PLUG vs. NIO

Last updated Aug 1, 2026

PLUG (Plug Power Inc.) and NIO (NIO Inc.) are both stocks. PLUG operates in Electrical Equipment & Parts (Industrials), while NIO operates in Auto Manufacturers (Consumer Cyclical). Over the past 5 years, PLUG returned -40.35%/yr vs -35.78%/yr for NIO. Their 0.41 correlation means their historical movements had little consistent relationship.

Performance

PLUG vs. NIO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Plug Power Inc. (PLUG) and NIO Inc. (NIO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PLUG achieves a 4.57% return, which is significantly higher than NIO's -4.31% return.

PLUG

• 1D: -1.44%
• 1M: -21.97%
• 6M: -2.60%
• YTD: 4.57%
• 1Y: 47.14%
• 3Y*: -45.55%
• 5Y*: -40.35%
• 10Y*: 1.82%
• ALL TIME*: -14.96%

NIO

• 1D: 0.83%
• 1M: 1.88%
• 6M: 3.83%
• YTD: -4.31%
• 1Y: -2.59%
• 3Y*: -30.65%
• 5Y*: -35.78%
• 10Y*: —
• ALL TIME*: -2.59%

*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)
NIO NIO Inc.	$108.54M	$112.03M	$170.52M
PLUG Plug Power Inc.	$96.68M	$108.41M	$203.80M

PLUG vs. NIO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
PLUG Plug Power Inc.	4.57%	-7.51%	-52.67%	-63.62%	-56.18%	-16.75%	973.10%	154.84%	-29.55%
NIO NIO Inc.	-4.31%	16.97%	-51.93%	-6.97%	-69.22%	-35.00%	1,112.44%	-36.89%	6.17%

Correlation

The correlation between PLUG and NIO is 0.17, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.17
Correlation (3Y) Balances recent behavior with more history.	0.33
Correlation (5Y) Shows whether the relationship held over a longer period.	0.45
Correlation (All Time) Calculated using the full available price history since Sep 12, 2018	0.41

Over the past year, the correlation between PLUG and NIO has dropped to 0.17 - well below their long-term average of 0.41, suggesting their price drivers have been diverging.

Fundamentals

Market Cap PLUG : $2.87B NIO : $12.11B
EPS PLUG : -$1.36 NIO : -CN¥3.65
PS Ratio PLUG : 3.44 NIO : 0.81
PB Ratio PLUG : 3.82 NIO : 18.83
Total Revenue (TTM) PLUG : $739.76M NIO : CN¥100.51B
Gross Profit (TTM) PLUG : -$189.79M NIO : CN¥15.77B
EBITDA (TTM) PLUG : -$745.89M NIO : -CN¥7.54B

Return for Risk

PLUG vs. NIO — Risk / Return Rank

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

PLUG

PLUG Risk / Return Rank: 62
PLUG Sharpe Ratio Rank: 59
PLUG Sortino Ratio Rank: 70
PLUG Omega Ratio Rank: 63
PLUG Calmar Ratio Rank: 60
PLUG Martin Ratio Rank: 57

NIO

NIO Risk / Return Rank: 44
NIO Sharpe Ratio Rank: 44
NIO Sortino Ratio Rank: 45
NIO Omega Ratio Rank: 43
NIO Calmar Ratio Rank: 45
NIO Martin Ratio Rank: 45

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.

PLUG vs. NIO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Plug Power Inc. (PLUG) and NIO Inc. (NIO). 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.

	PLUG	NIO	Difference
Sharpe ratio: Return per unit of total volatility	0.38	0.00	+0.38
Sortino ratio: Return per unit of downside risk	1.45	0.46	+0.99
Omega ratio: Gain probability vs. loss probability	1.15	1.05	+0.10
Calmar ratio: Return relative to maximum drawdown	0.66	0.00	+0.66
Martin ratio: Return relative to average drawdown	1.03	0.01	+1.02

PLUG vs. NIO - Sharpe Ratio Comparison

The current PLUG Sharpe Ratio is 0.38, which is higher than the NIO Sharpe Ratio of 0.00. The chart below compares the historical Sharpe Ratios of PLUG and NIO, 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

PLUG vs. NIO - Drawdown Comparison

The maximum PLUG drawdown since its inception was -99.99%, which is greater than NIO's maximum drawdown of -95.00%. Use the drawdown chart below to compare losses from any high point for PLUG and NIO.

Drawdown Indicators

	PLUG	NIO	Difference
Max Drawdown Largest peak-to-trough decline	-99.99%	-95.00%	-4.99%
Max Drawdown (1Y) Largest decline over 1 year	-56.66%	-43.73%	-12.93%
Max Drawdown (3Y) Largest decline over 3 years	-93.95%	-78.81%	-15.14%
Max Drawdown (5Y) Largest decline over 5 years	-98.43%	-93.11%	-5.32%
Max Drawdown (10Y) Largest decline over 10 years	-99.04%	—	—
Current Drawdown Current decline from peak	-99.86%	-92.23%	-7.63%
Average Drawdown Average peak-to-trough decline	-96.23%	-68.31%	-27.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	36.27%	28.31%	+7.96%

Volatility

PLUG vs. NIO - Volatility Comparison

Plug Power Inc. (PLUG) has a higher volatility of 18.01% compared to NIO Inc. (NIO) at 10.44%. This indicates that PLUG's price experiences larger fluctuations and is considered to be riskier than NIO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PLUG	NIO	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.01%	10.44%	+7.57%
Volatility (6M) Calculated over the trailing 6-month period	60.89%	39.90%	+20.99%
Volatility (1Y) Calculated over the trailing 1-year period	98.33%	60.88%	+37.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	94.53%	71.11%	+23.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	89.64%	86.06%	+3.58%

Dividends

PLUG vs. NIO - Dividend Comparison

Neither PLUG nor NIO has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both PLUG and NIO in my portfolio?

PLUG and NIO have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PLUG or NIO?

PLUG has higher volatility (18.01%) compared to NIO (10.44%). In terms of maximum drawdown, PLUG dropped -99.99% vs NIO's -95.00%.

Which has better risk-adjusted returns?

PLUG currently has the higher Sharpe Ratio (0.38 vs 0.00), 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.