ISRG vs. IONQ

Last updated Jun 13, 2026

ISRG (Intuitive Surgical, Inc.) and IONQ (IonQ, Inc.) are both stocks. ISRG operates in Medical Instruments & Supplies (Healthcare), while IONQ operates in Computer Hardware (Technology). Over the past 5 years, ISRG returned 7.37%/yr vs 40.49%/yr for IONQ. At a 0.36 correlation, their price movements are largely independent.

Performance

ISRG vs. IONQ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Intuitive Surgical, Inc. (ISRG) and IonQ, Inc. (IONQ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ISRG achieves a -27.42% return, which is significantly lower than IONQ's 28.93% return.

ISRG

• 1D: -0.45%
• 1M: -2.39%
• YTD: -27.42%
• 6M: -24.20%
• 1Y: -19.74%
• 3Y*: 9.23%
• 5Y*: 7.37%
• 10Y*: 19.09%

IONQ

• 1D: -0.24%
• 1M: 11.36%
• YTD: 28.93%
• 6M: 14.90%
• 1Y: 52.88%
• 3Y*: 75.90%
• 5Y*: 40.49%
• 10Y*: —

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

ISRG vs. IONQ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ISRG Intuitive Surgical, Inc.	-27.42%	8.51%	54.72%	27.14%	-26.15%	31.76%
IONQ IonQ, Inc.	28.93%	7.42%	237.13%	259.13%	-79.34%	50.11%

Correlation

The correlation between ISRG and IONQ is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (3Y) Calculated over the trailing 3-year period	0.29
Correlation (5Y) Calculated over the trailing 5-year period	0.37
Correlation (All Time) Calculated using the full available price history since Jan 4, 2021	0.36

Over the past year, the correlation between ISRG and IONQ has dropped to 0.13 - well below their long-term average of 0.36, suggesting their price drivers have been diverging.

Fundamentals

Market Cap ISRG : $147.90B IONQ : $21.48B
EPS ISRG : $8.24 IONQ : $0.86
PE Ratio ISRG : 49.88 IONQ : 67.11
PS Ratio ISRG : 14.04 IONQ : 99.37
PB Ratio ISRG : 8.40 IONQ : 4.32
Total Revenue (TTM) ISRG : $10.58B IONQ : $187.12M
Gross Profit (TTM) ISRG : $7.02B IONQ : $71.25M
EBITDA (TTM) ISRG : $3.76B IONQ : $405.86M

Return for Risk

ISRG vs. IONQ — Risk / Return Rank

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

ISRG

ISRG Risk / Return Rank: 16
ISRG Sharpe Ratio Rank: 15
ISRG Sortino Ratio Rank: 14
ISRG Omega Ratio Rank: 16
ISRG Calmar Ratio Rank: 20
ISRG Martin Ratio Rank: 14

IONQ

IONQ Risk / Return Rank: 61
IONQ Sharpe Ratio Rank: 61
IONQ Sortino Ratio Rank: 66
IONQ Omega Ratio Rank: 62
IONQ Calmar Ratio Rank: 59
IONQ Martin Ratio Rank: 57

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.

ISRG vs. IONQ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Intuitive Surgical, Inc. (ISRG) and IonQ, Inc. (IONQ). 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.

	ISRG	IONQ	Difference
Sharpe ratio: Return per unit of total volatility	-0.65	0.53	-1.18
Sortino ratio: Return per unit of downside risk	-0.87	1.43	-2.30
Omega ratio: Gain probability vs. loss probability	0.90	1.16	-0.26
Calmar ratio: Return relative to maximum drawdown	-0.62	0.73	-1.36
Martin ratio: Return relative to average drawdown	-1.24	1.33	-2.58

ISRG vs. IONQ - Sharpe Ratio Comparison

The current ISRG Sharpe Ratio is -0.65, which is lower than the IONQ Sharpe Ratio of 0.53. The chart below compares the historical Sharpe Ratios of ISRG and IONQ, 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

ISRG vs. IONQ - Drawdown Comparison

The maximum ISRG drawdown since its inception was -82.26%, smaller than the maximum IONQ drawdown of -90.00%. Use the drawdown chart below to compare losses from any high point for ISRG and IONQ.

Drawdown Indicators

	ISRG	IONQ	Difference
Max Drawdown Largest peak-to-trough decline	-82.26%	-90.00%	+7.74%
Max Drawdown (1Y) Largest decline over 1 year	-32.14%	-67.61%	+35.47%
Max Drawdown (3Y) Largest decline over 3 years	-34.10%	-67.61%	+33.51%
Max Drawdown (5Y) Largest decline over 5 years	-49.90%	-90.00%	+40.10%
Max Drawdown (10Y) Largest decline over 10 years	-49.90%	—	—
Current Drawdown Current decline from peak	-32.66%	-29.53%	-3.13%
Average Drawdown Average peak-to-trough decline	-21.28%	-50.88%	+29.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	16.00%	37.20%	-21.20%

Volatility

ISRG vs. IONQ - Volatility Comparison

The current volatility for Intuitive Surgical, Inc. (ISRG) is 9.70%, while IonQ, Inc. (IONQ) has a volatility of 31.60%. This indicates that ISRG experiences smaller price fluctuations and is considered to be less risky than IONQ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ISRG	IONQ	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.70%	31.60%	-21.90%
Volatility (6M) Calculated over the trailing 6-month period	20.72%	68.80%	-48.08%
Volatility (1Y) Calculated over the trailing 1-year period	30.69%	93.28%	-62.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.19%	100.48%	-67.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	32.40%	97.53%	-65.13%

Dividends

ISRG vs. IONQ - Dividend Comparison

Neither ISRG nor IONQ has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both ISRG and IONQ in my portfolio?

ISRG and IONQ have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ISRG or IONQ?

IONQ has higher volatility (31.60%) compared to ISRG (9.70%). In terms of maximum drawdown, ISRG dropped -82.26% vs IONQ's -90.00%.

Which has better risk-adjusted returns?

IONQ currently has the higher Sharpe Ratio (0.53 vs -0.65), 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.