Yorktown Energy Partners VIII, L.P. Institutional Portfolio (13F)

CIK: 0001473116

Long-term holder

Total reported value

—

Reporting period: 2025-06-30 · Number of holdings: 1

Yorktown Energy Partners VIII, L.P. disclosed 1 holdings in its latest 13F filing for the period ending 2025-06-30, with total reported value of — and a quarterly turnover rate of 0.0%.

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Personality snowflake

Concentration: 0
Portfolio Stability: 0
Momentum/Contrarian: 50
Sector conviction: 0
Diversification: 2
Sizing Uniformity: —

Sector classification currently covers about 0% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.

Recent moves

No holding changes this quarter

Holdings Map

Top 10 holdings by weight

Full holdings list this quarter

#	Ticker	Issuer	Asset Subclass	Weight	Weight Change	Shares Change	4Q Trend
1	✓	Ikena Oncology INC	Stock-Other	—	—	—

Portfolio Performance

Performance for Q3 2026

—

Performance Last 4 Quarters

-5.4%

Stdev: +37.8%
Beta: +0.05
Alpha: +15.1%
Max Drawdown: -24.6%
Annualized Perf: +9.7%
Batting Avg vs S&P: +52%
Sortino: +0.72
Stutzer: +0.13
Treynor: +3.22
Sterling: +0.31
Calmar: +0.4
Information Ratio: -0.07
Tracking Error: +39.7%
Stdev Down: +22.3%
Winning Months %: +52%
Losing Months %: +48%
Best 12 Months: +66.9%
Worst 12 Months: -10.2%
Efficiency Ratio: +0.1
Sharpe: +0.42
Stdev Sectors: —
Skewness: +0.32
Kurtosis: -0.18
Upside Potential: +2.76

Reported value over time

Sector allocation

Not enough sector-mapped data yet

Sector allocation over time

Quarterly history

Period	Holdings	Total value	Stability	Top holdings
2025-06-30	1	—	0
2025-03-31	2	$52.9M	100	1AR 2REPX Top holdings2025-03-31 1.AR 2.REPX
2024-12-31	2	$79.3M	0	1AR 2REPX Top holdings2024-12-31 1.AR 2.REPX
2024-09-30	2	$72.5M	0	1AR 2REPX Top holdings2024-09-30 1.AR 2.REPX
2024-06-30	2	$81.5M	0	1AR 2REPX Top holdings2024-06-30 1.AR 2.REPX
2024-03-31	2	$122.5M	0	1AR 2REPX Top holdings2024-03-31 1.AR 2.REPX
2023-12-31	2	$120.0M	0	1AR 2REPX Top holdings2023-12-31 1.AR 2.REPX
2023-09-30	3	$144.4M	0	1AR 2REPX 3SWN1EUR Top holdings2023-09-30 1.AR 2.REPX 3.SWN1EUR
2023-06-30	3	$146.6M	0	1AR276665T3SWN1EUR Top holdings2023-06-30 1.AR 2.76665T 3.SWN1EUR
2023-03-31	2	$105.8M	0	1AR 2SWN1EUR Top holdings2023-03-31 1.AR 2.SWN1EUR
2022-12-31	2	$139.7M	0	1AR 2SWN1EUR Top holdings2022-12-31 1.AR 2.SWN1EUR
2022-09-30	2	$169.1M	0	1AR 2SWN1EUR Top holdings2022-09-30 1.AR 2.SWN1EUR
2022-06-30	2	$195.5M	0	1AR 2SWN1EUR Top holdings2022-06-30 1.AR 2.SWN1EUR
2022-03-31	3	$280.8M	0	1AR 2SWN1EUR 3AM Top holdings2022-03-31 1.AR 2.SWN1EUR 3.AM
2021-12-31	3	$205.7M	0	1AR 2SWN1EUR 3AM Top holdings2021-12-31 1.AR 2.SWN1EUR 3.AM
2021-09-30	3	$251.7M	0	1AR 2SWN1EUR 3AM Top holdings2021-09-30 1.AR 2.SWN1EUR 3.AM
2021-06-30	2	$174.0M	83	1AR 2AM Top holdings2021-06-30 1.AR 2.AM
2021-03-31	2	$124.3M	91	1AR 2AM Top holdings2021-03-31 1.AR 2.AM
2020-12-31	2	$83.4M	55	1AR 2AM Top holdings2020-12-31 1.AR 2.AM
2020-09-30	2	$47.2M	7	1AR 2AM Top holdings2020-09-30 1.AR 2.AM
2020-06-30	2	$44.1M	100	1AR 2AM Top holdings2020-06-30 1.AR 2.AM
2020-03-31	2	$14.6M	100	1AR 2AM Top holdings2020-03-31 1.AR 2.AM
2019-12-31	2	$55.9M	23	1AR 2AM Top holdings2019-12-31 1.AR 2.AM
2019-09-30	2	$70.5M	52	1AM 2AR Top holdings2019-09-30 1.AM 2.AR
2019-06-30	3	$120.5M	47	1AM 2AR 3HNRG Top holdings2019-06-30 1.AM 2.AR 3.HNRG
2019-03-31	3	$194.8M	15	1AM 2AR 3HNRG Top holdings2019-03-31 1.AM 2.AR 3.HNRG
2018-12-31	3	$187.1M	53	1AR 2AM 3HNRG Top holdings2018-12-31 1.AR 2.AM 3.HNRG
2018-09-30	3	$323.0M	16	1AR 2AM 3HNRG Top holdings2018-09-30 1.AR 2.AM 3.HNRG
2018-06-30	3	$377.4M	10	1AR 2AM 3HNRG Top holdings2018-06-30 1.AR 2.AM 3.HNRG
2018-03-31	3	$340.6M	11	1AR 2AM 3HNRG Top holdings2018-03-31 1.AR 2.AM 3.HNRG
2017-12-31	3	$355.9M	4	1AR 2AM 3HNRG Top holdings2017-12-31 1.AR 2.AM 3.HNRG
2017-09-30	3	$369.5M	9	1AR 2AM 3HNRG Top holdings2017-09-30 1.AR 2.AM 3.HNRG
2017-06-30	3	$404.1M	51	1AR 2AM 3HNRG Top holdings2017-06-30 1.AR 2.AM 3.HNRG
2017-03-31	2	$261.4M	4	1AR 2HNRG Top holdings2017-03-31 1.AR 2.HNRG
2016-12-31	2	$273.4M	13	1AR 2HNRG Top holdings2016-12-31 1.AR 2.HNRG
2016-09-30	2	$304.2M	7	1AR 2HNRG Top holdings2016-09-30 1.AR 2.HNRG
2016-06-30	2	$284.5M	4	1AR 2HNRG Top holdings2016-06-30 1.AR 2.HNRG
2016-03-31	2	$272.8M	7	1AR 2HNRG Top holdings2016-03-31 1.AR 2.HNRG
2015-12-31	2	$254.0M	0	1AR 2HNRG Top holdings2015-12-31 1.AR 2.HNRG

Holding changes this quarter

Position changes disclosed by Yorktown Energy Partners VIII, L.P. for the quarter ending 2025-06-30, including ticker, issuer, weight change, shares change, and action
#	Ticker	Issuer	Weight Change	Shares Change	Action

Filing History

Period	Filed	Type	EDGAR
2025-06-30	2025-08-14	13F-HR	View on EDGAR
2025-03-31	2025-05-15	13F-HR	View on EDGAR
2024-12-31	2025-02-14	13F-HR	View on EDGAR
2024-09-30	2024-11-13	13F-HR	View on EDGAR
2024-06-30	2024-08-13	13F-HR	View on EDGAR
2024-03-31	2024-05-15	13F-HR	View on EDGAR
2023-12-31	2024-02-14	13F-HR	View on EDGAR
2023-09-30	2023-11-14	13F-HR	View on EDGAR
2023-06-30	2023-08-14	13F-HR	View on EDGAR
2023-03-31	2023-05-12	13F-HR	View on EDGAR
2022-12-31	2023-02-14	13F-HR	View on EDGAR
2022-09-30	2022-11-14	13F-HR	View on EDGAR
2022-06-30	2022-08-11	13F-HR	View on EDGAR
2022-03-31	2022-05-16	13F-HR	View on EDGAR
2021-12-31	2022-02-14	13F-HR	View on EDGAR
2021-09-30	2021-11-15	13F-HR	View on EDGAR
2021-06-30	2021-08-16	13F-HR	View on EDGAR
2021-03-31	2021-05-17	13F-HR	View on EDGAR
2020-12-31	2021-02-16	13F-HR	View on EDGAR
2020-09-30	2020-11-16	13F-HR	View on EDGAR
2020-06-30	2020-08-14	13F-HR	View on EDGAR
2020-03-31	2020-05-15	13F-HR	View on EDGAR
2019-12-31	2020-02-14	13F-HR	View on EDGAR
2019-09-30	2019-11-14	13F-HR	View on EDGAR
2019-06-30	2019-08-14	13F-HR	View on EDGAR
2019-03-31	2019-05-15	13F-HR	View on EDGAR
2018-12-31	2019-02-14	13F-HR	View on EDGAR
2018-09-30	2018-11-14	13F-HR	View on EDGAR
2018-06-30	2018-08-14	13F-HR	View on EDGAR
2018-03-31	2018-05-15	13F-HR	View on EDGAR
2017-12-31	2018-02-14	13F-HR	View on EDGAR
2017-09-30	2017-11-14	13F-HR	View on EDGAR
2017-06-30	2017-08-14	13F-HR	View on EDGAR
2017-03-31	2017-05-15	13F-HR	View on EDGAR
2016-12-31	2017-02-14	13F-HR	View on EDGAR
2016-09-30	2016-11-14	13F-HR	View on EDGAR
2016-06-30	2016-08-15	13F-HR	View on EDGAR
2016-03-31	2016-05-16	13F-HR	View on EDGAR
2015-12-31	2016-02-16	13F-HR	View on EDGAR

FAQ

What is Yorktown Energy Partners VIII, L.P. and what type of investor is it?

Yorktown Energy Partners VIII, L.P. is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2025-06-30), the firm manages a tracked equity portfolio valued at approximately —, spread across 1 disclosed positions.

What are Yorktown Energy Partners VIII, L.P.'s largest equity positions?

Based on the latest 13F filing, Yorktown Energy Partners VIII, L.P.'s top holdings by market value are: 1. Ikena Oncology INC — $0.0

What changes did Yorktown Energy Partners VIII, L.P. make in its most recent portfolio filing?

No notable portfolio changes were recorded for Yorktown Energy Partners VIII, L.P. in the most recent quarter. Holdings appear to have remained relatively stable.

What sectors does Yorktown Energy Partners VIII, L.P. focus on?

Sector breakdown data is not yet available for Yorktown Energy Partners VIII, L.P.. Check back after the next 13F processing cycle.

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Total reported value

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1 stks

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Concentration0.0

Portfolio Stability0.0

Sector conviction0.0

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Kresge Foundation

CIK 0000056822

Total reported value

—

1 stks

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Stale — no recent filing

Concentration0.0

Portfolio Stability0.0

Sector conviction0.0

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Resource America, INC.

CIK 0000083402

Total reported value

—

1 stks

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Stale — no recent filing

Concentration0.0

Portfolio Stability0.0

Sector conviction0.0

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Personality snowflake

Concentration

Portfolio Stability

Momentum/Contrarian

Sector conviction

Diversification

Sizing Uniformity

—

Full holdings list this quarter

Ticker

Issuer

Asset Subclass

Weight

Weight Change

Shares Change

4Q Trend

✓

Ikena Oncology INC

Stock-Other

—

Portfolio Performance

Performance for Q3 2026

—

Performance Last 4 Quarters

-5.4%

Stdev: +37.8%
Beta: +0.05
Alpha: +15.1%
Max Drawdown: -24.6%
Annualized Perf: +9.7%
Batting Avg vs S&P: +52%
Sortino: +0.72
Stutzer: +0.13
Treynor: +3.22
Sterling: +0.31
Calmar: +0.4
Information Ratio: -0.07
Tracking Error: +39.7%
Stdev Down: +22.3%
Winning Months %: +52%
Losing Months %: +48%
Best 12 Months: +66.9%
Worst 12 Months: -10.2%
Efficiency Ratio: +0.1
Sharpe: +0.42
Stdev Sectors: —
Skewness: +0.32
Kurtosis: -0.18
Upside Potential: +2.76

Quarterly history

Period	Holdings	Total value	Stability	Top holdings
2025-06-30	1	—	0
2025-03-31	2	$52.9M	100	1AR 2REPX Top holdings2025-03-31 1.AR 2.REPX
2024-12-31	2	$79.3M	0	1AR 2REPX Top holdings2024-12-31 1.AR 2.REPX
2024-09-30	2	$72.5M	0	1AR 2REPX Top holdings2024-09-30 1.AR 2.REPX
2024-06-30	2	$81.5M	0	1AR 2REPX Top holdings2024-06-30 1.AR 2.REPX
2024-03-31	2	$122.5M	0	1AR 2REPX Top holdings2024-03-31 1.AR 2.REPX
2023-12-31	2	$120.0M	0	1AR 2REPX Top holdings2023-12-31 1.AR 2.REPX
2023-09-30	3	$144.4M	0	1AR 2REPX 3SWN1EUR Top holdings2023-09-30 1.AR 2.REPX 3.SWN1EUR
2023-06-30	3	$146.6M	0	1AR276665T3SWN1EUR Top holdings2023-06-30 1.AR 2.76665T 3.SWN1EUR
2023-03-31	2	$105.8M	0	1AR 2SWN1EUR Top holdings2023-03-31 1.AR 2.SWN1EUR
2022-12-31	2	$139.7M	0	1AR 2SWN1EUR Top holdings2022-12-31 1.AR 2.SWN1EUR
2022-09-30	2	$169.1M	0	1AR 2SWN1EUR Top holdings2022-09-30 1.AR 2.SWN1EUR
2022-06-30	2	$195.5M	0	1AR 2SWN1EUR Top holdings2022-06-30 1.AR 2.SWN1EUR
2022-03-31	3	$280.8M	0	1AR 2SWN1EUR 3AM Top holdings2022-03-31 1.AR 2.SWN1EUR 3.AM
2021-12-31	3	$205.7M	0	1AR 2SWN1EUR 3AM Top holdings2021-12-31 1.AR 2.SWN1EUR 3.AM
2021-09-30	3	$251.7M	0	1AR 2SWN1EUR 3AM Top holdings2021-09-30 1.AR 2.SWN1EUR 3.AM
2021-06-30	2	$174.0M	83	1AR 2AM Top holdings2021-06-30 1.AR 2.AM
2021-03-31	2	$124.3M	91	1AR 2AM Top holdings2021-03-31 1.AR 2.AM
2020-12-31	2	$83.4M	55	1AR 2AM Top holdings2020-12-31 1.AR 2.AM
2020-09-30	2	$47.2M	7	1AR 2AM Top holdings2020-09-30 1.AR 2.AM
2020-06-30	2	$44.1M	100	1AR 2AM Top holdings2020-06-30 1.AR 2.AM
2020-03-31	2	$14.6M	100	1AR 2AM Top holdings2020-03-31 1.AR 2.AM
2019-12-31	2	$55.9M	23	1AR 2AM Top holdings2019-12-31 1.AR 2.AM
2019-09-30	2	$70.5M	52	1AM 2AR Top holdings2019-09-30 1.AM 2.AR
2019-06-30	3	$120.5M	47	1AM 2AR 3HNRG Top holdings2019-06-30 1.AM 2.AR 3.HNRG
2019-03-31	3	$194.8M	15	1AM 2AR 3HNRG Top holdings2019-03-31 1.AM 2.AR 3.HNRG
2018-12-31	3	$187.1M	53	1AR 2AM 3HNRG Top holdings2018-12-31 1.AR 2.AM 3.HNRG
2018-09-30	3	$323.0M	16	1AR 2AM 3HNRG Top holdings2018-09-30 1.AR 2.AM 3.HNRG
2018-06-30	3	$377.4M	10	1AR 2AM 3HNRG Top holdings2018-06-30 1.AR 2.AM 3.HNRG
2018-03-31	3	$340.6M	11	1AR 2AM 3HNRG Top holdings2018-03-31 1.AR 2.AM 3.HNRG
2017-12-31	3	$355.9M	4	1AR 2AM 3HNRG Top holdings2017-12-31 1.AR 2.AM 3.HNRG
2017-09-30	3	$369.5M	9	1AR 2AM 3HNRG Top holdings2017-09-30 1.AR 2.AM 3.HNRG
2017-06-30	3	$404.1M	51	1AR 2AM 3HNRG Top holdings2017-06-30 1.AR 2.AM 3.HNRG
2017-03-31	2	$261.4M	4	1AR 2HNRG Top holdings2017-03-31 1.AR 2.HNRG
2016-12-31	2	$273.4M	13	1AR 2HNRG Top holdings2016-12-31 1.AR 2.HNRG
2016-09-30	2	$304.2M	7	1AR 2HNRG Top holdings2016-09-30 1.AR 2.HNRG
2016-06-30	2	$284.5M	4	1AR 2HNRG Top holdings2016-06-30 1.AR 2.HNRG
2016-03-31	2	$272.8M	7	1AR 2HNRG Top holdings2016-03-31 1.AR 2.HNRG
2015-12-31	2	$254.0M	0	1AR 2HNRG Top holdings2015-12-31 1.AR 2.HNRG

Filing History

Period	Filed	Type	EDGAR
2025-06-30	2025-08-14	13F-HR	View on EDGAR
2025-03-31	2025-05-15	13F-HR	View on EDGAR
2024-12-31	2025-02-14	13F-HR	View on EDGAR
2024-09-30	2024-11-13	13F-HR	View on EDGAR
2024-06-30	2024-08-13	13F-HR	View on EDGAR
2024-03-31	2024-05-15	13F-HR	View on EDGAR
2023-12-31	2024-02-14	13F-HR	View on EDGAR
2023-09-30	2023-11-14	13F-HR	View on EDGAR
2023-06-30	2023-08-14	13F-HR	View on EDGAR
2023-03-31	2023-05-12	13F-HR	View on EDGAR
2022-12-31	2023-02-14	13F-HR	View on EDGAR
2022-09-30	2022-11-14	13F-HR	View on EDGAR
2022-06-30	2022-08-11	13F-HR	View on EDGAR
2022-03-31	2022-05-16	13F-HR	View on EDGAR
2021-12-31	2022-02-14	13F-HR	View on EDGAR
2021-09-30	2021-11-15	13F-HR	View on EDGAR
2021-06-30	2021-08-16	13F-HR	View on EDGAR
2021-03-31	2021-05-17	13F-HR	View on EDGAR
2020-12-31	2021-02-16	13F-HR	View on EDGAR
2020-09-30	2020-11-16	13F-HR	View on EDGAR
2020-06-30	2020-08-14	13F-HR	View on EDGAR
2020-03-31	2020-05-15	13F-HR	View on EDGAR
2019-12-31	2020-02-14	13F-HR	View on EDGAR
2019-09-30	2019-11-14	13F-HR	View on EDGAR
2019-06-30	2019-08-14	13F-HR	View on EDGAR
2019-03-31	2019-05-15	13F-HR	View on EDGAR
2018-12-31	2019-02-14	13F-HR	View on EDGAR
2018-09-30	2018-11-14	13F-HR	View on EDGAR
2018-06-30	2018-08-14	13F-HR	View on EDGAR
2018-03-31	2018-05-15	13F-HR	View on EDGAR
2017-12-31	2018-02-14	13F-HR	View on EDGAR
2017-09-30	2017-11-14	13F-HR	View on EDGAR
2017-06-30	2017-08-14	13F-HR	View on EDGAR
2017-03-31	2017-05-15	13F-HR	View on EDGAR
2016-12-31	2017-02-14	13F-HR	View on EDGAR
2016-09-30	2016-11-14	13F-HR	View on EDGAR
2016-06-30	2016-08-15	13F-HR	View on EDGAR
2016-03-31	2016-05-16	13F-HR	View on EDGAR
2015-12-31	2016-02-16	13F-HR	View on EDGAR

FAQ

What is Yorktown Energy Partners VIII, L.P. and what type of investor is it?

What are Yorktown Energy Partners VIII, L.P.'s largest equity positions?

Based on the latest 13F filing, Yorktown Energy Partners VIII, L.P.'s top holdings by market value are: 1. Ikena Oncology INC — $0.0

What changes did Yorktown Energy Partners VIII, L.P. make in its most recent portfolio filing?

No notable portfolio changes were recorded for Yorktown Energy Partners VIII, L.P. in the most recent quarter. Holdings appear to have remained relatively stable.

What sectors does Yorktown Energy Partners VIII, L.P. focus on?

Sector breakdown data is not yet available for Yorktown Energy Partners VIII, L.P.. Check back after the next 13F processing cycle.