JOBY vs. ASTS

Last updated Jun 13, 2026

JOBY (Joby Aviation, Inc.) and ASTS (AST SpaceMobile, Inc.) are both stocks. JOBY operates in Airports & Air Services (Industrials), while ASTS operates in Communication Equipment (Technology). Over the past 3 years, JOBY returned 5.42%/yr vs 140.29%/yr for ASTS. At a 0.46 correlation, their price movements are largely independent.

Performance

JOBY vs. ASTS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Joby Aviation, Inc. (JOBY) and AST SpaceMobile, Inc. (ASTS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, JOBY achieves a -30.68% return, which is significantly lower than ASTS's 13.47% return.

JOBY

• 1D: -2.24%
• 1M: -17.27%
• YTD: -30.68%
• 6M: -38.38%
• 1Y: 3.16%
• 3Y*: 5.42%
• 5Y*: —
• 10Y*: —

ASTS

• 1D: -15.53%
• 1M: 10.16%
• YTD: 13.47%
• 6M: 7.44%
• 1Y: 123.21%
• 3Y*: 140.29%
• 5Y*: 51.99%
• 10Y*: —

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

JOBY vs. ASTS - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
JOBY Joby Aviation, Inc.	-30.68%	62.36%	22.26%	98.51%	-54.11%	-31.26%
ASTS AST SpaceMobile, Inc.	13.47%	244.22%	249.92%	25.10%	-39.29%	-23.87%

Correlation

The correlation between JOBY and ASTS is 0.57, 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	0.57
Correlation (3Y) Calculated over the trailing 3-year period	0.48
Correlation (All Time) Calculated using the full available price history since Aug 11, 2021	0.46

The correlation between JOBY and ASTS shifts across timeframes, from 0.46 (all time) to 0.57 (1 year), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap JOBY : $8.63B ASTS : $23.96B
EPS JOBY : -$1.10 ASTS : -$1.84
PS Ratio JOBY : 102.48 ASTS : 257.48
PB Ratio JOBY : 4.41 ASTS : 9.00
Total Revenue (TTM) JOBY : $77.67M ASTS : $84.94M
Gross Profit (TTM) JOBY : $8.72M ASTS : -$22.93M
EBITDA (TTM) JOBY : -$1.05B ASTS : -$536.80M

Return for Risk

JOBY vs. ASTS — Risk / Return Rank

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

JOBY

JOBY Risk / Return Rank: 45
JOBY Sharpe Ratio Rank: 44
JOBY Sortino Ratio Rank: 48
JOBY Omega Ratio Rank: 46
JOBY Calmar Ratio Rank: 44
JOBY Martin Ratio Rank: 43

ASTS

ASTS Risk / Return Rank: 77
ASTS Sharpe Ratio Rank: 77
ASTS Sortino Ratio Rank: 77
ASTS Omega Ratio Rank: 73
ASTS Calmar Ratio Rank: 81
ASTS Martin Ratio Rank: 77

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.

JOBY vs. ASTS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Joby Aviation, Inc. (JOBY) and AST SpaceMobile, Inc. (ASTS). 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.

	JOBY	ASTS	Difference
Sharpe ratio: Return per unit of total volatility	0.04	1.17	-1.13
Sortino ratio: Return per unit of downside risk	0.67	1.99	-1.31
Omega ratio: Gain probability vs. loss probability	1.07	1.23	-0.16
Calmar ratio: Return relative to maximum drawdown	0.05	2.60	-2.55
Martin ratio: Return relative to average drawdown	0.09	5.06	-4.98

JOBY vs. ASTS - Sharpe Ratio Comparison

The current JOBY Sharpe Ratio is 0.04, which is lower than the ASTS Sharpe Ratio of 1.17. The chart below compares the historical Sharpe Ratios of JOBY and ASTS, 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

JOBY vs. ASTS - Drawdown Comparison

The maximum JOBY drawdown since its inception was -76.27%, smaller than the maximum ASTS drawdown of -85.57%. Use the drawdown chart below to compare losses from any high point for JOBY and ASTS.

Drawdown Indicators

	JOBY	ASTS	Difference
Max Drawdown Largest peak-to-trough decline	-76.27%	-85.57%	+9.30%
Max Drawdown (1Y) Largest decline over 1 year	-61.06%	-47.69%	-13.37%
Max Drawdown (3Y) Largest decline over 3 years	-61.06%	-70.66%	+9.60%
Max Drawdown (5Y) Largest decline over 5 years	—	-85.57%	—
Current Drawdown Current decline from peak	-55.13%	-38.08%	-17.05%
Average Drawdown Average peak-to-trough decline	-50.36%	-40.51%	-9.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	36.83%	24.42%	+12.41%

Volatility

JOBY vs. ASTS - Volatility Comparison

The current volatility for Joby Aviation, Inc. (JOBY) is 22.37%, while AST SpaceMobile, Inc. (ASTS) has a volatility of 41.20%. This indicates that JOBY experiences smaller price fluctuations and is considered to be less risky than ASTS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	JOBY	ASTS	Difference
Volatility (1M) Calculated over the trailing 1-month period	22.37%	41.20%	-18.83%
Volatility (6M) Calculated over the trailing 6-month period	51.20%	85.03%	-33.83%
Volatility (1Y) Calculated over the trailing 1-year period	78.50%	105.98%	-27.48%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	80.72%	109.52%	-28.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	80.72%	111.00%	-30.28%

Dividends

JOBY vs. ASTS - Dividend Comparison

Neither JOBY nor ASTS has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both JOBY and ASTS in my portfolio?

JOBY and ASTS have a correlation of 0.57, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, JOBY or ASTS?

ASTS has higher volatility (41.20%) compared to JOBY (22.37%). In terms of maximum drawdown, JOBY dropped -76.27% vs ASTS's -85.57%.

Which has better risk-adjusted returns?

ASTS currently has the higher Sharpe Ratio (1.17 vs 0.04), 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.