CNC vs. COST

Last updated Jun 4, 2026

CNC (Centene Corporation) and COST (Costco Wholesale Corporation) are both stocks. CNC operates in Healthcare Plans (Healthcare), while COST operates in Discount Stores (Consumer Defensive). Over the past 10 years, CNC returned 6.23%/yr vs 22.34%/yr for COST. At a 0.25 correlation, their price movements are largely independent.

Performance

CNC vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Centene Corporation (CNC) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CNC achieves a 44.71% return, which is significantly higher than COST's 11.85% return. Over the past 10 years, CNC has underperformed COST with an annualized return of 6.23%, while COST has yielded a comparatively higher 22.34% annualized return.

CNC

• 1D: -0.73%
• 1M: 11.18%
• YTD: 44.71%
• 6M: 53.44%
• 1Y: 7.55%
• 3Y*: -3.59%
• 5Y*: -3.58%
• 10Y*: 6.23%

COST

• 1D: 0.79%
• 1M: -5.03%
• YTD: 11.85%
• 6M: 4.58%
• 1Y: -8.37%
• 3Y*: 25.00%
• 5Y*: 21.24%
• 10Y*: 22.34%

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

CNC vs. COST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CNC Centene Corporation	44.71%	-32.07%	-18.37%	-9.51%	-0.47%	37.26%	-4.52%	9.05%	14.29%	78.52%
COST Costco Wholesale Corporation	11.85%	-5.39%	39.62%	49.00%	-19.05%	51.82%	32.67%	45.70%	10.60%	22.37%

Correlation

The correlation between CNC and COST 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	0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (10Y) Calculated over the trailing 10-year period	0.19
Correlation (All Time) Calculated using the full available price history since Dec 14, 2001	0.25

Over the past year, the correlation between CNC and COST has dropped to 0.01 - well below their long-term average of 0.25, suggesting their price drivers have been diverging.

Fundamentals

EPS CNC : -$13.07 COST : $26.51
PS Ratio CNC : 0.15 COST : 1.09
Total Revenue (TTM) CNC : $198.10B COST : $293.59B
Gross Profit (TTM) CNC : $29.57B COST : $11.12B
EBITDA (TTM) CNC : -$5.11B COST : $12.48B

Return for Risk

CNC vs. COST — Risk / Return Rank

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

CNC

CNC Risk / Return Rank: 45
CNC Sharpe Ratio Rank: 45
CNC Sortino Ratio Rank: 44
CNC Omega Ratio Rank: 50
CNC Calmar Ratio Rank: 43
CNC Martin Ratio Rank: 42

COST

COST Risk / Return Rank: 22
COST Sharpe Ratio Rank: 21
COST Sortino Ratio Rank: 19
COST Omega Ratio Rank: 20
COST Calmar Ratio Rank: 26
COST Martin Ratio Rank: 23

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.

CNC vs. COST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Centene Corporation (CNC) and Costco Wholesale Corporation (COST). 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.

	CNC	COST	Difference
Sharpe ratio Return per unit of total volatility	0.12	-0.44	+0.56
Sortino ratio Return per unit of downside risk	0.60	-0.50	+1.09
Omega ratio Gain probability vs. loss probability	1.11	0.94	+0.17
Calmar ratio Return relative to maximum drawdown	0.14	-0.44	+0.58
Martin ratio Return relative to average drawdown	0.22	-0.88	+1.10
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CNC vs. COST - Sharpe Ratio Comparison

The current CNC Sharpe Ratio is 0.12, which is higher than the COST Sharpe Ratio of -0.44. The chart below compares the historical Sharpe Ratios of CNC and COST, 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

	CNC	COST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.12	-0.44	+0.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.09	0.94	-1.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.16	1.02	-0.86
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.59	-0.19

Drawdowns

CNC vs. COST - Drawdown Comparison

The maximum CNC drawdown since its inception was -74.07%, which is greater than COST's maximum drawdown of -53.39%. Use the drawdown chart below to compare losses from any high point for CNC and COST.

Drawdown Indicators

	CNC	COST	Difference
Max Drawdown Largest peak-to-trough decline	-74.07%	-53.39%	-20.68%
Max Drawdown (1Y) Largest decline over 1 year	-55.50%	-18.95%	-36.55%
Max Drawdown (3Y) Largest decline over 3 years	-68.65%	-20.74%	-47.91%
Max Drawdown (5Y) Largest decline over 5 years	-74.07%	-31.40%	-42.67%
Max Drawdown (10Y) Largest decline over 10 years	-74.07%	-31.40%	-42.67%
Current Drawdown Current decline from peak	-38.75%	-12.11%	-26.64%
Average Drawdown Average peak-to-trough decline	-22.14%	-13.36%	-8.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	33.84%	9.86%	+23.98%

Volatility

CNC vs. COST - Volatility Comparison

Centene Corporation (CNC) has a higher volatility of 10.45% compared to Costco Wholesale Corporation (COST) at 8.05%. This indicates that CNC's price experiences larger fluctuations and is considered to be riskier than COST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CNC	COST	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.45%	8.05%	+2.40%
Volatility (6M) Calculated over the trailing 6-month period	36.05%	14.83%	+21.22%
Volatility (1Y) Calculated over the trailing 1-year period	64.10%	19.12%	+44.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	39.40%	22.73%	+16.67%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	38.48%	21.95%	+16.53%

Dividends

CNC vs. COST - Dividend Comparison

CNC has not paid dividends to shareholders, while COST's dividend yield for the trailing twelve months is around 0.56%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CNC Centene Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
COST Costco Wholesale Corporation	0.56%	0.59%	0.49%	2.87%	0.76%	0.54%	3.38%	0.86%	1.08%	4.81%	1.09%	4.06%

Financials

CNC vs. COST - Profitability Comparison

The chart below illustrates the profitability comparison between Centene Corporation and Costco Wholesale Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

CNC - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Centene Corporation reported a gross profit of 10.94B and revenue of 49.94B. Therefore, the gross margin over that period was 21.9%.

COST - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported a gross profit of -17.68B and revenue of 70.53B. Therefore, the gross margin over that period was -25.1%.

CNC - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Centene Corporation reported an operating income of 1.86B and revenue of 49.94B, resulting in an operating margin of 3.7%.

COST - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported an operating income of 2.82B and revenue of 70.53B, resulting in an operating margin of 4.0%.

CNC - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Centene Corporation reported a net income of 1.54B and revenue of 49.94B, resulting in a net margin of 3.1%.

COST - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported a net income of 2.19B and revenue of 70.53B, resulting in a net margin of 3.1%.

Frequently Asked Questions

Can I hold both CNC and COST in my portfolio?

CNC and COST 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, CNC or COST?

CNC has higher volatility (10.45%) compared to COST (8.05%). In terms of maximum drawdown, CNC dropped -74.07% vs COST's -53.39%.

Which has better risk-adjusted returns?

CNC currently has the higher Sharpe Ratio (0.12 vs -0.44), 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.