WDC vs. ASTS

Last updated Jun 9, 2026

WDC (Western Digital Corporation) and ASTS (AST SpaceMobile, Inc.) are both stocks. WDC operates in Computer Hardware (Technology), while ASTS operates in Telecom Services (Communication Services). Over the past 5 years, WDC returned 56.39%/yr vs 54.02%/yr for ASTS. At a 0.24 correlation, their price movements are largely independent.

Performance

WDC vs. ASTS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Western Digital Corporation (WDC) 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, WDC achieves a 206.10% return, which is significantly higher than ASTS's 26.75% return.

WDC

• 1D: 2.97%
• 1M: 9.81%
• YTD: 206.10%
• 6M: 210.59%
• 1Y: 852.85%
• 3Y*: 160.14%
• 5Y*: 56.39%
• 10Y*: 32.86%

ASTS

• 1D: -1.65%
• 1M: 22.66%
• YTD: 26.75%
• 6M: 24.41%
• 1Y: 195.16%
• 3Y*: 152.04%
• 5Y*: 54.02%
• 10Y*: —

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

WDC vs. ASTS - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
WDC Western Digital Corporation	206.10%	283.68%	13.86%	65.99%	-51.62%	17.73%	-10.89%	17.91%
ASTS AST SpaceMobile, Inc.	26.75%	244.22%	249.92%	25.10%	-39.29%	-41.53%	37.59%	1.02%

Correlation

The correlation between WDC and ASTS is 0.25, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.25
Correlation (3Y) Calculated over the trailing 3-year period	0.24
Correlation (5Y) Calculated over the trailing 5-year period	0.28
Correlation (All Time) Calculated using the full available price history since Nov 4, 2019	0.24

Fundamentals

EPS WDC : $23.29 ASTS : -$1.84
PS Ratio WDC : 12.46 ASTS : 287.63
Total Revenue (TTM) WDC : $11.78B ASTS : $84.94M
Gross Profit (TTM) WDC : $5.35B ASTS : -$22.93M
EBITDA (TTM) WDC : $10.88B ASTS : -$536.80M

Return for Risk

WDC vs. ASTS — Risk / Return Rank

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

WDC

WDC Risk / Return Rank: 99
WDC Sharpe Ratio Rank: 100
WDC Sortino Ratio Rank: 99
WDC Omega Ratio Rank: 99
WDC Calmar Ratio Rank: 100
WDC Martin Ratio Rank: 100

ASTS

ASTS Risk / Return Rank: 85
ASTS Sharpe Ratio Rank: 88
ASTS Sortino Ratio Rank: 83
ASTS Omega Ratio Rank: 79
ASTS Calmar Ratio Rank: 89
ASTS Martin Ratio Rank: 85

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.

WDC vs. ASTS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Western Digital Corporation (WDC) 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.

	WDC	ASTS	Difference
Sharpe ratio: Return per unit of total volatility	13.33	1.88	+11.46
Sortino ratio: Return per unit of downside risk	6.78	2.44	+4.34
Omega ratio: Gain probability vs. loss probability	1.94	1.28	+0.65
Calmar ratio: Return relative to maximum drawdown	41.84	4.12	+37.72
Martin ratio: Return relative to average drawdown	146.77	8.15	+138.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WDC vs. ASTS - Sharpe Ratio Comparison

The current WDC Sharpe Ratio is 13.33, which is higher than the ASTS Sharpe Ratio of 1.88. The chart below compares the historical Sharpe Ratios of WDC 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.

Sharpe Ratios by Period

	WDC	ASTS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	13.33	1.88	+11.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.17	0.50	+0.67
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.68	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.20	0.40	-0.20

Drawdowns

WDC vs. ASTS - Drawdown Comparison

The maximum WDC drawdown since its inception was -96.20%, which is greater than ASTS's maximum drawdown of -91.07%. Use the drawdown chart below to compare losses from any high point for WDC and ASTS.

Drawdown Indicators

	WDC	ASTS	Difference
Max Drawdown Largest peak-to-trough decline	-96.20%	-91.07%	-5.13%
Max Drawdown (1Y) Largest decline over 1 year	-20.59%	-47.69%	+27.10%
Max Drawdown (3Y) Largest decline over 3 years	-49.65%	-70.66%	+21.01%
Max Drawdown (5Y) Largest decline over 5 years	-59.68%	-85.57%	+25.89%
Max Drawdown (10Y) Largest decline over 10 years	-70.49%	—	—
Current Drawdown Current decline from peak	-11.28%	-30.83%	+19.55%
Average Drawdown Average peak-to-trough decline	-52.09%	-43.38%	-8.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.86%	24.06%	-18.20%

Volatility

WDC vs. ASTS - Volatility Comparison

The current volatility for Western Digital Corporation (WDC) is 20.86%, while AST SpaceMobile, Inc. (ASTS) has a volatility of 40.76%. This indicates that WDC 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

	WDC	ASTS	Difference
Volatility (1M) Calculated over the trailing 1-month period	20.86%	40.76%	-19.90%
Volatility (6M) Calculated over the trailing 6-month period	52.91%	82.89%	-29.98%
Volatility (1Y) Calculated over the trailing 1-year period	64.74%	104.86%	-40.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	48.62%	109.43%	-60.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	48.52%	100.53%	-52.01%

Dividends

WDC vs. ASTS - Dividend Comparison

WDC's dividend yield for the trailing twelve months is around 0.09%, while ASTS has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ASTS AST SpaceMobile, 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%
WDC Western Digital Corporation	0.09%	0.19%	0.00%	0.00%	0.00%	0.00%	1.81%	2.36%	5.41%	2.51%	2.94%	3.33%

Financials

Frequently Asked Questions

Can I hold both WDC and ASTS in my portfolio?

WDC and ASTS have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WDC or ASTS?

ASTS has higher volatility (40.76%) compared to WDC (20.86%). In terms of maximum drawdown, WDC dropped -96.20% vs ASTS's -91.07%.

Which has better risk-adjusted returns?

WDC currently has the higher Sharpe Ratio (13.33 vs 1.88), 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.