Yorktown Energy Partners X, L.P.
CIK
1577919
Location
New York, NY
Portfolio Value
Micro
$61,062,876
Diversification
Highly concentrated
Filing Date
Global Rank
#6,578
/ 8,608
▼ 23
· as of Mar 2026
Top Industry
Oil & Gas E&P
50.1%
3Y Alpha vs SPY
-6.4%
Period ended 3 months ago
Filed May 15, 2026 · 59d
25 quarters · since Mar 2020
Clone Performance
Jul 2023–Jul 2026 · vs SPYHypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.
Cloned portfolio
+45.7%
SPY
+73.9%
Annualised alpha
-6.9%
Max drawdown
−68.1%
Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.
Portfolio Concentration
3 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025Top Position
49.9%
−16.7 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
3,749
Highly concentrated−1,243
Portfolio Trend
25 quarters · across all stocks
Sector Breakdown
As of Mar 31, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Energy | 50.1% | $30,612,149 |
| Basic Materials | 49.9% | $30,450,727 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increasedNo qualifying positions this quarter.
Trimmed
Positions the filer reduced
1 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| METC | Ramaco Resources, Inc. | −533,284 | 1,969,646 | $30,450,727 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarterNo qualifying positions this quarter.
Sold Out
Positions the filer fully exitedNo qualifying positions this quarter.
3 positions ·
$61,062,876 total
· as of Mar 31, 2026
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| METC |
Ramaco Resources, Inc.
Basic Materials
|
Reduced | 1,969,646 | $30,450,727 | 49.87% | |
| EPSN |
Epsilon Energy Ltd.
Energy
|
Held | 2,656,705 | $16,365,302 | 26.80% | |
| REPX |
Riley Exploration Permian, Inc.
Energy
|
Held | 390,860 | $14,246,847 | 23.33% |