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Manager record

Mountaineer Partners Management, LLC

New York, NY · CIK 1730532 · EDGAR filings ↗

Cover-page record: Trade Filings parses every position for its tracked managers; for this filer it indexes the cover-page totals of each quarterly 13F report on SEC EDGAR.

$5.44MReported 13F valueQ2 2026 · as filed
2Holdings listed
-97.3%vs prior quartervalue change includes market moves
5Quarters on record
Aug 14Latest filed
Reported 13F value by quarter, Q2 2025 to Q2 2026Q2 2025: $151.3M$151.3MQ2 202532 holdingsQ3 2025: $171.9M$171.9MQ3 202536 holdingsQ4 2025: $178.7M$178.7MQ4 202534 holdingsQ1 2026: $201.3M$201.3MQ1 202632 holdingsQ2 2026: $5.4M$5.4MQ2 20262 holdings
Reported 13F value by quarter from the cover pages of this filer (live documents; sub-portfolio reports summed), with holdings listed beneath each bar.
Filing record
Aug 14 2026 13F-HR/A · period Q2 2026

$5.44M · 2 holdings listed · amendment (new holdings) · View original SEC filing ↗
Aug 13 2026 13F-HR · period Q2 2026

$132.04M · 21 holdings listed · View original SEC filing ↗
May 15 2026 13F-HR · period Q1 2026

$201.32M · 32 holdings listed · View original SEC filing ↗
Feb 13 2026 13F-HR · period Q4 2025

$178.72M · 34 holdings listed · View original SEC filing ↗
Nov 14 2025 13F-HR · period Q3 2025

$171.95M · 36 holdings listed · View original SEC filing ↗
Aug 14 2025 13F-HR · period Q2 2025

$151.30M · 32 holdings listed · View original SEC filing ↗
Provenance: Cover-page totals from the quarterly 13F reports of this filer on SEC EDGAR; position-level holdings are parsed for tracked managers only. Reporting period: Q2 2026 · latest filing Aug 14, 2026 · Change methodology