SPGI vs. IONQ

Last updated Jun 13, 2026

SPGI (S&P Global Inc.) and IONQ (IonQ, Inc.) are both stocks. SPGI operates in Financial Data & Stock Exchanges (Financial Services), while IONQ operates in Computer Hardware (Technology). Over the past 5 years, SPGI returned 2.16%/yr vs 40.49%/yr for IONQ. At a 0.28 correlation, their price movements are largely independent.

Performance

SPGI vs. IONQ - Performance Comparison

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

Returns By Period

In the year-to-date period, SPGI achieves a -19.47% return, which is significantly lower than IONQ's 28.93% return.

SPGI

• 1D: 1.35%
• 1M: 4.15%
• YTD: -19.47%
• 6M: -16.00%
• 1Y: -15.77%
• 3Y*: 3.19%
• 5Y*: 2.16%
• 10Y*: 15.70%

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)

SPGI vs. IONQ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
SPGI S&P Global Inc.	-19.47%	5.71%	13.94%	32.79%	-28.38%	44.68%
IONQ IonQ, Inc.	28.93%	7.42%	237.13%	259.13%	-79.34%	50.11%

Correlation

The correlation between SPGI and IONQ is 0.07, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.07
Correlation (3Y) Calculated over the trailing 3-year period	0.19
Correlation (5Y) Calculated over the trailing 5-year period	0.28
Correlation (All Time) Calculated using the full available price history since Jan 4, 2021	0.28

Over the past year, the correlation between SPGI and IONQ has dropped to 0.07 - well below their long-term average of 0.28, suggesting their price drivers have been diverging.

Fundamentals

Market Cap SPGI : $124.67B IONQ : $21.48B
EPS SPGI : $15.79 IONQ : $0.86
PE Ratio SPGI : 26.53 IONQ : 67.11
PS Ratio SPGI : 8.06 IONQ : 99.37
PB Ratio SPGI : 3.98 IONQ : 4.32
Total Revenue (TTM) SPGI : $15.73B IONQ : $187.12M
Gross Profit (TTM) SPGI : $8.15B IONQ : $71.25M
EBITDA (TTM) SPGI : $7.83B IONQ : $405.86M

Return for Risk

SPGI vs. IONQ — Risk / Return Rank

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

SPGI

SPGI Risk / Return Rank: 19
SPGI Sharpe Ratio Rank: 17
SPGI Sortino Ratio Rank: 18
SPGI Omega Ratio Rank: 17
SPGI Calmar Ratio Rank: 24
SPGI Martin Ratio Rank: 22

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.

SPGI vs. IONQ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for S&P Global Inc. (SPGI) 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.

	SPGI	IONQ	Difference
Sharpe ratio: Return per unit of total volatility	-0.60	0.53	-1.13
Sortino ratio: Return per unit of downside risk	-0.63	1.43	-2.06
Omega ratio: Gain probability vs. loss probability	0.91	1.16	-0.25
Calmar ratio: Return relative to maximum drawdown	-0.54	0.73	-1.28
Martin ratio: Return relative to average drawdown	-1.03	1.33	-2.36

SPGI vs. IONQ - Sharpe Ratio Comparison

The current SPGI Sharpe Ratio is -0.60, which is lower than the IONQ Sharpe Ratio of 0.53. The chart below compares the historical Sharpe Ratios of SPGI 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

SPGI vs. IONQ - Drawdown Comparison

The maximum SPGI drawdown since its inception was -74.67%, smaller than the maximum IONQ drawdown of -90.00%. Use the drawdown chart below to compare losses from any high point for SPGI and IONQ.

Drawdown Indicators

	SPGI	IONQ	Difference
Max Drawdown Largest peak-to-trough decline	-74.67%	-90.00%	+15.33%
Max Drawdown (1Y) Largest decline over 1 year	-30.48%	-67.61%	+37.13%
Max Drawdown (3Y) Largest decline over 3 years	-30.48%	-67.61%	+37.13%
Max Drawdown (5Y) Largest decline over 5 years	-39.76%	-90.00%	+50.24%
Max Drawdown (10Y) Largest decline over 10 years	-39.76%	—	—
Current Drawdown Current decline from peak	-25.12%	-29.53%	+4.41%
Average Drawdown Average peak-to-trough decline	-15.23%	-50.88%	+35.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	16.07%	37.20%	-21.13%

Volatility

SPGI vs. IONQ - Volatility Comparison

The current volatility for S&P Global Inc. (SPGI) is 7.62%, while IonQ, Inc. (IONQ) has a volatility of 31.60%. This indicates that SPGI 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

	SPGI	IONQ	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.62%	31.60%	-23.98%
Volatility (6M) Calculated over the trailing 6-month period	24.13%	68.80%	-44.67%
Volatility (1Y) Calculated over the trailing 1-year period	27.63%	93.28%	-65.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.51%	100.48%	-75.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.03%	97.53%	-71.50%

Dividends

SPGI vs. IONQ - Dividend Comparison

SPGI's dividend yield for the trailing twelve months is around 0.92%, while IONQ has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IONQ IonQ, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPGI S&P Global Inc.	0.92%	0.73%	0.73%	0.82%	0.99%	0.65%	0.82%	0.84%	1.18%	0.97%	1.34%	1.34%

Financials

Frequently Asked Questions

Can I hold both SPGI and IONQ in my portfolio?

SPGI and IONQ have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SPGI or IONQ?

IONQ has higher volatility (31.60%) compared to SPGI (7.62%). In terms of maximum drawdown, SPGI dropped -74.67% vs IONQ's -90.00%.

Which has better risk-adjusted returns?

IONQ currently has the higher Sharpe Ratio (0.53 vs -0.60), 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.