COHR vs. VOO

Last updated Aug 1, 2026

COHR (Coherent Corp.) is a stock, while VOO (Vanguard S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, COHR returned 28.55%/yr vs 15.14%/yr for VOO. Their 0.57 correlation means they have sometimes moved together and sometimes differently.

Performance

COHR vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Coherent Corp. (COHR) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COHR achieves a 42.43% return, which is significantly higher than VOO's 10.16% return. Over the past 10 years, COHR has outperformed VOO with an annualized return of 28.55%, while VOO has yielded a comparatively lower 15.14% annualized return.

COHR

• 1D: 5.55%
• 1M: -21.14%
• 6M: 23.90%
• YTD: 42.43%
• 1Y: 155.75%
• 3Y*: 77.59%
• 5Y*: 30.37%
• 10Y*: 28.55%
• ALL TIME*: 19.25%

VOO

• 1D: 0.71%
• 1M: 0.26%
• 6M: 8.58%
• YTD: 10.16%
• 1Y: 21.58%
• 3Y*: 19.42%
• 5Y*: 12.83%
• 10Y*: 15.14%
• ALL TIME*: 14.78%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
COHR Coherent Corp.	$1.31B	$1.37B	$2.05B
VOO Vanguard S&P 500 ETF	$3.82B	$3.78B	$5.44B

COHR vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
COHR Coherent Corp.	42.43%	94.84%	117.62%	24.02%	-48.63%	-10.04%	125.60%	3.73%	-30.86%	58.35%
VOO Vanguard S&P 500 ETF	10.16%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between COHR and VOO is 0.56, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.56
Correlation (3Y) Balances recent behavior with more history.	0.59
Correlation (5Y) Shows whether the relationship held over a longer period.	0.62
Correlation (10Y) Provides a long-term view across more market conditions.	0.57
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.57

The correlation between COHR and VOO has been stable across timeframes, ranging from 0.56 to 0.62 - a consistent structural relationship.

Return for Risk

COHR vs. VOO — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

COHR

COHR Risk / Return Rank: 87
COHR Sharpe Ratio Rank: 89
COHR Sortino Ratio Rank: 84
COHR Omega Ratio Rank: 84
COHR Calmar Ratio Rank: 87
COHR Martin Ratio Rank: 92

VOO

VOO Risk / Return Rank: 68
VOO Sharpe Ratio Rank: 68
VOO Sortino Ratio Rank: 65
VOO Omega Ratio Rank: 66
VOO Calmar Ratio Rank: 64
VOO Martin Ratio Rank: 76

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

COHR vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Coherent Corp. (COHR) and Vanguard S&P 500 ETF (VOO). 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.

	COHR	VOO	Difference
Sharpe ratio: Return per unit of total volatility	1.79	1.53	+0.26
Sortino ratio: Return per unit of downside risk	2.26	2.13	+0.13
Omega ratio: Gain probability vs. loss probability	1.29	1.28	+0.02
Calmar ratio: Return relative to maximum drawdown	3.03	2.21	+0.82
Martin ratio: Return relative to average drawdown	10.76	9.44	+1.33

COHR vs. VOO - Sharpe Ratio Comparison

The current COHR Sharpe Ratio is 1.79, which is comparable to the VOO Sharpe Ratio of 1.53. The chart below compares the historical Sharpe Ratios of COHR and VOO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

COHR vs. VOO - Drawdown Comparison

The maximum COHR drawdown since its inception was -80.89%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for COHR and VOO.

Drawdown Indicators

	COHR	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-80.89%	-33.99%	-46.90%
Max Drawdown (1Y) Largest decline over 1 year	-47.98%	-8.90%	-39.08%
Max Drawdown (3Y) Largest decline over 3 years	-54.85%	-18.69%	-36.16%
Max Drawdown (5Y) Largest decline over 5 years	-62.87%	-24.52%	-38.35%
Max Drawdown (10Y) Largest decline over 10 years	-72.22%	-33.99%	-38.23%
Current Drawdown Current decline from peak	-38.42%	-1.38%	-37.04%
Average Drawdown Average peak-to-trough decline	-34.97%	-3.67%	-31.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.46%	2.08%	+11.38%

Volatility

COHR vs. VOO - Volatility Comparison

Coherent Corp. (COHR) has a higher volatility of 29.28% compared to Vanguard S&P 500 ETF (VOO) at 3.54%. This indicates that COHR's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COHR	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.28%	3.54%	+25.74%
Volatility (6M) Calculated over the trailing 6-month period	64.16%	10.10%	+54.06%
Volatility (1Y) Calculated over the trailing 1-year period	81.08%	12.82%	+68.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	63.47%	16.93%	+46.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	57.61%	18.01%	+39.60%

Dividends

COHR vs. VOO - Dividend Comparison

COHR has not paid dividends to shareholders, while VOO's dividend yield for the trailing twelve months is around 1.07%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COHR Coherent Corp.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VOO Vanguard S&P 500 ETF	1.07%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both COHR and VOO in my portfolio?

COHR and VOO have a correlation of 0.56, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, COHR or VOO?

COHR has higher volatility (29.28%) compared to VOO (3.54%). In terms of maximum drawdown, COHR dropped -80.89% vs VOO's -33.99%.

Which has better risk-adjusted returns?

COHR currently has the higher Sharpe Ratio (1.79 vs 1.53), 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.