COHR vs. PPTA

Last updated Jun 9, 2026

COHR (Coherent, Inc.) and PPTA (Perpetua Resources Corp) are both stocks. COHR operates in Scientific & Technical Instruments (Technology), while PPTA operates in Other Precious Metals & Mining (Basic Materials). Over the past 5 years, COHR returned 41.61%/yr vs 22.69%/yr for PPTA. At a 0.27 correlation, their price movements are largely independent.

Performance

COHR vs. PPTA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Coherent, Inc. (COHR) and Perpetua Resources Corp (PPTA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COHR achieves a 117.77% return, which is significantly higher than PPTA's -5.37% return.

COHR

• 1D: 6.62%
• 1M: 19.89%
• YTD: 117.77%
• 6M: 116.25%
• 1Y: 404.05%
• 3Y*: 117.79%
• 5Y*: 41.61%
• 10Y*: 35.09%

PPTA

• 1D: 1.15%
• 1M: -23.51%
• YTD: -5.37%
• 6M: -9.30%
• 1Y: 31.89%
• 3Y*: 71.90%
• 5Y*: 22.69%
• 10Y*: —

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

COHR vs. PPTA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
COHR Coherent, Inc.	117.77%	94.84%	117.62%	24.02%	-48.63%	-22.03%
PPTA Perpetua Resources Corp	-5.37%	126.90%	236.59%	8.56%	-38.53%	-41.36%

Correlation

The correlation between COHR and PPTA 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 (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.27
Correlation (All Time) Calculated using the full available price history since Feb 19, 2021	0.27

Fundamentals

EPS COHR : $1.64K PPTA : $1.22
PE Ratio COHR : 0.24 PPTA : 18.73
PEG Ratio COHR : 0.04 PPTA : 0.05
Total Revenue (TTM) COHR : $1.81T PPTA : $0.00
Gross Profit (TTM) COHR : $1.76B PPTA : $0.00
EBITDA (TTM) COHR : $960.76M PPTA : $0.00

Return for Risk

COHR vs. PPTA — Risk / Return Rank

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

COHR

COHR Risk / Return Rank: 98
COHR Sharpe Ratio Rank: 99
COHR Sortino Ratio Rank: 96
COHR Omega Ratio Rank: 95
COHR Calmar Ratio Rank: 99
COHR Martin Ratio Rank: 99

PPTA

PPTA Risk / Return Rank: 58
PPTA Sharpe Ratio Rank: 57
PPTA Sortino Ratio Rank: 57
PPTA Omega Ratio Rank: 57
PPTA Calmar Ratio Rank: 60
PPTA Martin Ratio Rank: 61

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.

COHR vs. PPTA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Coherent, Inc. (COHR) and Perpetua Resources Corp (PPTA). 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.

	COHR	PPTA	Difference
Sharpe ratio: Return per unit of total volatility	5.62	0.43	+5.19
Sortino ratio: Return per unit of downside risk	4.13	1.06	+3.07
Omega ratio: Gain probability vs. loss probability	1.58	1.14	+0.44
Calmar ratio: Return relative to maximum drawdown	15.36	0.82	+14.54
Martin ratio: Return relative to average drawdown	42.88	1.90	+40.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

COHR vs. PPTA - Sharpe Ratio Comparison

The current COHR Sharpe Ratio is 5.62, which is higher than the PPTA Sharpe Ratio of 0.43. The chart below compares the historical Sharpe Ratios of COHR and PPTA, 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

	COHR	PPTA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	5.62	0.43	+5.19
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.32	+0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.62	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.33	0.30	+0.02

Drawdowns

COHR vs. PPTA - Drawdown Comparison

The maximum COHR drawdown since its inception was -80.89%, roughly equal to the maximum PPTA drawdown of -81.78%. Use the drawdown chart below to compare losses from any high point for COHR and PPTA.

Drawdown Indicators

	COHR	PPTA	Difference
Max Drawdown Largest peak-to-trough decline	-80.89%	-81.78%	+0.89%
Max Drawdown (1Y) Largest decline over 1 year	-26.52%	-39.15%	+12.63%
Max Drawdown (3Y) Largest decline over 3 years	-54.85%	-39.62%	-15.23%
Max Drawdown (5Y) Largest decline over 5 years	-62.87%	-81.78%	+18.91%
Max Drawdown (10Y) Largest decline over 10 years	-72.22%	—	—
Current Drawdown Current decline from peak	-5.85%	-38.45%	+32.60%
Average Drawdown Average peak-to-trough decline	-35.03%	-38.73%	+3.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	9.48%	16.92%	-7.44%

Volatility

COHR vs. PPTA - Volatility Comparison

Coherent, Inc. (COHR) has a higher volatility of 28.41% compared to Perpetua Resources Corp (PPTA) at 24.72%. This indicates that COHR's price experiences larger fluctuations and is considered to be riskier than PPTA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COHR	PPTA	Difference
Volatility (1M) Calculated over the trailing 1-month period	28.41%	24.72%	+3.69%
Volatility (6M) Calculated over the trailing 6-month period	55.90%	55.73%	+0.17%
Volatility (1Y) Calculated over the trailing 1-year period	72.65%	75.03%	-2.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	61.36%	71.85%	-10.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	56.43%	72.00%	-15.57%

Dividends

COHR vs. PPTA - Dividend Comparison

Neither COHR nor PPTA has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both COHR and PPTA in my portfolio?

COHR and PPTA 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.

Which is riskier, COHR or PPTA?

COHR has higher volatility (28.41%) compared to PPTA (24.72%). In terms of maximum drawdown, COHR dropped -80.89% vs PPTA's -81.78%.

Which has better risk-adjusted returns?

COHR currently has the higher Sharpe Ratio (5.62 vs 0.43), 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.