Harbor Advisors’s CoStar Group CSGP Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $752K | Hold |
26,560
| – | – | 0.09% | 99 |
|
|
2026
Q1 | $1.07M | Hold |
26,560
| – | – | 0.15% | 75 |
|
|
2025
Q4 | $1.79M | Buy |
26,560
+4,000
| +18% | +$283K | 0.27% | 52 |
|
|
2025
Q3 | $1.9M | Hold |
22,560
| – | – | 0.29% | 50 |
|
|
2025
Q2 | $1.81M | Hold |
22,560
| – | – | 0.3% | 47 |
|
|
2025
Q1 | $1.79M | Hold |
22,560
| – | – | 0.31% | 45 |
|
|
2024
Q4 | $1.62M | Buy |
22,560
+2,500
| +12% | +$189K | 0.25% | 51 |
|
|
2024
Q3 | $1.51M | Buy |
20,060
+3,000
| +18% | +$228K | 0.25% | 51 |
|
|
2024
Q2 | $1.26M | Hold |
17,060
| – | – | 0.23% | 52 |
|
|
2024
Q1 | $1.65M | Hold |
17,060
| – | – | 0.3% | 46 |
|
|
2023
Q4 | $1.49M | Buy |
17,060
+7,000
| +70% | +$567K | 0.29% | 44 |
|
|
2023
Q3 | $774K | Hold |
10,060
| – | – | 0.17% | 73 |
|
|
2023
Q2 | $895K | Hold |
10,060
| – | – | 0.19% | 58 |
|
|
2023
Q1 | $693K | Hold |
10,060
| – | – | 0.16% | 67 |
|
|
2022
Q4 | $777K | Hold |
10,060
| – | – | 0.19% | 66 |
|
|
2022
Q3 | $701K | Hold |
10,060
| – | – | 0.19% | 67 |
|
|
2022
Q2 | $608K | Hold |
10,060
| – | – | 0.15% | 74 |
|
|
2022
Q1 | $670K | Hold |
10,060
| – | – | 0.14% | 77 |
|
|
2021
Q4 | $795K | Hold |
10,060
| – | – | 0.15% | 75 |
|
|
2021
Q3 | $866K | Hold |
10,060
| – | – | 0.17% | 68 |
|
|
2021
Q2 | $833K | Hold |
10,060
| – | – | 0.16% | 68 |
|
|
2021
Q1 | $827K | Hold |
10,060
| – | – | 0.18% | 65 |
|
|
2020
Q4 | $930K | Hold |
10,060
| – | – | 0.21% | 57 |
|
|
2020
Q3 | $854K | Hold |
10,060
| – | – | 0.2% | 54 |
|
|
2020
Q2 | $715K | Hold |
10,060
| – | – | 0.18% | 56 |
|
|
2020
Q1 | $591K | Hold |
10,060
| – | – | 0.18% | 56 |
|
|
2019
Q4 | $602K | Hold |
10,060
| – | – | 0.16% | 73 |
|
|
2019
Q3 | $597K | Hold |
10,060
| – | – | 0.17% | 74 |
|
|
2019
Q2 | $557K | Buy |
10,060
+2,000
| +25% | +$102K | 0.17% | 84 |
|
|
2019
Q1 | $376K | Hold |
8,060
| – | – | 0.12% | 106 |
|
|
2018
Q4 | $272K | Hold |
8,060
| – | – | 0.11% | 124 |
|
|
2018
Q3 | $339K | Hold |
8,060
| – | – | 0.11% | 132 |
|
|
2018
Q2 | $333K | Hold |
8,060
| – | – | 0.11% | 129 |
|
|
2018
Q1 | $292K | Buy |
+8,060
| New | +$278K | 0.1% | 138 |
|
Other funds holding CSGP
ACM
Harbor Advisors's CSGP Position: Q2 2026 in Review
Harbor Advisors held its CoStar Group (CSGP) position steady in Q2 2026 at 26,560 shares worth $752K. The position accounts for 0.09% of the portfolio, ranked #99.
Harbor Advisors first reported a position in CSGP in Q1 2018 and has held it in 34 quarters since. The position peaked at $1.9M in Q3 2025. 757 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.
- Harbor Advisors held 26,560 shares of CoStar Group worth $752K as of Q2 2026.
- Harbor Advisors left its CoStar Group share count unchanged in Q2 2026.
- CoStar Group made up 0.09% of Harbor Advisors's portfolio in Q2 2026, its #99 holding.
- Harbor Advisors first reported a position in CoStar Group in Q1 2018 and has held it in 34 quarters since.
- Harbor Advisors's CoStar Group position peaked at $1.9M in Q3 2025.
- 757 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.
Based on Harbor Advisors's 13F filing for Q2 2026, filed 28 Jul 2026.