CSGP
CoStar Group, Inc. · Real Estate · Real Estate - Services
Momentum inputs (comparable managers):
holder breadth -5.6% ·
share flow +2.7% ·
net new positions -5.9%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 161 | -1 | 285.24M | $8.09B | +6 | −6 |
| Q1 2026 | 164 | -4 | 297.65M | $12.02B | +8 | −13 |
| Q4 2025 | 167 | 0 | 346.71M | $23.31B | +2 | −1 |
| Q3 2025 | 23 | -3 | 175.87M | $14.83B | — | −4 |
| Q2 2025 | 24 | +4 | 163.02M | $13.10B | +4 | — |
| Q1 2025 | 17 | -1 | 53.06M | $4.20B | +2 | −3 |
| Q4 2024 | 18 | +1 | 51.64M | $3.69B | +2 | −1 |
| Q3 2024 | 16 | +2 | 30.21M | $2.28B | +3 | −1 |
| Q2 2024 | 14 | — | 29.50M | $2.19B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 17.57M | +3.2% | $1.39B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 12.07M | +5.2% | $953.41M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 12.07M | +5.2% | $953.41M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 4 | Baillie Gifford ✦ | 8.44M | +6.6% | $668.40M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 5 | Baillie Gifford ✦ | 8.44M | +6.6% | $668.40M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 6 | Baillie Gifford ✦ | 8.44M | +6.6% | $668.40M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 7 | Baillie Gifford ✦ | 8.44M | +6.6% | $668.40M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 8 | Norges Bank ✦ (passive) | 5.27M | -3.5% | $417.50M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 9 | Tiger Global Management ✦ | 3.25M | 0.0% | $257.11M | 1.0% | Held | 2 | SEC ↗ |
| 10 | Third Point ✦ | 1.98M | New | $156.48M | 2.5% | New | 1 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 1.04M | -17.0% | $82.62M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 1.04M | -17.0% | $82.62M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | Bridgewater Associates ✦ | 985.99K | +12.1% | $78.12M | 0.4% | ▲ Add | 4 | SEC ↗ |
| 14 | D. E. Shaw & Co. ✦ | 916.69K | -36.0% | $72.63M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 15 | Arrowstreet Capital ✦ | 492.28K | +1903.0% | $39.00M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | Adage Capital Partners ✦ | 384.60K | +52.9% | $30.47M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 17 | Millennium Management ✦ | 325.43K | -25.1% | $25.78M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 128.60K | +351.7% | $10.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 128.60K | +351.7% | $10.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 128.60K | +351.7% | $10.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 21 | AQR Capital Management ✦ | 128.60K | +351.7% | $10.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 22 | AQR Capital Management ✦ | 128.60K | +351.7% | $10.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 23 | Wellington Management ✦ | 93.43K | -23.5% | $7.40M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 24 | Wellington Management ✦ | 93.43K | -23.5% | $7.40M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 25 | PRIMECAP Management ✦ | 56.50K | New | $4.48M | 0.0% | New | 1 | SEC ↗ |
| 26 | Citadel Advisors ✦ | 43.49K | -79.1% | $3.45M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 27 | Citadel Advisors ✦ | 43.49K | -79.1% | $3.45M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 28 | Markel Group ✦ | 18.60K | 0.0% | $1.47M | 0.0% | Held | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Third Point | $156.48M | 2.5% |
| PRIMECAP Management | $4.48M | 0.0% |
Exited
| Viking Global Investors | $83.24M | was 0.3% |
| Point72 Asset Management | $29.89M | was 0.1% |
| Marshall Wace | $19.90M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 787 holders, 405.09M shares, $16.02B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 4.79K sh · $147,375
Director · 3.50K sh · $105,735
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology