SNDK vs. COHR
SNDK (Sandisk Corporation) and COHR (Coherent Corp.) are both stocks. Both are in the Technology sector — SNDK in Computer Hardware, COHR in Scientific & Technical Instruments. Over the past year, SNDK returned 3658.74% vs 269.31% for COHR. At a 0.45 correlation, their price movements are largely independent.
Performance
SNDK vs. COHR - Performance Comparison
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Returns By Period
In the year-to-date period, SNDK achieves a 634.87% return, which is significantly higher than COHR's 81.88% return.
SNDK
- 1D
- -0.03%
- 1M
- 11.87%
- 6M
- 536.47%
- YTD
- 634.87%
- 1Y
- 3,658.74%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
COHR
- 1D
- 0.70%
- 1M
- -10.95%
- 6M
- 80.14%
- YTD
- 81.88%
- 1Y
- 269.31%
- 3Y*
- 86.85%
- 5Y*
- 36.00%
- 10Y*
- 33.27%
SNDK vs. COHR - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
SNDK Sandisk Corporation | 634.87% | 356.50% |
COHR Coherent Corp. | 81.88% | 123.34% |
Correlation
The correlation between SNDK and COHR is 0.46, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.46 |
Correlation (All Time) Calculated using the full available price history since Feb 24, 2025 | 0.45 |
Fundamentals
SNDK:
$258.33B
COHR:
$53.23B
SNDK:
$29.27
COHR:
$1.85K
SNDK:
59.61
COHR:
0.18
SNDK:
20.38
COHR:
0.02
SNDK:
$13.18B
COHR:
$1.81T
SNDK:
$7.39B
COHR:
$1.76B
SNDK:
$5.37B
COHR:
$960.76M
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Return for Risk
SNDK vs. COHR — Risk / Return Rank
SNDK
COHR
SNDK vs. COHR - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Sandisk Corporation (SNDK) and Coherent Corp. (COHR). 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 | COHR | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +31.35 | ||
| Sortino ratioReturn per unit of downside risk | +4.04 | ||
| Omega ratioGain probability vs. loss probability | 1.98 | 1.44 | +0.54 |
| Calmar ratioReturn relative to maximum drawdown | 118.49 | 10.23 | +108.26 |
| Martin ratioReturn relative to average drawdown | 348.30 | 27.00 | +321.30 |
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Drawdowns
SNDK vs. COHR - Drawdown Comparison
The maximum SNDK drawdown since its inception was -47.50%, smaller than the maximum COHR drawdown of -80.89%. Use the drawdown chart below to compare losses from any high point for SNDK and COHR.
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Drawdown Indicators
| SNDK | COHR | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -47.50% | -80.89% | +33.39% |
Max Drawdown (1Y)Largest decline over 1 year | -31.34% | -26.52% | -4.82% |
Max Drawdown (3Y)Largest decline over 3 years | — | -54.85% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -62.87% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -72.22% | — |
Current DrawdownCurrent decline from peak | -25.29% | -21.36% | -3.93% |
Average DrawdownAverage peak-to-trough decline | -13.56% | -34.98% | +21.42% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 10.64% | 10.03% | +0.61% |
Volatility
SNDK vs. COHR - Volatility Comparison
Sandisk Corporation (SNDK) has a higher volatility of 43.63% compared to Coherent Corp. (COHR) at 30.34%. This indicates that SNDK's price experiences larger fluctuations and is considered to be riskier than COHR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SNDK | COHR | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 43.63% | 30.34% | +13.29% |
Volatility (6M)Calculated over the trailing 6-month period | 79.05% | 60.62% | +18.43% |
Volatility (1Y)Calculated over the trailing 1-year period | 106.62% | 76.60% | +30.02% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 101.18% | 62.43% | +38.75% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 101.18% | 56.98% | +44.20% |
Dividends
SNDK vs. COHR - Dividend Comparison
Neither SNDK nor COHR has paid dividends to shareholders.
Financials
SNDK vs. COHR - Financials Comparison
This section allows you to compare key financial metrics between Sandisk Corporation and Coherent Corp.. 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. COHR - Profitability Comparison
SNDK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 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%.
COHR - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jul 2026, Coherent Corp. reported a gross profit of 0.00 and revenue of 1.81T. Therefore, the gross margin over that period was 0.0%.
SNDK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Sandisk Corporation reported an operating income of 4.11B and revenue of 5.95B, resulting in an operating margin of 69.1%.
COHR - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jul 2026, Coherent Corp. reported an operating income of 0.00 and revenue of 1.81T, resulting in an operating margin of 0.0%.
SNDK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Sandisk Corporation reported a net income of 3.62B and revenue of 5.95B, resulting in a net margin of 60.8%.
COHR - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jul 2026, Coherent Corp. reported a net income of 191.40B and revenue of 1.81T, resulting in a net margin of 10.6%.
Frequently Asked Questions
SNDK and COHR have a correlation of 0.46, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SNDK has higher volatility (43.63%) compared to COHR (30.34%). In terms of maximum drawdown, SNDK dropped -47.50% vs COHR's -80.89%.
SNDK currently has the higher Sharpe Ratio (34.90 vs 3.55), 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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