NBTX vs. CI

Last updated Jun 23, 2026

NBTX (Nanobiotix S.A.) and CI (Cigna Corporation) are both stocks. Both are in the Healthcare sector — NBTX in Biotechnology, CI in Healthcare Plans. Over the past 5 years, NBTX returned 19.56%/yr vs 5.83%/yr for CI. At a 0.02 correlation, their price movements are largely independent.

Performance

NBTX vs. CI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nanobiotix S.A. (NBTX) and Cigna Corporation (CI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, NBTX achieves a 52.38% return, which is significantly higher than CI's 3.65% return.

NBTX

• 1D: -2.87%
• 1M: -14.09%
• YTD: 52.38%
• 6M: 53.98%
• 1Y: 688.14%
• 3Y*: 85.89%
• 5Y*: 19.56%
• 10Y*: —

CI

• 1D: 1.01%
• 1M: -0.88%
• YTD: 3.65%
• 6M: 3.51%
• 1Y: -8.28%
• 3Y*: 2.81%
• 5Y*: 5.83%
• 10Y*: 9.35%

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

NBTX vs. CI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
NBTX Nanobiotix S.A.	52.38%	705.57%	-60.58%	98.37%	-54.69%	-50.91%	-9.09%
CI Cigna Corporation	3.65%	1.72%	-6.27%	-7.97%	46.68%	12.29%	-2.10%

Correlation

The correlation between NBTX and CI is -0.01, 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	-0.01
Correlation (3Y) Calculated over the trailing 3-year period	0.02
Correlation (5Y) Calculated over the trailing 5-year period	0.01
Correlation (All Time) Calculated using the full available price history since Dec 11, 2020	0.02

Fundamentals

EPS NBTX : -€1.80 CI : $23.59
PS Ratio NBTX : 30.49 CI : 0.27
Total Revenue (TTM) NBTX : €47.94M CI : $277.94B
Gross Profit (TTM) NBTX : €47.94M CI : $19.38B
EBITDA (TTM) NBTX : -€55.82M CI : $10.03B

Return for Risk

NBTX vs. CI — Risk / Return Rank

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

NBTX

NBTX Risk / Return Rank: 97
NBTX Sharpe Ratio Rank: 99
NBTX Sortino Ratio Rank: 96
NBTX Omega Ratio Rank: 95
NBTX Calmar Ratio Rank: 99
NBTX Martin Ratio Rank: 98

CI

CI Risk / Return Rank: 30
CI Sharpe Ratio Rank: 31
CI Sortino Ratio Rank: 29
CI Omega Ratio Rank: 29
CI Calmar Ratio Rank: 32
CI Martin Ratio Rank: 32

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.

NBTX vs. CI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nanobiotix S.A. (NBTX) and Cigna Corporation (CI). 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.

	NBTX	CI	Difference
Sharpe ratio: Return per unit of total volatility	6.43	-0.25	+6.68
Sortino ratio: Return per unit of downside risk	4.31	-0.11	+4.42
Omega ratio: Gain probability vs. loss probability	1.55	0.98	+0.56
Calmar ratio: Return relative to maximum drawdown	13.82	-0.31	+14.14
Martin ratio: Return relative to average drawdown	32.01	-0.56	+32.58

NBTX vs. CI - Sharpe Ratio Comparison

The current NBTX Sharpe Ratio is 6.43, which is higher than the CI Sharpe Ratio of -0.25. The chart below compares the historical Sharpe Ratios of NBTX and CI, 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

NBTX vs. CI - Drawdown Comparison

The maximum NBTX drawdown since its inception was -89.94%, which is greater than CI's maximum drawdown of -84.34%. Use the drawdown chart below to compare losses from any high point for NBTX and CI.

Drawdown Indicators

	NBTX	CI	Difference
Max Drawdown Largest peak-to-trough decline	-89.94%	-84.34%	-5.60%
Max Drawdown (1Y) Largest decline over 1 year	-50.25%	-26.54%	-23.71%
Max Drawdown (3Y) Largest decline over 3 years	-73.88%	-32.10%	-41.78%
Max Drawdown (5Y) Largest decline over 5 years	-86.80%	-32.10%	-54.70%
Max Drawdown (10Y) Largest decline over 10 years	—	-42.47%	—
Current Drawdown Current decline from peak	-36.03%	-20.30%	-15.73%
Average Drawdown Average peak-to-trough decline	-57.32%	-18.82%	-38.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.66%	14.68%	+6.98%

Volatility

NBTX vs. CI - Volatility Comparison

Nanobiotix S.A. (NBTX) has a higher volatility of 15.64% compared to Cigna Corporation (CI) at 8.10%. This indicates that NBTX's price experiences larger fluctuations and is considered to be riskier than CI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	NBTX	CI	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.64%	8.10%	+7.54%
Volatility (6M) Calculated over the trailing 6-month period	64.77%	18.89%	+45.88%
Volatility (1Y) Calculated over the trailing 1-year period	108.20%	33.41%	+74.79%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	136.77%	28.45%	+108.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	131.33%	30.77%	+100.56%

Dividends

NBTX vs. CI - Dividend Comparison

NBTX has not paid dividends to shareholders, while CI's dividend yield for the trailing twelve months is around 2.18%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CI Cigna Corporation	2.18%	2.19%	2.03%	1.64%	1.35%	1.74%	0.02%	0.02%	0.02%	0.02%	0.03%	0.03%
NBTX Nanobiotix S.A.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both NBTX and CI in my portfolio?

NBTX and CI have a correlation of -0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, NBTX or CI?

NBTX has higher volatility (15.64%) compared to CI (8.10%). In terms of maximum drawdown, NBTX dropped -89.94% vs CI's -84.34%.

Which has better risk-adjusted returns?

NBTX currently has the higher Sharpe Ratio (6.43 vs -0.25), 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.