CSGP fund manager activity
CoStar Group, Inc · Nasdaq. Reported by 14 tracked fund managers in their 13F filings, Q2 2013 to Q2 2026.
Q4 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Chuck Akre - Akre Capital Management | Added | 9,617,805 | $646,701,208 | 7.09% | Feb 13, 2026 |
| Ron Baron - Baron Capital | Added | 19,498,099 | $1,311,052,177 | 3.55% | Feb 17, 2026 |
| Joel Greenblatt - Gotham Asset Management | Added | 130,347 | $8,764,532 | 0.03% | Feb 17, 2026 |
| Polen Capital Management | Trimmed | 4,890,936 | $328,866,546 | 1.40% | Feb 12, 2026 |
| Dennis Hong - ShawSpring Partners | Added | 957,557 | $64,386,133 | 12.1% | Feb 13, 2026 |
| Daniel Loeb - Third Point | Added | 3,165,000 | $212,814,600 | 2.93% | Feb 17, 2026 |
| Chase Coleman - Tiger Global Management | Trimmed | 2,259,109 | $151,902,489 | 0.51% | Feb 17, 2026 |
| Viking Global Investors | Trimmed | 1,442,582 | $96,999,214 | 0.26% | Feb 17, 2026 |
| Vulcan Value Partners | Added | 4,485,021 | $301,527 | 5.44% | Mar 17, 2026 |
| Wallace Weitz - Weitz Investment Management | No change | 719,850 | $48,402,714 | 2.87% | Feb 12, 2026 |
Q3 2025
| Manager | Activity | Shares | Value | % of portfolio | Filed |
|---|---|---|---|---|---|
| Chuck Akre - Akre Capital Management | Trimmed | 9,306,485 | $785,188,139 | 7.83% | Nov 13, 2025 |
| Ron Baron - Baron Capital | Trimmed | 19,255,566 | $1,624,592,103 | 4.31% | Nov 14, 2025 |
| Jeremy Grantham - GMO | Sold out | — | — | 0.00% | Nov 13, 2025 |
| Joel Greenblatt - Gotham Asset Management | Added | 22,651 | $1,911,065 | 0.01% | Nov 14, 2025 |
| Thomas Gayner - Markel Group | Sold out | — | — | 0.00% | Oct 31, 2025 |
| Polen Capital Management | Trimmed | 6,380,909 | $538,357,326 | 1.75% | Nov 12, 2025 |
| Dennis Hong - ShawSpring Partners | Trimmed | 896,034 | $75,598,389 | 11.2% | Nov 13, 2025 |
| Daniel Loeb - Third Point | Trimmed | 3,017,000 | $254,544,290 | 3.04% | Nov 14, 2025 |
| Chase Coleman - Tiger Global Management | No change | 3,245,109 | $273,789,846 | 0.85% | Nov 14, 2025 |
| Viking Global Investors | Trimmed | 1,849,729 | $156,061,636 | 0.41% | Nov 14, 2025 |
| Vulcan Value Partners | Added | 3,831,609 | $323,203,808 | 5.86% | Nov 10, 2025 |
| Wallace Weitz - Weitz Investment Management | Trimmed | 719,850 | $60,733,745 | 3.30% | Nov 10, 2025 |