WDC vs. RKLB
WDC (Western Digital Corporation) and RKLB (Rocket Lab USA, Inc.) are both stocks. WDC operates in Computer Hardware (Technology), while RKLB operates in Aerospace & Defense (Industrials). Over the past 3 years, WDC returned 164.18%/yr vs 158.32%/yr for RKLB. At a 0.37 correlation, their price movements are largely independent.
Performance
WDC vs. RKLB - Performance Comparison
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Returns By Period
In the year-to-date period, WDC achieves a 227.01% return, which is significantly higher than RKLB's 46.77% return.
WDC
- 1D
- 6.35%
- 1M
- 13.96%
- YTD
- 227.01%
- 6M
- 219.46%
- 1Y
- 911.92%
- 3Y*
- 164.18%
- 5Y*
- 58.50%
- 10Y*
- 33.87%
RKLB
- 1D
- -10.79%
- 1M
- -17.53%
- YTD
- 46.77%
- 6M
- 66.51%
- 1Y
- 287.84%
- 3Y*
- 158.32%
- 5Y*
- —
- 10Y*
- —
WDC vs. RKLB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
WDC Western Digital Corporation | 227.01% | 283.68% | 13.86% | 65.99% | -51.62% | 4.70% |
RKLB Rocket Lab USA, Inc. | 46.77% | 173.89% | 360.58% | 46.68% | -69.30% | 8.67% |
Correlation
The correlation between WDC and RKLB is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.29 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.33 |
Correlation (All Time) Calculated using the full available price history since Aug 24, 2021 | 0.37 |
Fundamentals
WDC:
$23.29
RKLB:
-$0.33
WDC:
13.31
RKLB:
83.69
WDC:
$11.78B
RKLB:
$679.58M
WDC:
$5.35B
RKLB:
$248.43M
WDC:
$10.88B
RKLB:
-$177.36M
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Return for Risk
WDC vs. RKLB — Risk / Return Rank
WDC
RKLB
WDC vs. RKLB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Western Digital Corporation (WDC) and Rocket Lab USA, Inc. (RKLB). 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.
| WDC | RKLB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +10.95 | ||
| Sortino ratioReturn per unit of downside risk | +3.75 | ||
| Omega ratioGain probability vs. loss probability | 1.95 | 1.38 | +0.57 |
| Calmar ratioReturn relative to maximum drawdown | 44.74 | 6.74 | +38.00 |
| Martin ratioReturn relative to average drawdown | 151.81 | 15.44 | +136.38 |
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Drawdowns
WDC vs. RKLB - Drawdown Comparison
The maximum WDC drawdown since its inception was -96.20%, which is greater than RKLB's maximum drawdown of -82.96%. Use the drawdown chart below to compare losses from any high point for WDC and RKLB.
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Drawdown Indicators
| WDC | RKLB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -96.20% | -82.96% | -13.24% |
Max Drawdown (1Y)Largest decline over 1 year | -20.59% | -43.01% | +22.42% |
Max Drawdown (3Y)Largest decline over 3 years | -49.65% | -55.49% | +5.84% |
Max Drawdown (5Y)Largest decline over 5 years | -59.68% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -70.49% | — | — |
Current DrawdownCurrent decline from peak | -5.22% | -31.84% | +26.62% |
Average DrawdownAverage peak-to-trough decline | -52.07% | -51.29% | -0.78% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 6.06% | 18.75% | -12.69% |
Volatility
WDC vs. RKLB - Volatility Comparison
The current volatility for Western Digital Corporation (WDC) is 21.76%, while Rocket Lab USA, Inc. (RKLB) has a volatility of 31.54%. This indicates that WDC experiences smaller price fluctuations and is considered to be less risky than RKLB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WDC | RKLB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 21.76% | 31.54% | -9.78% |
Volatility (6M)Calculated over the trailing 6-month period | 53.55% | 73.47% | -19.92% |
Volatility (1Y)Calculated over the trailing 1-year period | 65.47% | 93.03% | -27.56% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 48.86% | 81.62% | -32.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 48.62% | 81.62% | -33.00% |
Dividends
WDC vs. RKLB - Dividend Comparison
WDC's dividend yield for the trailing twelve months is around 0.09%, while RKLB has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
RKLB Rocket Lab USA, 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
WDC vs. RKLB - Financials Comparison
This section allows you to compare key financial metrics between Western Digital Corporation and Rocket Lab USA, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
WDC vs. RKLB - Profitability Comparison
WDC - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Western Digital Corporation reported a gross profit of 1.68B and revenue of 3.34B. Therefore, the gross margin over that period was 50.2%.
RKLB - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported a gross profit of 76.49M and revenue of 200.35M. Therefore, the gross margin over that period was 38.2%.
WDC - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Western Digital Corporation reported an operating income of 1.14B and revenue of 3.34B, resulting in an operating margin of 34.0%.
RKLB - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported an operating income of -55.97M and revenue of 200.35M, resulting in an operating margin of -27.9%.
WDC - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Western Digital Corporation reported a net income of 3.21B and revenue of 3.34B, resulting in a net margin of 96.0%.
RKLB - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported a net income of -45.02M and revenue of 200.35M, resulting in a net margin of -22.5%.
Frequently Asked Questions
WDC and RKLB have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RKLB has higher volatility (31.54%) compared to WDC (21.76%). In terms of maximum drawdown, WDC dropped -96.20% vs RKLB's -82.96%.
WDC currently has the higher Sharpe Ratio (14.07 vs 3.12), 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.
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