Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
CSGP
COSTAR GROUP INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
COSTAR GROUP INC (CSGP) is held by 10 tracked hedge-fund managers, a combined reported value of ~$512.65M; the largest are Dan Loeb, Andreas Halvorsen, Chase Coleman. This quarter: 2 added, 2 trimmed, 3 closed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · HighThis quarter · Cooling
Gurus holding10
Congress trades20
Price$32.84vs quarter-end-18.59%
Sectors0
This quarter's moves
Top holderDan LoebNew0
Added2
Trimmed / sold5
Value $20.59M— of portfolio510,4002026 Q1
Value $4.46M— of portfolio110,6002026 Q1
Value $1.95M— of portfolio48,4002026 Q1
Philippe LaffontTrim
Value $1.64M0.4% of portfolio33,2612004 Q3
Value $1.61M— of portfolio40,0002026 Q1
Value $1.04M— of portfolio25,7002026 Q1
Value $411.5K— of portfolio10,2002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Ken GriffinCALL | $20.59M | — | — |
| Ken GriffinPUT | $4.46M | — | — |
| Izzy EnglanderCALL | $1.95M | — | — |
| Philippe Laffont | $1.64M | 0.4% | Trim |
| Izzy EnglanderPUT | $1.61M | — | — |
| Steven CohenPUT | $1.04M | — | — |
| Steven CohenCALL | $411.5K | — | — |