SNDK vs. AAOI
SNDK (Sandisk Corporation) and AAOI (Applied Optoelectronics, Inc.) are both stocks. Both are in the Technology sector — SNDK in Computer Hardware, AAOI in Semiconductors. Over the past year, SNDK returned 4559.06% vs 992.76% for AAOI. At a 0.35 correlation, their price movements are largely independent.
Performance
SNDK vs. AAOI - Performance Comparison
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Returns By Period
In the year-to-date period, SNDK achieves a 734.15% return, which is significantly higher than AAOI's 384.94% return.
SNDK
- 1D
- 5.24%
- 1M
- 40.67%
- YTD
- 734.15%
- 6M
- 860.37%
- 1Y
- 4,559.06%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
AAOI
- 1D
- -2.16%
- 1M
- -11.19%
- YTD
- 384.94%
- 6M
- 427.29%
- 1Y
- 992.76%
- 3Y*
- 259.45%
- 5Y*
- 80.64%
- 10Y*
- 32.75%
SNDK vs. AAOI - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
SNDK Sandisk Corporation | 734.15% | 356.50% |
AAOI Applied Optoelectronics, Inc. | 384.94% | 28.92% |
Correlation
The correlation between SNDK and AAOI is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.34 |
Correlation (All Time) Calculated using the full available price history since Feb 24, 2025 | 0.35 |
Fundamentals
SNDK:
$310.88B
AAOI:
$12.84B
SNDK:
$29.70
AAOI:
-$0.65
SNDK:
22.79
AAOI:
22.21
SNDK:
22.56
AAOI:
11.61
SNDK:
$13.18B
AAOI:
$507.00M
SNDK:
$7.39B
AAOI:
$150.29M
SNDK:
$5.37B
AAOI:
-$26.44M
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Return for Risk
SNDK vs. AAOI — Risk / Return Rank
SNDK
AAOI
SNDK vs. AAOI - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Sandisk Corporation (SNDK) and Applied Optoelectronics, Inc. (AAOI). 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.
| SNDK | AAOI | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +41.42 | ||
| Sortino ratioReturn per unit of downside risk | +4.03 | ||
| Omega ratioGain probability vs. loss probability | 2.16 | 1.50 | +0.66 |
| Calmar ratioReturn relative to maximum drawdown | 152.17 | 19.07 | +133.11 |
| Martin ratioReturn relative to average drawdown | 461.00 | 52.70 | +408.30 |
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Drawdowns
SNDK vs. AAOI - Drawdown Comparison
The maximum SNDK drawdown since its inception was -47.50%, smaller than the maximum AAOI drawdown of -98.49%. Use the drawdown chart below to compare losses from any high point for SNDK and AAOI.
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Drawdown Indicators
| SNDK | AAOI | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -47.50% | -98.49% | +50.99% |
Max Drawdown (1Y)Largest decline over 1 year | -31.34% | -47.64% | +16.30% |
Max Drawdown (3Y)Largest decline over 3 years | — | -77.17% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -83.07% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -98.49% | — |
Current DrawdownCurrent decline from peak | 0.00% | -24.23% | +24.23% |
Average DrawdownAverage peak-to-trough decline | -13.74% | -65.67% | +51.93% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 10.32% | 17.21% | -6.89% |
Volatility
SNDK vs. AAOI - Volatility Comparison
The current volatility for Sandisk Corporation (SNDK) is 26.68%, while Applied Optoelectronics, Inc. (AAOI) has a volatility of 40.42%. This indicates that SNDK experiences smaller price fluctuations and is considered to be less risky than AAOI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SNDK | AAOI | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 26.68% | 40.42% | -13.74% |
Volatility (6M)Calculated over the trailing 6-month period | 71.96% | 109.93% | -37.97% |
Volatility (1Y)Calculated over the trailing 1-year period | 99.48% | 139.42% | -39.94% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 97.64% | 119.31% | -21.67% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 97.64% | 98.26% | -0.62% |
Dividends
SNDK vs. AAOI - Dividend Comparison
Neither SNDK nor AAOI has paid dividends to shareholders.
Financials
SNDK vs. AAOI - Financials Comparison
This section allows you to compare key financial metrics between Sandisk Corporation and Applied Optoelectronics, 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
SNDK vs. AAOI - Profitability Comparison
SNDK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Sandisk Corporation reported a gross profit of 4.66B and revenue of 5.95B. Therefore, the gross margin over that period was 78.4%.
AAOI - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Applied Optoelectronics, Inc. reported a gross profit of 43.92M and revenue of 151.14M. Therefore, the gross margin over that period was 29.1%.
SNDK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Sandisk Corporation reported an operating income of 4.11B and revenue of 5.95B, resulting in an operating margin of 69.1%.
AAOI - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Applied Optoelectronics, Inc. reported an operating income of -12.99M and revenue of 151.14M, resulting in an operating margin of -8.6%.
SNDK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Sandisk Corporation reported a net income of 3.62B and revenue of 5.95B, resulting in a net margin of 60.8%.
AAOI - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Applied Optoelectronics, Inc. reported a net income of -14.28M and revenue of 151.14M, resulting in a net margin of -9.5%.
Frequently Asked Questions
SNDK and AAOI have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AAOI has higher volatility (40.42%) compared to SNDK (26.68%). In terms of maximum drawdown, SNDK dropped -47.50% vs AAOI's -98.49%.
SNDK currently has the higher Sharpe Ratio (47.94 vs 6.52), 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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