DUOL vs. EOSE

Last updated Aug 1, 2026

DUOL (Duolingo, Inc.) and EOSE (Eos Energy Enterprises Inc) are both stocks. DUOL operates in Software - Application (Technology), while EOSE operates in Electrical Equipment & Parts (Industrials). Over the past 5 years, DUOL returned -0.79%/yr vs -26.28%/yr for EOSE. Their 0.21 correlation means their historical movements had little consistent relationship.

Performance

DUOL vs. EOSE - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Duolingo, Inc. (DUOL) and Eos Energy Enterprises Inc (EOSE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DUOL achieves a -23.19% return, which is significantly higher than EOSE's -70.51% return.

DUOL

• 1D: 0.91%
• 1M: 7.20%
• 6M: 0.56%
• YTD: -23.19%
• 1Y: -60.23%
• 3Y*: -3.98%
• 5Y*: -0.79%
• 10Y*: —
• ALL TIME*: -0.95%

EOSE

• 1D: -6.37%
• 1M: -35.37%
• 6M: -76.91%
• YTD: -70.51%
• 1Y: -38.66%
• 3Y*: 9.70%
• 5Y*: -26.28%
• 10Y*: —
• ALL TIME*: -15.88%

*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)
DUOL Duolingo, Inc.	$135.82M	$130.76M	$177.13M
EOSE Eos Energy Enterprises Inc	$90.46M	$112.93M	$173.62M

DUOL vs. EOSE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
DUOL Duolingo, Inc.	-23.19%	-45.87%	42.93%	218.92%	-32.97%	-24.96%
EOSE Eos Energy Enterprises Inc	-70.51%	135.80%	345.87%	-26.35%	-80.32%	-52.88%

Correlation

The correlation between DUOL and EOSE 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.	0.16
Correlation (5Y) Shows whether the relationship held over a longer period.	0.21
Correlation (All Time) Calculated using the full available price history since Jul 28, 2021	0.21

Fundamentals

Market Cap DUOL : $6.28B EOSE : $978.73M
EPS DUOL : $13.23 EOSE : -$1.33
PS Ratio DUOL : 3.92 EOSE : 7.55
Total Revenue (TTM) DUOL : $1.10B EOSE : $160.71M
Gross Profit (TTM) DUOL : $798.46M EOSE : -$163.73M
EBITDA (TTM) DUOL : $167.30M EOSE : -$858.77M

Return for Risk

DUOL vs. EOSE — Risk / Return Rank

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

DUOL

DUOL Risk / Return Rank: 11
DUOL Sharpe Ratio Rank: 6
DUOL Sortino Ratio Rank: 7
DUOL Omega Ratio Rank: 8
DUOL Calmar Ratio Rank: 13
DUOL Martin Ratio Rank: 21

EOSE

EOSE Risk / Return Rank: 32
EOSE Sharpe Ratio Rank: 29
EOSE Sortino Ratio Rank: 38
EOSE Omega Ratio Rank: 38
EOSE Calmar Ratio Rank: 27
EOSE Martin Ratio Rank: 27

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.

DUOL vs. EOSE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Duolingo, Inc. (DUOL) and Eos Energy Enterprises Inc (EOSE). 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.

	DUOL	EOSE	Difference
Sharpe ratio: Return per unit of total volatility	-0.94	-0.35	-0.58
Sortino ratio: Return per unit of downside risk	-1.43	0.19	-1.62
Omega ratio: Gain probability vs. loss probability	0.83	1.02	-0.20
Calmar ratio: Return relative to maximum drawdown	-0.80	-0.49	-0.31
Martin ratio: Return relative to average drawdown	-1.06	-0.85	-0.21

DUOL vs. EOSE - Sharpe Ratio Comparison

The current DUOL Sharpe Ratio is -0.94, which is lower than the EOSE Sharpe Ratio of -0.35. The chart below compares the historical Sharpe Ratios of DUOL and EOSE, 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

DUOL vs. EOSE - Drawdown Comparison

The maximum DUOL drawdown since its inception was -83.35%, smaller than the maximum EOSE drawdown of -97.88%. Use the drawdown chart below to compare losses from any high point for DUOL and EOSE.

Drawdown Indicators

	DUOL	EOSE	Difference
Max Drawdown Largest peak-to-trough decline	-83.35%	-97.88%	+14.53%
Max Drawdown (1Y) Largest decline over 1 year	-76.96%	-83.64%	+6.68%
Max Drawdown (3Y) Largest decline over 3 years	-83.35%	-83.64%	+0.29%
Max Drawdown (5Y) Largest decline over 5 years	-83.35%	-95.94%	+12.59%
Current Drawdown Current decline from peak	-75.07%	-88.90%	+13.83%
Average Drawdown Average peak-to-trough decline	-36.82%	-72.61%	+35.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	57.85%	47.89%	+9.96%

Volatility

DUOL vs. EOSE - Volatility Comparison

The current volatility for Duolingo, Inc. (DUOL) is 18.21%, while Eos Energy Enterprises Inc (EOSE) has a volatility of 26.01%. This indicates that DUOL experiences smaller price fluctuations and is considered to be less risky than EOSE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DUOL	EOSE	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.21%	26.01%	-7.80%
Volatility (6M) Calculated over the trailing 6-month period	43.82%	91.98%	-48.16%
Volatility (1Y) Calculated over the trailing 1-year period	65.41%	115.27%	-49.86%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	66.14%	117.84%	-51.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	66.11%	112.61%	-46.50%

Dividends

DUOL vs. EOSE - Dividend Comparison

Neither DUOL nor EOSE has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both DUOL and EOSE in my portfolio?

DUOL and EOSE 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, DUOL or EOSE?

EOSE has higher volatility (26.01%) compared to DUOL (18.21%). In terms of maximum drawdown, DUOL dropped -83.35% vs EOSE's -97.88%.

Which has better risk-adjusted returns?

EOSE currently has the higher Sharpe Ratio (-0.35 vs -0.94), 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.