Skip to main content

MATTERN CAPITAL MANAGEMENT, LLC

Position in CSGP — Costar Group, Inc.

CIK 1803227 LAKEWOOD, CO

Position in CSGP

as of Jun 30, 2026 · filed Jul 24, 2026
Position Value
$805,704
+$9,191 QoQ
Shares Held
28,450
+44.1% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
#331
of 747 holders
Holding Since
Mar 2024
10 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

MATTERN CAPITAL MANAGEMENT, LLC holds $805,704 across 1 Real Estate Services name. CSGP ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CSGP
Costar Group, Inc.
This page
28,450 $805,704

All Filings in CSGP

Export CSV
10 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $805,704 28,450
2026-03-31 $796,513 19,745
2025-12-31 $1,106,972 16,463
2025-09-30 $1,113,430 13,197
2025-06-30 $889,465 11,063
2025-03-31 $783,584 9,890
2024-12-31 $635,576 8,878
2024-09-30 $580,133 7,690
2024-06-30 $455,886 6,149
2024-03-31 $424,846 4,398