ENPH vs. FSLR

Last updated Jun 23, 2026

ENPH (Enphase Energy, Inc.) and FSLR (First Solar, Inc.) are both stocks. Both operate in the Solar industry within the Technology sector. Over the past 10 years, ENPH returned 38.08%/yr vs 19.05%/yr for FSLR. At a 0.48 correlation, their price movements are largely independent.

Performance

ENPH vs. FSLR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Enphase Energy, Inc. (ENPH) and First Solar, Inc. (FSLR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ENPH achieves a 63.53% return, which is significantly higher than FSLR's 0.72% return. Over the past 10 years, ENPH has outperformed FSLR with an annualized return of 38.08%, while FSLR has yielded a comparatively lower 19.05% annualized return.

ENPH

• 1D: 0.25%
• 1M: -18.15%
• YTD: 63.53%
• 6M: 56.45%
• 1Y: 46.19%
• 3Y*: -30.88%
• 5Y*: -20.99%
• 10Y*: 38.08%

FSLR

• 1D: 2.10%
• 1M: 2.04%
• YTD: 0.72%
• 6M: -7.55%
• 1Y: 81.46%
• 3Y*: 12.55%
• 5Y*: 26.82%
• 10Y*: 19.05%

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

ENPH vs. FSLR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ENPH Enphase Energy, Inc.	63.53%	-53.33%	-48.02%	-50.13%	44.83%	4.26%	571.53%	452.43%	96.27%	138.61%
FSLR First Solar, Inc.	0.72%	48.22%	2.30%	15.01%	71.86%	-11.89%	76.77%	31.81%	-37.12%	110.41%

Correlation

The correlation between ENPH and FSLR is 0.52, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.52
Correlation (3Y) Calculated over the trailing 3-year period	0.58
Correlation (5Y) Calculated over the trailing 5-year period	0.62
Correlation (10Y) Calculated over the trailing 10-year period	0.53
Correlation (All Time) Calculated using the full available price history since Mar 30, 2012	0.48

The correlation between ENPH and FSLR shifts across timeframes, from 0.48 (all time) to 0.62 (5 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap ENPH : $6.88B FSLR : $28.32B
EPS ENPH : $0.92 FSLR : $15.48
PE Ratio ENPH : 57.20 FSLR : 17.00
PEG Ratio ENPH : 1.31 FSLR : 0.41
PS Ratio ENPH : 4.99 FSLR : 5.22
PB Ratio ENPH : 6.24 FSLR : 2.87
Total Revenue (TTM) ENPH : $1.40B FSLR : $5.42B
Gross Profit (TTM) ENPH : $619.16M FSLR : $2.26B
EBITDA (TTM) ENPH : $189.48M FSLR : $2.15B

Return for Risk

ENPH vs. FSLR — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

ENPH

ENPH Risk / Return Rank: 64
ENPH Sharpe Ratio Rank: 61
ENPH Sortino Ratio Rank: 66
ENPH Omega Ratio Rank: 64
ENPH Calmar Ratio Rank: 65
ENPH Martin Ratio Rank: 63

FSLR

FSLR Risk / Return Rank: 78
FSLR Sharpe Ratio Rank: 82
FSLR Sortino Ratio Rank: 79
FSLR Omega Ratio Rank: 78
FSLR Calmar Ratio Rank: 79
FSLR Martin Ratio Rank: 76

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.

ENPH vs. FSLR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Enphase Energy, Inc. (ENPH) and First Solar, Inc. (FSLR). 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.

	ENPH	FSLR	Difference
Sharpe ratio: Return per unit of total volatility	0.55	1.48	-0.92
Sortino ratio: Return per unit of downside risk	1.47	2.13	-0.66
Omega ratio: Gain probability vs. loss probability	1.18	1.27	-0.09
Calmar ratio: Return relative to maximum drawdown	1.17	2.33	-1.16
Martin ratio: Return relative to average drawdown	2.16	4.93	-2.77

ENPH vs. FSLR - Sharpe Ratio Comparison

The current ENPH Sharpe Ratio is 0.55, which is lower than the FSLR Sharpe Ratio of 1.48. The chart below compares the historical Sharpe Ratios of ENPH and FSLR, 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

ENPH vs. FSLR - Drawdown Comparison

The maximum ENPH drawdown since its inception was -95.97%, roughly equal to the maximum FSLR drawdown of -96.22%. Use the drawdown chart below to compare losses from any high point for ENPH and FSLR.

Drawdown Indicators

	ENPH	FSLR	Difference
Max Drawdown Largest peak-to-trough decline	-95.97%	-96.22%	+0.25%
Max Drawdown (1Y) Largest decline over 1 year	-39.65%	-35.10%	-4.55%
Max Drawdown (3Y) Largest decline over 3 years	-86.23%	-59.97%	-26.26%
Max Drawdown (5Y) Largest decline over 5 years	-92.23%	-59.97%	-32.26%
Max Drawdown (10Y) Largest decline over 10 years	-92.23%	-61.26%	-30.97%
Current Drawdown Current decline from peak	-84.40%	-17.33%	-67.07%
Average Drawdown Average peak-to-trough decline	-50.62%	-63.15%	+12.53%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.49%	16.58%	+4.91%

Volatility

ENPH vs. FSLR - Volatility Comparison

Enphase Energy, Inc. (ENPH) has a higher volatility of 35.73% compared to First Solar, Inc. (FSLR) at 22.46%. This indicates that ENPH's price experiences larger fluctuations and is considered to be riskier than FSLR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ENPH	FSLR	Difference
Volatility (1M) Calculated over the trailing 1-month period	35.73%	22.46%	+13.27%
Volatility (6M) Calculated over the trailing 6-month period	67.25%	41.61%	+25.64%
Volatility (1Y) Calculated over the trailing 1-year period	84.30%	55.60%	+28.70%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	70.38%	54.14%	+16.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	78.34%	50.90%	+27.44%

Dividends

ENPH vs. FSLR - Dividend Comparison

Neither ENPH nor FSLR has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

ENPH vs. FSLR - Profitability Comparison

The chart below illustrates the profitability comparison between Enphase Energy, Inc. and First Solar, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ENPH - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Enphase Energy, Inc. reported a gross profit of 100.39M and revenue of 282.90M. Therefore, the gross margin over that period was 35.5%.

FSLR - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, First Solar, Inc. reported a gross profit of 486.13M and revenue of 1.04B. Therefore, the gross margin over that period was 46.6%.

ENPH - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Enphase Energy, Inc. reported an operating income of -29.64M and revenue of 282.90M, resulting in an operating margin of -10.5%.

FSLR - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, First Solar, Inc. reported an operating income of 345.30M and revenue of 1.04B, resulting in an operating margin of 33.1%.

ENPH - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Enphase Energy, Inc. reported a net income of -20.31M and revenue of 282.90M, resulting in a net margin of -7.2%.

FSLR - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, First Solar, Inc. reported a net income of 346.62M and revenue of 1.04B, resulting in a net margin of 33.2%.

Frequently Asked Questions

Can I hold both ENPH and FSLR in my portfolio?

ENPH and FSLR have a correlation of 0.52, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ENPH or FSLR?

ENPH has higher volatility (35.73%) compared to FSLR (22.46%). In terms of maximum drawdown, ENPH dropped -95.97% vs FSLR's -96.22%.

Which has better risk-adjusted returns?

FSLR currently has the higher Sharpe Ratio (1.48 vs 0.55), 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.