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.
Superinvestors holding CSGP, Q2 2026
2 superinvestors report holding Costar Group, Inc. on Form 13F, worth $343.3M in total. Weight is Costar Group, Inc.'s share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Akre Capital ManagementChuck Akre | 6.5% | 11,699,396 | $331.3M | Added+13.1% |
| Weitz Investment ManagementWally Weitz | 0.8% | 423,181 | $12.0M | Reduced−18.2% |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of CSGP each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
2 superinvestors holding at quarter end
- Added
- Akre Capital Management (+13.1%)
- Reduced
- Weitz Investment Management (−18.2%)
- Sold out
- Tiger Global Management
Q1 2026
3 superinvestors holding at quarter end
- Added
- Akre Capital Management (+7.6%)
- Reduced
- Tiger Global Management (−33.6%), Weitz Investment Management (−28.2%)
- Sold out
- Third Point, Viking Global Investors
Q4 2025
5 superinvestors holding at quarter end
- Added
- Akre Capital Management (+3.3%), Third Point (+4.9%)
- Reduced
- Tiger Global Management (−30.4%), Viking Global Investors (−22.0%)
Q3 2025
5 superinvestors holding at quarter end
- Reduced
- Akre Capital Management (0.0%), Third Point (−2.2%), Viking Global Investors (−42.5%), Weitz Investment Management (−6.0%)
- Sold out
- Markel Group
Q2 2025
6 superinvestors holding at quarter end
- New
- Viking Global Investors
- Added
- Third Point (+56.2%)
- Reduced
- Akre Capital Management (0.0%), Weitz Investment Management (−16.0%)
Q1 2025
5 superinvestors holding at quarter end
- New
- Third Point
- Added
- Weitz Investment Management (+2.4%)
- Reduced
- Akre Capital Management (0.0%)
- Sold out
- Viking Global Investors
Q4 2024
5 superinvestors holding at quarter end
- New
- Tiger Global Management
- Added
- Akre Capital Management (+4.3%), Weitz Investment Management (+0.4%)
- Reduced
- Viking Global Investors (−7.8%)
Q3 2024
4 superinvestors holding at quarter end
- New
- Viking Global Investors
- Added
- Akre Capital Management (+1.9%)
Q2 2024
3 superinvestors holding at quarter end
- Added
- Akre Capital Management (+20.8%), Weitz Investment Management (+1.1%)
Q1 2024
3 superinvestors holding at quarter end
- Added
- Akre Capital Management (+0.1%)
Q4 2023
3 superinvestors holding at quarter end
- Added
- Akre Capital Management (+0.1%)
- Reduced
- Weitz Investment Management (−7.4%)
Q3 2023
3 superinvestors holding at quarter end
- Added
- Akre Capital Management (+1.9%)
- Reduced
- Weitz Investment Management (−11.3%)
Q2 2023
3 superinvestors holding at quarter end
- Reduced
- Weitz Investment Management (−3.0%)
Q1 2023
3 superinvestors holding at quarter end
- Reduced
- Weitz Investment Management (−0.5%)
Q4 2022
3 superinvestors holding at quarter end
- Reduced
- Weitz Investment Management (−11.4%)
Q3 2022
3 superinvestors holding at quarter end
- Reduced
- Weitz Investment Management (−14.8%)
Q2 2022
3 superinvestors holding at quarter end
- Added
- Weitz Investment Management (+1.4%), Markel Group (+5.7%)
- Reduced
- Akre Capital Management (−26.4%)
Q1 2022
3 superinvestors holding at quarter end
- Added
- Weitz Investment Management (+27.8%), Markel Group (+467.7%)
- Reduced
- Akre Capital Management (−1.0%)
- Sold out
- Third Point
Q4 2021
4 superinvestors holding at quarter end
- New
- Markel Group
- Added
- Akre Capital Management (0.0%), Weitz Investment Management (+20.2%)
- Sold out
- Maverick Capital
Q3 2021
4 superinvestors holding at quarter end
- Added
- Third Point (+0.3%), Weitz Investment Management (+4.4%), Maverick Capital (+68.6%)
- Reduced
- Akre Capital Management (0.0%)
Q2 2021
4 superinvestors holding at quarter end
Converted for a 10-for-1 split- Added
- Third Point (+3.1%), Weitz Investment Management (+7.8%), Maverick Capital (+161.1%)