DOSSIER · 13F-HR · Q1 2026

Yorktown Energy Partners X, L.P.

$69M in tracked AUM across 4 positions as of Q1 2026.

YE
CIK 0001577919 · last filed Mar 31, 2026
Total AUM
$69M
as of Q1 2026
Holdings
4
positions
Whale Score
65
65
tracked
Activity
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of Yorktown Energy Partners X, L.P. 13F Filing
Portfolio Overview

Yorktown Energy Partners X, L.P. exhibits a highly concentrated, high-conviction investment strategy tailored to the energy sector. As of the reporting period ending September 30, 2025, the firm’s total portfolio value surged to $107.42 million, marking a substantial increase of +94.1% from the $55.34 million reported in the previous quarter. This significant growth in portfolio value is driven...

Key Holdings

The portfolio is dominated by a massive position in Ramaco Resources Inc (METC), which accounts for $83.07 million or 77.33% of the total assets. With 2.5 million shares held, this position represents the core anchor of the fund's strategy. The second and third largest positions appear to represent complex ownership structures or distinct share classes related to the same or affiliated entities. The second position, listed simply as "Ramaco Resources Inc" without a ticker, holds $13.75 million (12.80% of the portfolio), while the third position, Riley Exploration Permian Inc, holds $10.60 million (9.86% of the portfolio). The heavy weighting toward Ramaco Resources—totaling approximately 90% of the portfolio when combining the top two positions—signals an extreme conviction in the company’s operational performance and market outlook.

Sector Allocation

The sector allocation reveals an exclusive focus on the Energy sector, with $83.07 million explicitly allocated to METC. The remaining $24.35 million is categorized as "Unknown," which likely corresponds to the positions listed without specific tickers (the second Ramaco entry and potentially Riley Exploration if the specific sector classification was pending or ambiguous in the raw data). However, given the nature of the named holdings, it is highly probable that the entire portfolio is 100% allocated to energy equities, specifically those involved in coal and Permian basin oil and gas exploration. There is a complete absence of hedging through other sectors (such as technology or healthcare) or asset classes, reinforcing the firm's identity as a specialized energy investment vehicle.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
METC
Ramaco Resources Inc
$30M2.0M43.8%
02
EPSN
Epsilon Energy Ltd
$16M2.7M23.5%
03
REPX
Riley Exploration Permian Inc
$14M391K20.5%
04
METCB
Ramaco Resources Inc
$8M827K12.1%

Filing history

2026Q1Mar 31
$69M 10.2%
4 positionsView →
2025Q4Dec 31
$77M 27.9%
4 positionsView →
2025Q3Sep 30
$107M 94.1%
3 positionsView →
2025Q2Jun 30
$55M 37.4%
3 positionsLocked
2025Q1Mar 31
$40M 23.0%
3 positionsLocked
2024Q4Dec 31
$52M 5.6%
3 positionsLocked
2024Q3Sep 30
$55M 5.4%
3 positionsLocked
2024Q2Jun 30
$59M 31.5%
3 positionsLocked
2024Q1Mar 31
$86M 6.6%
4 positionsLocked
2023Q4Dec 31
$80M 40.1%
4 positionsLocked
2023Q3Sep 30
$134M 10.7%
5 positionsLocked
2023Q2Jun 30
$121M 16.1%
5 positionsLocked
Showing 12 of 36