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GROUP ONE TRADING LLC

Position in CSGP — Costar Group, Inc.

CIK 932540 CHICAGO, IL

Position in CSGP

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$109,003
-$1,218,112 QoQ
Shares Held
3,849
-80.5% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#550
of 747 holders
Holding Since
Dec 2020
8 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CSGP Over Time

Shares Held

Position Value (USD)

Position in Real Estate Services

Real Estate · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $1,461,676 across 13 Real Estate Services names. CSGP ranks #4 (7.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 CSGP
Costar Group, Inc.
This page
3,849 $109,003

All Filings in CSGP

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $109,003 3,849
2025-12-31 $1,327,115 19,737
2025-09-30 $89,516 1,061
2025-03-31 $258,606 3,264
2024-12-31 $492,968 6,886
2021-12-31 $336,904 4,263
2021-03-31 $477,518 581
2020-12-31 $184,856 200