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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 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: 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 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 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 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
State of New Jersey Common Pension Fund D229,881$18.2M0.05%+533+0.2%Added
National Bank of Canada232,742$18.4M0.08%+232,742New
Susquehanna International Group, LLP247,765$19.6M0.03%+59,722+31.8%Added
Night Owl Capital Management, LLC248,883$19.7M4.00%+147,760+146.1%Added
Baskin Financial Services Inc.256,233$20.3M1.61%+256,233New
AQR Capital Management LLC258,244$20.4M0.04%−3,827−1.5%Reduced
D. E. Shaw & Co., Inc.259,160$20.5M0.02%+259,160New
Locust Wood Capital Advisers, LLC265,073$20.9M1.18%+265,073New
Great West Life Assurance Co267,713$21.1M0.04%−9,402−3.4%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.285,920$22.5M0.09%+30,422+11.9%Added
Connectus Wealth, LLC287,322$22.7M0.88%+16,215+6.0%Added
Ashford Capital Management Inc288,652$22.8M2.27%−1,091−0.4%Reduced
Ironvine Capital Partners, LLC289,520$22.9M2.35%+51,964+21.9%Added
Royal London Asset Management Ltd291,830$23.1M0.09%−15,242−5.0%Reduced
Royal Bank of Canada297,926$23.5M0.01%+40,422+15.7%Added
Barclays PLC298,099$23.6M0.01%−42,129−12.4%Reduced
TCW Group Inc299,733$23.7M0.20%+8,123+2.8%Added
Putnam Investments LLC301,340$23.8M0.03%−2,347,354−88.6%Reduced
Scout Investments, Inc.301,553$23.8M0.35%+38,825+14.8%Added
Citigroup Inc302,171$23.9M0.02%−82,084−21.4%Reduced
Asset Management One Co.,Ltd.300,692$24.0M0.08%−978−0.3%Reduced
Qube Research & Technologies Ltd318,757$25.2M0.19%+318,757New
Man Group plc323,291$25.5M0.08%+63,219+24.3%Added
HRT Financial LP336,549$26.6M0.15%−66,096−16.4%Reduced
Brown Advisory Inc337,636$26.7M0.03%+66,272+24.4%Added
Nissay Asset Management Corp338,912$26.8M0.21%+17,340+5.4%Added
KBC Group NV346,447$27.4M0.09%+214,544+162.7%Added
Stifel Financial Corp361,825$28.6M0.04%+3,934+1.1%Added
Sandhill Capital Partners LLC362,314$28.6M2.22%+66,211+22.4%Added
Rhumbline Advisers367,150$29.0M0.04%+9,241+2.6%Added
LMR Partners LLP367,530$29.0M0.38%00.0%Unchanged
Quantum Capital Management, LLC374,211$29.6M3.28%+1,745+0.5%Added
FIL Ltd376,621$29.8M0.03%+42,493+12.7%Added
Amundi416,432$30.8M0.02%−68,034−14.0%Reduced
Credit Suisse AG394,177$31.2M0.03%−4,609−1.2%Reduced
Stephens Investment Management Group LLC417,696$33.0M0.43%−2,356−0.6%Reduced
Flossbach Von Storch AG423,070$33.4M0.09%−3,550−0.8%Reduced
Kornitzer Capital Management Inc427,905$33.8M0.50%−670−0.2%Reduced
Ycg, LLC452,560$35.8M3.15%+99,887+28.3%Added
Chicago Capital, LLC457,136$36.1M1.35%−11,968−2.6%Reduced
Truist Financial Corp481,424$38.0M0.06%−22,761−4.5%Reduced
Capital World Investors500,000$39.5M0.01%00.0%Unchanged
State Board of Administration of Florida Retirement System507,758$40.1M0.07%−2,577−0.5%Reduced
Geneva Capital Management LLC523,309$41.4M0.67%−18,528−3.4%Reduced
Wildcat Capital Management, LLC528,640$41.8M6.80%−54,940−9.4%Reduced
Assenagon Asset Management S.A.532,645$42.1M0.16%+201,066+60.6%Added
National Pension Service550,033$43.5M0.08%−4,342−0.8%Reduced
New York State Common Retirement Fund554,284$43.8M0.04%+1,947+0.4%Added
Cooper Investors Pty Ltd585,811$46.3M2.92%+306,634+109.8%Added
Peregrine Capital Management LLC638,600$50.5M1.01%+53,380+9.1%Added
Mackenzie Financial Corp656,446$51.9M0.07%+620,766+1,739.8%Added
Parametric Portfolio Associates LLC659,351$52.1M0.03%−81,252−11.0%Reduced
Invesco Ltd.663,243$52.4M0.01%+298,705+81.9%Added
Raymond James & Associates680,085$53.7M0.04%+165,506+32.2%Added
Deutsche Bank AG692,996$54.8M0.02%+283,942+69.4%Added
California State Teachers Retirement System698,591$55.2M0.06%+8,955+1.3%Added
American Capital Management Inc745,335$58.9M1.51%+38,358+5.4%Added
TimesSquare Capital Management, LLC766,000$60.5M0.54%−201,000−20.8%Reduced
TD Asset Management Inc807,081$63.8M0.05%−202,918−20.1%Reduced
Rathbone Brothers plc829,000$65.5M0.64%−900.0%Reduced
California Public Employees Retirement System833,411$65.9M0.04%+37,783+4.7%Added
Renaissance Technologies LLC839,680$66.4M0.08%+839,680New
Wells Fargo & Company847,132$66.9M0.02%−61,119−6.7%Reduced
Baird Financial Group, Inc.848,108$67.0M0.16%−23,706−2.7%Reduced
Dimensional Fund Advisors LP869,906$68.8M0.02%+24,223+2.9%Added
Mitsubishi UFJ Trust & Banking Corp882,225$69.7M0.15%+75,660+9.4%Added
SEI Investments Co893,833$70.7M0.13%+136,486+18.0%Added
American Century Companies Inc903,636$71.4M0.05%−569−0.1%Reduced
STRS Ohio911,093$72.0M0.25%+144,030+18.8%Added
Ci Investments Inc.926,948$73.3M0.25%+133,750+16.9%Added
Pictet Asset Management SA951,281$75.2M0.08%+142,516+17.6%Added
Millennium Management LLC1,071,670$84.7M0.09%+313,911+41.4%Added
Nuveen Asset Management, LLC1,076,320$85.1M0.03%−119,311−10.0%Reduced
Sumitomo Mitsui Trust Holdings, Inc.1,088,785$86.0M0.05%−182,529−14.4%Reduced
Victory Capital Management Inc1,094,868$86.5M0.08%−411,537−27.3%Reduced
Envestnet Asset Management Inc1,113,055$88.0M0.04%−13,043−1.2%Reduced
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management1,129,400$89.3M3.58%+189,900+20.2%Added
Kayne Anderson Rudnick Investment Management LLC1,175,532$92.9M0.21%−14,244−1.2%Reduced
Morgan Stanley1,184,968$93.6M0.01%−36,534−3.0%Reduced
Korea Investment CORP1,216,423$96.1M0.25%+75,079+6.6%Added
UBS Asset Management Americas Inc1,219,523$96.4M0.04%+1,311+0.1%Added
APG Asset Management N.V.1,411,993$98.1M0.17%−58,091−4.0%Reduced
William Blair Investment Management, LLC1,243,453$98.3M0.27%+383,552+44.6%Added
FMR LLC1,276,488$100.9M0.01%−1,703−0.1%Reduced
Fred Alger Management, LLC1,286,589$101.7M0.25%+245,290+23.6%Added
Granahan Investment Management Inc1,290,189$102.0M2.10%−50,864−3.8%Reduced
ExodusPoint Capital Management, LP1,307,031$103.3M1.27%+514,330+64.9%Added
Charles Schwab Investment Management Inc1,314,816$103.9M0.03%+44,004+3.5%Added
Goldman Sachs Group Inc1,396,159$110.3M0.03%−332,426−19.2%Reduced
CIBC Private Wealth Group, LLC1,426,005$112.7M0.23%−20,392−1.4%Reduced
Swiss National Bank1,501,190$118.6M0.07%−62,400−4.0%Reduced
Jennison Associates LLC1,612,270$127.4M0.08%+541,329+50.5%Added
Neuberger Berman Group LLC1,613,743$127.5M0.10%+269,618+20.1%Added
Ensign Peak Advisors, Inc1,678,684$132.7M0.25%+191,602+12.9%Added
Echo Street Capital Management LLC1,707,136$134.9M0.91%+291,947+20.6%Added
Bank of New York Mellon Corp1,896,271$149.9M0.03%−21,429−1.1%Reduced
Legal & General Group Plc2,030,210$160.4M0.05%−128,148−5.9%Reduced
Select Equity Group, L.P.2,090,776$165.2M0.49%+557,672+36.4%Added
Champlain Investment Partners, LLC2,164,895$171.1M0.77%+533,760+32.7%Added
Alkeon Capital Management LLC2,270,449$179.4M0.61%−1,560,000−40.7%Reduced