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Super Investors Yorktown Energy Partners XI, L.P.
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Yorktown Energy Partners XI, L.P.

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$108M
Positions
4
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (39 quarters reported)

$300M $12.5M
Q4 16 Q4 18 Q4 20 Q4 22 Q4 24 Q2 26

$86.4M in Q4 2016 → $108M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Riley Exploration Permian 39.2% Trimmed 28% 1,284,113 $42.3M
Ramaco Resources Inc 36.5% Unchanged 2,979,968 $39.4M
Epsilon Energy Ltd 14.4% Unchanged 2,869,560 $15.5M
Ramaco Resources Inc 10.0% Added 1.2% 1,265,591 $10.8M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Riley Exploration Permian Trimmed −500,000 −$16.5M 39.2%
Ramaco Resources Inc Added +14,978 +$128K 10.0%

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Ramaco Resources Inc Trimmed −806,829 −$12.5M 32.6%
Epsilon Energy Ltd Added +90,117 +$555K 12.5%
Ramaco Resources Inc Trimmed −1,914 −$19.5K 9.0%

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Epsilon Energy Ltd New +2,779,443 +$12.9M 9.0%
Ramaco Resources Inc Added +17,768 +$209K 10.3%

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
Ramaco Resources Inc Trimmed −645,463 −$21.4M 64.5%
Ramaco Resources Inc Added +14,626 +$246K 10.7%

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
Ramaco Resources Inc Added +208,397 +$1.7M 8.7%
Ramaco Resources Inc Trimmed −1 −$13 50.6%

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
RR Ramaco Res Inc Trimmed −403,415 −$3.32M 38.1%
RR Ramaco Res Inc Trimmed −67,286 −$478K 7.5%

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

No position changes this quarter.

Q3 2024

quarter ended September 30, 2024 · filed November 13, 2024

No position changes this quarter.

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