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Livermore
Livermore
ZHEN

Harbor Advisors LLC

SEC CIK
0001687156
Latest filing
Jul 28, 2026

CSGP holding history

Costar Group, Inc. in every 13F filed by Harbor Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

CSGP overviewAll 13F holders of CSGPFull Q2 2026 holdings

Shares (Q2 2026)
26,560
Value
$752.2K
% of portfolio
0.1%
Quarters held
22
Since Q1 2021
Holdings of CSGP by Harbor Advisors LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202626,560$752.2K0.1%00.0%UnchangedHolders
Q1 202626,560$1.07M0.2%00.0%UnchangedHolders
Q4 202526,560$1.79M0.3%+4,000+17.7%AddedHolders
Q3 202522,560$1.90M0.3%00.0%UnchangedHolders
Q2 202522,560$1.81M0.3%00.0%UnchangedHolders
Q1 202522,560$1.79M0.3%00.0%UnchangedHolders
Q4 202422,560$1.62M0.3%+2,500+12.5%AddedHolders
Q3 202420,060$1.51M0.3%+3,000+17.6%AddedHolders
Q2 202417,060$1.26M0.2%00.0%UnchangedHolders
Q1 202417,060$1.65M0.3%00.0%UnchangedHolders
Q4 202317,060$1.49M0.3%+7,000+69.6%AddedHolders
Q3 202310,060$773.5K0.2%00.0%UnchangedHolders
Q2 202310,060$895.3K0.2%00.0%UnchangedHolders
Q1 202310,060$692.6K0.2%00.0%UnchangedHolders
Q4 202210,060$777.4K0.2%00.0%UnchangedHolders
Q3 202210,060$701.0K0.2%00.0%UnchangedHolders
Q2 202210,060$608.0K0.1%00.0%UnchangedHolders
Q1 202210,060$670.0K0.1%00.0%UnchangedHolders
Q4 202110,060$795.0K0.1%00.0%UnchangedHolders
Q3 202110,060$866.0K0.2%00.0%UnchangedHolders
Q2 202110,060$833.0K0.2%00.0%UnchangedConverted for a 10-for-1 splitHolders
Q1 20211,006$827.0K0.2%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.