DUOL vs. ICLN
DUOL (Duolingo, Inc.) is a stock, while ICLN (iShares Global Clean Energy ETF) is Alternative Energy Equities fund tracking the S&P Global Clean Energy Index. Over the past 3 years, DUOL returned -4.96%/yr vs 2.33%/yr for ICLN. At a 0.29 correlation, their price movements are largely independent.
Performance
DUOL vs. ICLN - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, DUOL achieves a -26.87% return, which is significantly lower than ICLN's 16.38% return.
DUOL
- 1D
- -3.01%
- 1M
- 4.66%
- 6M
- -22.59%
- YTD
- -26.87%
- 1Y
- -65.90%
- 3Y*
- -4.96%
- 5Y*
- —
- 10Y*
- —
ICLN
- 1D
- 2.39%
- 1M
- -8.60%
- 6M
- 8.95%
- YTD
- 16.38%
- 1Y
- 43.92%
- 3Y*
- 2.33%
- 5Y*
- -1.69%
- 10Y*
- 9.58%
DUOL vs. ICLN - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
DUOL Duolingo, Inc. | -26.87% | -45.87% | 42.93% | 218.92% | -32.97% | -24.96% |
ICLN iShares Global Clean Energy ETF | 16.38% | 47.05% | -25.72% | -20.41% | -5.43% | -4.18% |
Correlation
The correlation between DUOL and ICLN is -0.00, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.00 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.16 |
Correlation (All Time) Calculated using the full available price history since Jul 28, 2021 | 0.29 |
The correlation between DUOL and ICLN shifts across timeframes, from -0.00 (1 year) to 0.29 (all time), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
DUOL vs. ICLN — Risk / Return Rank
DUOL
ICLN
DUOL vs. ICLN - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Duolingo, Inc. (DUOL) and iShares Global Clean Energy ETF (ICLN). 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 | ICLN | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.52 | ||
| Sortino ratioReturn per unit of downside risk | -3.72 | ||
| Omega ratioGain probability vs. loss probability | 0.79 | 1.25 | -0.46 |
| Calmar ratioReturn relative to maximum drawdown | -0.86 | 2.06 | -2.92 |
| Martin ratioReturn relative to average drawdown | -1.18 | 7.12 | -8.30 |
Loading charts...
Drawdowns
DUOL vs. ICLN - Drawdown Comparison
The maximum DUOL drawdown since its inception was -83.35%, roughly equal to the maximum ICLN drawdown of -87.15%. Use the drawdown chart below to compare losses from any high point for DUOL and ICLN.
Loading charts...
Drawdown Indicators
| DUOL | ICLN | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -83.35% | -87.15% | +3.80% |
Max Drawdown (1Y)Largest decline over 1 year | -76.96% | -21.37% | -55.59% |
Max Drawdown (3Y)Largest decline over 3 years | -83.35% | -43.18% | -40.17% |
Max Drawdown (5Y)Largest decline over 5 years | — | -57.16% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -66.75% | — |
Current DrawdownCurrent decline from peak | -76.26% | -47.93% | -28.33% |
Average DrawdownAverage peak-to-trough decline | -36.42% | -66.47% | +30.05% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 55.86% | 6.19% | +49.67% |
Volatility
DUOL vs. ICLN - Volatility Comparison
Duolingo, Inc. (DUOL) has a higher volatility of 17.55% compared to iShares Global Clean Energy ETF (ICLN) at 11.17%. This indicates that DUOL's price experiences larger fluctuations and is considered to be riskier than ICLN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| DUOL | ICLN | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 17.55% | 11.17% | +6.38% |
Volatility (6M)Calculated over the trailing 6-month period | 43.35% | 24.42% | +18.93% |
Volatility (1Y)Calculated over the trailing 1-year period | 64.37% | 29.53% | +34.84% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 66.12% | 27.90% | +38.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 66.12% | 27.41% | +38.71% |
Dividends
DUOL vs. ICLN - Dividend Comparison
DUOL has not paid dividends to shareholders, while ICLN's dividend yield for the trailing twelve months is around 0.97%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DUOL Duolingo, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
ICLN iShares Global Clean Energy ETF | 0.97% | 1.63% | 1.85% | 1.59% | 0.89% | 1.18% | 0.34% | 1.36% | 2.77% | 2.49% | 3.88% | 2.36% |
Frequently Asked Questions
DUOL and ICLN have a correlation of -0.00, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
DUOL has higher volatility (17.55%) compared to ICLN (11.17%). In terms of maximum drawdown, DUOL dropped -83.35% vs ICLN's -87.15%.
ICLN currently has the higher Sharpe Ratio (1.49 vs -1.03), 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.
Find the right allocation for DUOL and ICLN
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer