Blair William & Co2,795,346$220.9M0.69%+71,440+2.6%Added
DF Dent & Co Inc2,585,023$204.3M2.05%−162,570−5.9%Reduced
Harding Loevner LP2,482,357$196.2M0.75%−63,847−2.5%Reduced
Riverbridge Partners LLC2,476,376$195.7M1.94%−31,970−1.3%Reduced
Wellington Management Group LLP2,298,577$181.7M0.03%−2,185,417−48.7%Reduced
Alkeon Capital Management LLC2,270,449$179.4M0.61%−1,560,000−40.7%Reduced
Champlain Investment Partners, LLC2,164,895$171.1M0.77%+533,760+32.7%Added
Select Equity Group, L.P.2,090,776$165.2M0.49%+557,672+36.4%Added
Legal & General Group Plc2,030,210$160.4M0.05%−128,148−5.9%Reduced
Bank of New York Mellon Corp1,896,271$149.9M0.03%−21,429−1.1%Reduced
Echo Street Capital Management LLC1,707,136$134.9M0.91%+291,947+20.6%Added
Ensign Peak Advisors, Inc1,678,684$132.7M0.25%+191,602+12.9%Added
Neuberger Berman Group LLC1,613,743$127.5M0.10%+269,618+20.1%Added
Jennison Associates LLC1,612,270$127.4M0.08%+541,329+50.5%Added
Swiss National Bank1,501,190$118.6M0.07%−62,400−4.0%Reduced
CIBC Private Wealth Group, LLC1,426,005$112.7M0.23%−20,392−1.4%Reduced
Goldman Sachs Group Inc1,396,159$110.3M0.03%−332,426−19.2%Reduced
Charles Schwab Investment Management Inc1,314,816$103.9M0.03%+44,004+3.5%Added
ExodusPoint Capital Management, LP1,307,031$103.3M1.27%+514,330+64.9%Added
Granahan Investment Management Inc1,290,189$102.0M2.10%−50,864−3.8%Reduced
Fred Alger Management, LLC1,286,589$101.7M0.25%+245,290+23.6%Added
FMR LLC1,276,488$100.9M0.01%−1,703−0.1%Reduced
William Blair Investment Management, LLC1,243,453$98.3M0.27%+383,552+44.6%Added
APG Asset Management N.V.1,411,993$98.1M0.17%−58,091−4.0%Reduced
UBS Asset Management Americas Inc1,219,523$96.4M0.04%+1,311+0.1%Added
Korea Investment CORP1,216,423$96.1M0.25%+75,079+6.6%Added
Morgan Stanley1,184,968$93.6M0.01%−36,534−3.0%Reduced
Kayne Anderson Rudnick Investment Management LLC1,175,532$92.9M0.21%−14,244−1.2%Reduced
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management1,129,400$89.3M3.58%+189,900+20.2%Added
Envestnet Asset Management Inc1,113,055$88.0M0.04%−13,043−1.2%Reduced
Victory Capital Management Inc1,094,868$86.5M0.08%−411,537−27.3%Reduced
Sumitomo Mitsui Trust Holdings, Inc.1,088,785$86.0M0.05%−182,529−14.4%Reduced
Nuveen Asset Management, LLC1,076,320$85.1M0.03%−119,311−10.0%Reduced
Millennium Management LLC1,071,670$84.7M0.09%+313,911+41.4%Added
Pictet Asset Management SA951,281$75.2M0.08%+142,516+17.6%Added
Ci Investments Inc.926,948$73.3M0.25%+133,750+16.9%Added
STRS Ohio911,093$72.0M0.25%+144,030+18.8%Added
American Century Companies Inc903,636$71.4M0.05%−569−0.1%Reduced
SEI Investments Co893,833$70.7M0.13%+136,486+18.0%Added
Mitsubishi UFJ Trust & Banking Corp882,225$69.7M0.15%+75,660+9.4%Added
Dimensional Fund Advisors LP869,906$68.8M0.02%+24,223+2.9%Added
Baird Financial Group, Inc.848,108$67.0M0.16%−23,706−2.7%Reduced
Wells Fargo & Company847,132$66.9M0.02%−61,119−6.7%Reduced
Renaissance Technologies LLC839,680$66.4M0.08%+839,680New
California Public Employees Retirement System833,411$65.9M0.04%+37,783+4.7%Added
Rathbone Brothers plc829,000$65.5M0.64%−900.0%Reduced
TD Asset Management Inc807,081$63.8M0.05%−202,918−20.1%Reduced
TimesSquare Capital Management, LLC766,000$60.5M0.54%−201,000−20.8%Reduced
American Capital Management Inc745,335$58.9M1.51%+38,358+5.4%Added
California State Teachers Retirement System698,591$55.2M0.06%+8,955+1.3%Added
Deutsche Bank AG692,996$54.8M0.02%+283,942+69.4%Added
Raymond James & Associates680,085$53.7M0.04%+165,506+32.2%Added
Invesco Ltd.663,243$52.4M0.01%+298,705+81.9%Added
Parametric Portfolio Associates LLC659,351$52.1M0.03%−81,252−11.0%Reduced
Mackenzie Financial Corp656,446$51.9M0.07%+620,766+1,739.8%Added
Peregrine Capital Management LLC638,600$50.5M1.01%+53,380+9.1%Added
Cooper Investors Pty Ltd585,811$46.3M2.92%+306,634+109.8%Added
New York State Common Retirement Fund554,284$43.8M0.04%+1,947+0.4%Added
National Pension Service550,033$43.5M0.08%−4,342−0.8%Reduced
Assenagon Asset Management S.A.532,645$42.1M0.16%+201,066+60.6%Added
Wildcat Capital Management, LLC528,640$41.8M6.80%−54,940−9.4%Reduced
Geneva Capital Management LLC523,309$41.4M0.67%−18,528−3.4%Reduced
State Board of Administration of Florida Retirement System507,758$40.1M0.07%−2,577−0.5%Reduced
Capital World Investors500,000$39.5M0.01%00.0%Unchanged
Truist Financial Corp481,424$38.0M0.06%−22,761−4.5%Reduced
Chicago Capital, LLC457,136$36.1M1.35%−11,968−2.6%Reduced
Ycg, LLC452,560$35.8M3.15%+99,887+28.3%Added
Kornitzer Capital Management Inc427,905$33.8M0.50%−670−0.2%Reduced
Flossbach Von Storch AG423,070$33.4M0.09%−3,550−0.8%Reduced
Stephens Investment Management Group LLC417,696$33.0M0.43%−2,356−0.6%Reduced
Credit Suisse AG394,177$31.2M0.03%−4,609−1.2%Reduced
Amundi416,432$30.8M0.02%−68,034−14.0%Reduced