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KOS vs. MRO
Performance
Return for Risk
Dividends
Drawdowns
Volatility
Financials

KOS vs. MRO

Last updated Apr 1, 2026

Compare and contrast key facts about Kosmos Energy Ltd. (KOS) and Marathon Oil Corporation (MRO).

Performance

KOS vs. MRO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Kosmos Energy Ltd. (KOS) and Marathon Oil Corporation (MRO). The values are adjusted to include any dividend payments, if applicable.

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KOS vs. MRO - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
KOS
Kosmos Energy Ltd.		206.37%-73.47%-49.03%5.50%83.82%47.23%-58.06%44.22%-40.58%-2.28%
MRO
Marathon Oil Corporation		0.00%0.00%20.15%-9.29%66.91%149.77%-50.38%-3.93%-14.37%-0.82%

Fundamentals

Total Revenue (TTM)

KOS:

$1.29B

MRO:

$6.58B

Gross Profit (TTM)

KOS:

-$2.16M

MRO:

$3.50B

EBITDA (TTM)

KOS:

$95.48M

MRO:

$4.23B

Returns By Period

KOS

1D
-6.08%
1M
19.31%
YTD
206.37%
6M
67.47%
1Y
21.93%
3Y*
-27.97%
5Y*
-3.08%
10Y*
-6.35%

MRO

1D
—
1M
—
YTD
—
6M
—
1Y
—
3Y*
—
5Y*
—
10Y*
—
*Multi-year figures are annualized to reflect compound growth (CAGR)

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Kosmos Energy Ltd.

Marathon Oil Corporation

Often compared with KOS:
KOS vs. VGRKOS vs. JABLXKOS vs. VOOKOS vs. FANGKOS vs. KRKOS vs. SCHDKOS vs. VT
Often compared with MRO:
MRO vs. MPCMRO vs. SCHWMRO vs. CTRAMRO vs. BPMRO vs. OXYMRO vs. XOMMRO vs. NOV

Return for Risk

KOS vs. MRO — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
KOS
KOS Risk / Return Rank: 5353
Overall Rank
KOS Sharpe Ratio Rank: 5151
Sharpe Ratio Rank
KOS Sortino Ratio Rank: 5757
Sortino Ratio Rank
KOS Omega Ratio Rank: 5454
Omega Ratio Rank
KOS Calmar Ratio Rank: 5252
Calmar Ratio Rank
KOS Martin Ratio Rank: 5151
Martin Ratio Rank
MRO
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

KOS vs. MRO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Kosmos Energy Ltd. (KOS) and Marathon Oil Corporation (MRO). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

KOSMRODifference

Sharpe ratio

Return per unit of total volatility

0.23

—

—

Sortino ratio

Return per unit of downside risk

1.05

—

—

Omega ratio

Gain probability vs. loss probability

1.12

—

—

Calmar ratio

Return relative to maximum drawdown

0.40

—

—

Martin ratio

Return relative to average drawdown

0.77

—

—

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

KOS vs. MRO - Sharpe Ratio Comparison

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Sharpe Ratios by Period

KOSMRODifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

0.23

—

—

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

-0.04

—

—

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

-0.08

—

—

Sharpe Ratio (All Time)

Calculated using the full available price history

-0.17

—

—

Correlation

The correlation between KOS and MRO is 0.58, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

KOS vs. MRO - Dividend Comparison

Neither KOS nor MRO has paid dividends to shareholders.

TTM20252024202320222021202020192018201720162015
KOS
Kosmos Energy Ltd.		0.00%0.00%0.00%0.00%0.00%0.00%1.92%3.17%0.00%0.00%0.00%0.00%
MRO
Marathon Oil Corporation		0.00%0.00%1.54%1.70%1.18%1.10%1.20%1.47%1.39%1.18%1.16%5.40%

Drawdowns

KOS vs. MRO - Drawdown Comparison

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Drawdown Indicators

KOSMRODifference

Max Drawdown

Largest peak-to-trough decline

-97.11%

—

—

Max Drawdown (1Y)

Largest decline over 1 year

-63.57%

—

—

Max Drawdown (5Y)

Largest decline over 5 years

-89.82%

—

—

Max Drawdown (10Y)

Largest decline over 10 years

-94.28%

—

—

Current Drawdown

Current decline from peak

-84.86%

—

—

Average Drawdown

Average peak-to-trough decline

-64.30%

—

—

Ulcer Index

Depth and duration of drawdowns from previous peaks

32.70%

—

—

Volatility

KOS vs. MRO - Volatility Comparison

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Volatility by Period

KOSMRODifference

Volatility (1M)

Calculated over the trailing 1-month period

32.03%

—

—

Volatility (6M)

Calculated over the trailing 6-month period

70.53%

—

—

Volatility (1Y)

Calculated over the trailing 1-year period

95.15%

—

—

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

70.35%

—

—

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

76.72%

—

—

Financials

KOS vs. MRO - Financials Comparison

This section allows you to compare key financial metrics between Kosmos Energy Ltd. and Marathon Oil Corporation. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.

Quarterly
Annual

Total Revenue: Total amount of money received from sales and other business activities

0.00500.00M1.00B1.50B2.00BAprilJulyOctober2022AprilJulyOctober2023AprilJulyOctober2024AprilJulyOctober2025AprilJulyOctober
296.47M
1.79B
(KOS) Total Revenue
(MRO) Total Revenue
Values in USD except per share items