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HEARTLAND ADVISORS INC

Position in MTDR — Matador Resources Co

CIK 937394 MILWAUKEE, WI

Position in MTDR

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$6,686,350
-$2,934,889 QoQ
Shares Held
134,318
-11.8% QoQ
Ownership
0.109%
of shares outstanding
% of Portfolio
0.30%
of 13F equity value
Holder Rank
#103
of 489 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority Sole 95% Shared 0% None 5%

Common Shares in MTDR Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas E&P

Energy · as of Jun 30, 2026

HEARTLAND ADVISORS INC holds $44,002,223 across 3 Oil & Gas E&P names. MTDR ranks #3 (15.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 MTDR
Matador Resources Co
This page
134,318 $6,686,350

All Filings in MTDR

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7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $6,686,350 134,318
2026-03-31 $9,621,239 152,283
2025-12-31 $8,919,996 210,179
2025-09-30 $7,673,504 170,788
2025-06-30 $7,323,111 153,460
2025-03-31 $6,837,783 133,838
2024-12-31 $6,038,779 107,337