ALT vs. METCB

Last updated Aug 1, 2026

ALT (Altimmune, Inc.) and METCB (Ramaco Resources Inc.) are both stocks. ALT operates in Biotechnology (Healthcare), while METCB operates in Coking Coal (Basic Materials). Over the past 3 years, ALT returned -3.60%/yr vs -14.64%/yr for METCB. Their 0.13 correlation means their historical movements had little consistent relationship.

Performance

ALT vs. METCB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Altimmune, Inc. (ALT) and Ramaco Resources Inc. (METCB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ALT achieves a -21.33% return, which is significantly higher than METCB's -43.26% return.

ALT

• 1D: -4.70%
• 1M: -10.13%
• 6M: -49.29%
• YTD: -21.33%
• 1Y: -21.33%
• 3Y*: -3.60%
• 5Y*: -20.72%
• 10Y*: -29.17%
• ALL TIME*: -19.35%

METCB

• 1D: -1.36%
• 1M: -16.22%
• 6M: -49.18%
• YTD: -43.26%
• 1Y: -46.67%
• 3Y*: -14.64%
• 5Y*: —
• 10Y*: —
• ALL TIME*: -2.76%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ALT Altimmune, Inc.	$14.41M	$12.19M	$11.44M
METCB Ramaco Resources Inc.	$372.28K	$404.83K	$506.97K

ALT vs. METCB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ALT Altimmune, Inc.	-21.33%	-49.93%	-35.91%	168.50%
METCB Ramaco Resources Inc.	-43.26%	25.90%	-17.35%	55.26%

Correlation

The correlation between ALT and METCB is 0.16, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.16
Correlation (3Y) Balances recent behavior with more history.	0.13
Correlation (All Time) Calculated using the full available price history since Jun 22, 2023	0.13

Fundamentals

Market Cap ALT : $250.65M METCB : $555.58M
EPS ALT : -$0.87 METCB : -$1.08
PS Ratio ALT : 8.27K METCB : 0.70
Total Revenue (TTM) ALT : $36.00K METCB : $523.58M
Gross Profit (TTM) ALT : -$14.92M METCB : -$7.12M
EBITDA (TTM) ALT : -$93.48M METCB : $724.00K

Return for Risk

ALT vs. METCB — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ALT

ALT Risk / Return Rank: 31
ALT Sharpe Ratio Rank: 30
ALT Sortino Ratio Rank: 32
ALT Omega Ratio Rank: 32
ALT Calmar Ratio Rank: 31
ALT Martin Ratio Rank: 31

METCB

METCB Risk / Return Rank: 16
METCB Sharpe Ratio Rank: 14
METCB Sortino Ratio Rank: 15
METCB Omega Ratio Rank: 17
METCB Calmar Ratio Rank: 16
METCB Martin Ratio Rank: 16

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ALT vs. METCB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Altimmune, Inc. (ALT) and Ramaco Resources Inc. (METCB). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	ALT	METCB	Difference
Sharpe ratio: Return per unit of total volatility	-0.34	-0.67	+0.34
Sortino ratio: Return per unit of downside risk	-0.04	-0.83	+0.79
Omega ratio: Gain probability vs. loss probability	0.99	0.91	+0.08
Calmar ratio: Return relative to maximum drawdown	-0.40	-0.73	+0.33
Martin ratio: Return relative to average drawdown	-0.67	-1.19	+0.52

ALT vs. METCB - Sharpe Ratio Comparison

The current ALT Sharpe Ratio is -0.34, which is higher than the METCB Sharpe Ratio of -0.67. The chart below compares the historical Sharpe Ratios of ALT and METCB, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ALT vs. METCB - Drawdown Comparison

The maximum ALT drawdown since its inception was -99.63%, which is greater than METCB's maximum drawdown of -69.42%. Use the drawdown chart below to compare losses from any high point for ALT and METCB.

Drawdown Indicators

	ALT	METCB	Difference
Max Drawdown Largest peak-to-trough decline	-99.63%	-69.42%	-30.21%
Max Drawdown (1Y) Largest decline over 1 year	-58.09%	-69.42%	+11.33%
Max Drawdown (3Y) Largest decline over 3 years	-81.25%	-69.42%	-11.83%
Max Drawdown (5Y) Largest decline over 5 years	-90.45%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-99.63%	—	—
Current Drawdown Current decline from peak	-99.31%	-69.23%	-30.08%
Average Drawdown Average peak-to-trough decline	-79.02%	-30.72%	-48.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	34.45%	42.37%	-7.92%

Volatility

ALT vs. METCB - Volatility Comparison

The current volatility for Altimmune, Inc. (ALT) is 12.15%, while Ramaco Resources Inc. (METCB) has a volatility of 18.75%. This indicates that ALT experiences smaller price fluctuations and is considered to be less risky than METCB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ALT	METCB	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.15%	18.75%	-6.60%
Volatility (6M) Calculated over the trailing 6-month period	45.11%	45.28%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	68.95%	74.84%	-5.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	92.48%	66.35%	+26.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	149.74%	66.35%	+83.39%

Dividends

ALT vs. METCB - Dividend Comparison

Neither ALT nor METCB has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
ALT Altimmune, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	1,462.31%
METCB Ramaco Resources Inc.	0.00%	3.18%	9.36%	3.11%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both ALT and METCB in my portfolio?

ALT and METCB have a correlation of 0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ALT or METCB?

METCB has higher volatility (18.75%) compared to ALT (12.15%). In terms of maximum drawdown, ALT dropped -99.63% vs METCB's -69.42%.

Which has better risk-adjusted returns?

ALT currently has the higher Sharpe Ratio (-0.34 vs -0.67), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.