NEPH vs. OPXS
NEPH (Nephros, Inc.) and OPXS (Optex Systems Holdings Inc. Common Stock) are both stocks. NEPH operates in Medical Instruments & Supplies (Healthcare), while OPXS operates in Aerospace & Defense (Industrials). Over the past 10 years, NEPH returned 2.06%/yr vs 20.76%/yr for OPXS. At a 0.04 correlation, their price movements are largely independent.
Performance
NEPH vs. OPXS - Performance Comparison
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Returns By Period
In the year-to-date period, NEPH achieves a -29.92% return, which is significantly lower than OPXS's -14.17% return. Over the past 10 years, NEPH has underperformed OPXS with an annualized return of 2.06%, while OPXS has yielded a comparatively higher 20.76% annualized return.
NEPH
- 1D
- -4.74%
- 1M
- 6.21%
- YTD
- -29.92%
- 6M
- -39.47%
- 1Y
- 0.59%
- 3Y*
- 25.02%
- 5Y*
- -17.22%
- 10Y*
- 2.06%
OPXS
- 1D
- 1.50%
- 1M
- 12.06%
- YTD
- -14.17%
- 6M
- -15.07%
- 1Y
- 32.14%
- 3Y*
- 50.78%
- 5Y*
- 51.40%
- 10Y*
- 20.76%
NEPH vs. OPXS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
NEPH Nephros, Inc. | -29.92% | 231.97% | -57.51% | 199.00% | -80.39% | -31.24% | -13.77% | 93.96% | 26.67% | 22.92% |
OPXS Optex Systems Holdings Inc. Common Stock | -14.17% | 106.71% | 4.66% | 122.19% | 57.75% | 5.06% | -9.64% | 50.38% | 23.80% | 70.34% |
Correlation
The correlation between NEPH and OPXS is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.12 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.10 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.06 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.04 |
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016 | 0.04 |
Fundamentals
NEPH:
$0.07
OPXS:
$127.40
NEPH:
48.27
OPXS:
0.10
NEPH:
0.03
OPXS:
0.00
NEPH:
1.96
OPXS:
0.02
NEPH:
$19.12M
OPXS:
$3.78B
NEPH:
$11.32M
OPXS:
$1.45B
NEPH:
$814.00K
OPXS:
$664.48M
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Return for Risk
NEPH vs. OPXS — Risk / Return Rank
NEPH
OPXS
NEPH vs. OPXS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Nephros, Inc. (NEPH) and Optex Systems Holdings Inc. Common Stock (OPXS). 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.
| NEPH | OPXS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.44 | ||
| Sortino ratioReturn per unit of downside risk | -0.32 | ||
| Omega ratioGain probability vs. loss probability | 1.10 | 1.14 | -0.04 |
| Calmar ratioReturn relative to maximum drawdown | 0.01 | 0.77 | -0.76 |
| Martin ratioReturn relative to average drawdown | 0.02 | 1.54 | -1.52 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| NEPH | OPXS | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.01 | 0.44 | -0.44 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.22 | 0.96 | -1.18 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.02 | 0.35 | -0.32 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.06 | -0.09 | +0.15 |
Drawdowns
NEPH vs. OPXS - Drawdown Comparison
The maximum NEPH drawdown since its inception was -91.98%, smaller than the maximum OPXS drawdown of -99.87%. Use the drawdown chart below to compare losses from any high point for NEPH and OPXS.
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Drawdown Indicators
| NEPH | OPXS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -91.98% | -99.87% | +7.89% |
Max Drawdown (1Y)Largest decline over 1 year | -51.94% | -41.80% | -10.14% |
Max Drawdown (3Y)Largest decline over 3 years | -65.06% | -45.68% | -19.38% |
Max Drawdown (5Y)Largest decline over 5 years | -91.48% | -45.68% | -45.80% |
Max Drawdown (10Y)Largest decline over 10 years | -91.98% | -76.40% | -15.58% |
Current DrawdownCurrent decline from peak | -69.87% | -97.16% | +27.29% |
Average DrawdownAverage peak-to-trough decline | -48.43% | -95.72% | +47.29% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 28.32% | 20.97% | +7.35% |
Volatility
NEPH vs. OPXS - Volatility Comparison
Nephros, Inc. (NEPH) has a higher volatility of 34.44% compared to Optex Systems Holdings Inc. Common Stock (OPXS) at 18.35%. This indicates that NEPH's price experiences larger fluctuations and is considered to be riskier than OPXS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| NEPH | OPXS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 34.44% | 18.35% | +16.09% |
Volatility (6M)Calculated over the trailing 6-month period | 59.63% | 46.36% | +13.27% |
Volatility (1Y)Calculated over the trailing 1-year period | 102.86% | 73.02% | +29.84% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 77.17% | 53.95% | +23.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 87.29% | 59.89% | +27.40% |
Dividends
NEPH vs. OPXS - Dividend Comparison
Neither NEPH nor OPXS has paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
NEPH Nephros, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
OPXS Optex Systems Holdings Inc. Common Stock | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 3.05% | 3.64% |
Financials
NEPH vs. OPXS - Financials Comparison
This section allows you to compare key financial metrics between Nephros, Inc. and Optex Systems Holdings Inc. Common Stock. 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
NEPH vs. OPXS - Profitability Comparison
NEPH - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Nephros, Inc. reported a gross profit of 2.99M and revenue of 5.21M. Therefore, the gross margin over that period was 57.4%.
OPXS - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Optex Systems Holdings Inc. Common Stock reported a gross profit of 1.44B and revenue of 3.75B. Therefore, the gross margin over that period was 38.3%.
NEPH - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Nephros, Inc. reported an operating income of 97.00K and revenue of 5.21M, resulting in an operating margin of 1.9%.
OPXS - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Optex Systems Holdings Inc. Common Stock reported an operating income of 660.00M and revenue of 3.75B, resulting in an operating margin of 17.6%.
NEPH - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Nephros, Inc. reported a net income of 140.00K and revenue of 5.21M, resulting in a net margin of 2.7%.
OPXS - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Optex Systems Holdings Inc. Common Stock reported a net income of 660.00M and revenue of 3.75B, resulting in a net margin of 17.6%.
Frequently Asked Questions
NEPH and OPXS have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
NEPH has higher volatility (34.44%) compared to OPXS (18.35%). In terms of maximum drawdown, NEPH dropped -91.98% vs OPXS's -99.87%.
OPXS currently has the higher Sharpe Ratio (0.44 vs 0.01), 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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