KOPN vs. INDEX

Last updated Jun 4, 2026

KOPN (Kopin Corporation) is a stock, while INDEX (Index Funds S&P 500 Equal Weight) is Large Cap Blend Equities fund managed by Fidelity. Over the past 10 years, KOPN returned 10.41%/yr vs 13.13%/yr for INDEX. At a 0.38 correlation, their price movements are largely independent.

Performance

KOPN vs. INDEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Kopin Corporation (KOPN) and Index Funds S&P 500 Equal Weight (INDEX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, KOPN achieves a 164.53% return, which is significantly higher than INDEX's 11.54% return. Over the past 10 years, KOPN has underperformed INDEX with an annualized return of 10.41%, while INDEX has yielded a comparatively higher 13.13% annualized return.

KOPN

• 1D: 1.48%
• 1M: 38.48%
• YTD: 164.53%
• 6M: 146.61%
• 1Y: 355.15%
• 3Y*: 43.72%
• 5Y*: -6.12%
• 10Y*: 10.41%

INDEX

• 1D: 0.14%
• 1M: 5.79%
• YTD: 11.54%
• 6M: 11.59%
• 1Y: 28.87%
• 3Y*: 21.01%
• 5Y*: 11.61%
• 10Y*: 13.13%

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

KOPN vs. INDEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
KOPN Kopin Corporation	164.53%	72.06%	-33.00%	63.71%	-69.68%	68.31%	505.83%	-59.85%	-68.78%	12.68%
INDEX Index Funds S&P 500 Equal Weight	11.54%	17.77%	24.73%	10.58%	-11.84%	29.10%	12.75%	28.98%	-7.83%	18.70%

Correlation

The correlation between KOPN and INDEX 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 (3Y) Calculated over the trailing 3-year period	0.45
Correlation (5Y) Calculated over the trailing 5-year period	0.44
Correlation (10Y) Calculated over the trailing 10-year period	0.38
Correlation (All Time) Calculated using the full available price history since May 12, 2015	0.38

Return for Risk

KOPN vs. INDEX — Risk / Return Rank

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

KOPN

KOPN Risk / Return Rank: 92
KOPN Sharpe Ratio Rank: 97
KOPN Sortino Ratio Rank: 92
KOPN Omega Ratio Rank: 89
KOPN Calmar Ratio Rank: 94
KOPN Martin Ratio Rank: 91

INDEX

INDEX Risk / Return Rank: 73
INDEX Sharpe Ratio Rank: 76
INDEX Sortino Ratio Rank: 68
INDEX Omega Ratio Rank: 67
INDEX Calmar Ratio Rank: 73
INDEX Martin Ratio Rank: 83

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.

KOPN vs. INDEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Kopin Corporation (KOPN) and Index Funds S&P 500 Equal Weight (INDEX). 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.

	KOPN	INDEX	Difference
Sharpe ratio: Return per unit of total volatility	3.78	2.52	+1.26
Sortino ratio: Return per unit of downside risk	3.61	3.43	+0.18
Omega ratio: Gain probability vs. loss probability	1.42	1.46	-0.04
Calmar ratio: Return relative to maximum drawdown	6.42	3.33	+3.09
Martin ratio: Return relative to average drawdown	12.91	15.62	-2.72
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

KOPN vs. INDEX - Sharpe Ratio Comparison

The current KOPN Sharpe Ratio is 3.78, which is higher than the INDEX Sharpe Ratio of 2.52. The chart below compares the historical Sharpe Ratios of KOPN and INDEX, 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

	KOPN	INDEX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.78	2.52	+1.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.07	0.70	-0.77
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.12	0.71	-0.59
Sharpe Ratio (All Time) Calculated using the full available price history	0.04	0.63	-0.59

Drawdowns

KOPN vs. INDEX - Drawdown Comparison

The maximum KOPN drawdown since its inception was -99.57%, which is greater than INDEX's maximum drawdown of -38.82%. Use the drawdown chart below to compare losses from any high point for KOPN and INDEX.

Drawdown Indicators

	KOPN	INDEX	Difference
Max Drawdown Largest peak-to-trough decline	-99.57%	-38.82%	-60.75%
Max Drawdown (1Y) Largest decline over 1 year	-55.73%	-8.93%	-46.80%
Max Drawdown (3Y) Largest decline over 3 years	-78.27%	-18.75%	-59.52%
Max Drawdown (5Y) Largest decline over 5 years	-93.77%	-21.52%	-72.25%
Max Drawdown (10Y) Largest decline over 10 years	-95.58%	-38.82%	-56.76%
Current Drawdown Current decline from peak	-87.40%	0.00%	-87.40%
Average Drawdown Average peak-to-trough decline	-78.02%	-4.63%	-73.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	27.67%	1.90%	+25.77%

Volatility

KOPN vs. INDEX - Volatility Comparison

Kopin Corporation (KOPN) has a higher volatility of 31.76% compared to Index Funds S&P 500 Equal Weight (INDEX) at 2.83%. This indicates that KOPN's price experiences larger fluctuations and is considered to be riskier than INDEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	KOPN	INDEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	31.76%	2.83%	+28.93%
Volatility (6M) Calculated over the trailing 6-month period	66.86%	8.96%	+57.90%
Volatility (1Y) Calculated over the trailing 1-year period	94.87%	11.81%	+83.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	88.92%	16.76%	+72.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	87.55%	18.65%	+68.90%

Dividends

KOPN vs. INDEX - Dividend Comparison

KOPN has not paid dividends to shareholders, while INDEX's dividend yield for the trailing twelve months is around 0.93%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
INDEX Index Funds S&P 500 Equal Weight	0.93%	1.04%	1.97%	1.56%	3.25%	1.81%	1.53%	1.61%	3.09%	1.15%
KOPN Kopin Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both KOPN and INDEX in my portfolio?

KOPN and INDEX 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.

Which is riskier, KOPN or INDEX?

KOPN has higher volatility (31.76%) compared to INDEX (2.83%). In terms of maximum drawdown, KOPN dropped -99.57% vs INDEX's -38.82%.

Which has better risk-adjusted returns?

KOPN currently has the higher Sharpe Ratio (3.78 vs 2.52), 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.