GILD vs. LYB

Last updated Jun 6, 2026

GILD (Gilead Sciences, Inc.) and LYB (LyondellBasell Industries N.V.) are both stocks. GILD operates in Drug Manufacturers - General (Healthcare), while LYB operates in Specialty Chemicals (Basic Materials). Over the past 10 years, GILD returned 7.71%/yr vs 5.29%/yr for LYB. At a 0.26 correlation, their price movements are largely independent.

Performance

GILD vs. LYB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Gilead Sciences, Inc. (GILD) and LyondellBasell Industries N.V. (LYB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, GILD achieves a 5.83% return, which is significantly lower than LYB's 52.35% return. Over the past 10 years, GILD has outperformed LYB with an annualized return of 7.71%, while LYB has yielded a comparatively lower 5.29% annualized return.

GILD

• 1D: -0.02%
• 1M: -1.65%
• YTD: 5.83%
• 6M: 7.86%
• 1Y: 17.90%
• 3Y*: 23.34%
• 5Y*: 18.21%
• 10Y*: 7.71%

LYB

• 1D: -2.54%
• 1M: -9.18%
• YTD: 52.35%
• 6M: 52.17%
• 1Y: 22.89%
• 3Y*: -4.03%
• 5Y*: -4.78%
• 10Y*: 5.29%

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

GILD vs. LYB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
GILD Gilead Sciences, Inc.	5.83%	36.59%	18.68%	-1.99%	23.63%	29.95%	-6.70%	7.88%	-9.92%	2.96%
LYB LyondellBasell Industries N.V.	52.35%	-35.96%	-17.38%	20.70%	-0.98%	5.07%	2.64%	44.63%	-21.69%	33.72%

Correlation

The correlation between GILD and LYB is 0.03, 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	0.03
Correlation (3Y) Calculated over the trailing 3-year period	0.14
Correlation (5Y) Calculated over the trailing 5-year period	0.18
Correlation (10Y) Calculated over the trailing 10-year period	0.20
Correlation (All Time) Calculated using the full available price history since Apr 29, 2010	0.26

Over the past year, the correlation between GILD and LYB has dropped to 0.03 - well below their long-term average of 0.26, suggesting their price drivers have been diverging.

Fundamentals

EPS GILD : $7.35 LYB : -$3.19
PS Ratio GILD : 5.45 LYB : 0.70
Total Revenue (TTM) GILD : $29.74B LYB : $22.48B
Gross Profit (TTM) GILD : $18.74B LYB : -$4.33B
EBITDA (TTM) GILD : $12.88B LYB : $935.00M

Return for Risk

GILD vs. LYB — Risk / Return Rank

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

GILD

GILD Risk / Return Rank: 63
GILD Sharpe Ratio Rank: 66
GILD Sortino Ratio Rank: 61
GILD Omega Ratio Rank: 57
GILD Calmar Ratio Rank: 64
GILD Martin Ratio Rank: 65

LYB

LYB Risk / Return Rank: 56
LYB Sharpe Ratio Rank: 60
LYB Sortino Ratio Rank: 55
LYB Omega Ratio Rank: 54
LYB Calmar Ratio Rank: 57
LYB Martin Ratio Rank: 55

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.

GILD vs. LYB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Gilead Sciences, Inc. (GILD) and LyondellBasell Industries N.V. (LYB). 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.

	GILD	LYB	Difference
Sharpe ratio: Return per unit of total volatility	0.77	0.54	+0.22
Sortino ratio: Return per unit of downside risk	1.30	1.05	+0.24
Omega ratio: Gain probability vs. loss probability	1.15	1.13	+0.02
Calmar ratio: Return relative to maximum drawdown	1.14	0.71	+0.43
Martin ratio: Return relative to average drawdown	2.82	1.26	+1.56
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GILD vs. LYB - Sharpe Ratio Comparison

The current GILD Sharpe Ratio is 0.77, which is higher than the LYB Sharpe Ratio of 0.54. The chart below compares the historical Sharpe Ratios of GILD and LYB, 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

	GILD	LYB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.77	0.54	+0.22
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.76	-0.15	+0.91
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.30	0.14	+0.16
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.40	-0.02

Drawdowns

GILD vs. LYB - Drawdown Comparison

The maximum GILD drawdown since its inception was -70.83%, which is greater than LYB's maximum drawdown of -63.26%. Use the drawdown chart below to compare losses from any high point for GILD and LYB.

Drawdown Indicators

	GILD	LYB	Difference
Max Drawdown Largest peak-to-trough decline	-70.83%	-63.26%	-7.57%
Max Drawdown (1Y) Largest decline over 1 year	-17.65%	-35.45%	+17.80%
Max Drawdown (3Y) Largest decline over 3 years	-26.59%	-55.35%	+28.76%
Max Drawdown (5Y) Largest decline over 5 years	-26.59%	-55.35%	+28.76%
Max Drawdown (10Y) Largest decline over 10 years	-30.47%	-63.26%	+32.79%
Current Drawdown Current decline from peak	-16.63%	-28.50%	+11.87%
Average Drawdown Average peak-to-trough decline	-22.16%	-15.11%	-7.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.13%	19.88%	-12.75%

Volatility

GILD vs. LYB - Volatility Comparison

The current volatility for Gilead Sciences, Inc. (GILD) is 6.88%, while LyondellBasell Industries N.V. (LYB) has a volatility of 7.40%. This indicates that GILD experiences smaller price fluctuations and is considered to be less risky than LYB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GILD	LYB	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.88%	7.40%	-0.52%
Volatility (6M) Calculated over the trailing 6-month period	18.53%	34.97%	-16.44%
Volatility (1Y) Calculated over the trailing 1-year period	26.31%	46.09%	-19.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.02%	32.84%	-8.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.48%	36.75%	-11.27%

Dividends

GILD vs. LYB - Dividend Comparison

GILD's dividend yield for the trailing twelve months is around 2.47%, less than LYB's 6.39% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GILD Gilead Sciences, Inc.	2.47%	2.57%	3.33%	3.70%	3.40%	3.91%	4.67%	3.88%	3.65%	2.90%	2.57%	1.27%
LYB LyondellBasell Industries N.V.	6.39%	12.59%	7.10%	5.20%	11.92%	4.81%	4.58%	20.27%	4.81%	3.22%	3.88%	3.50%

Financials

Frequently Asked Questions

Can I hold both GILD and LYB in my portfolio?

GILD and LYB have a correlation of 0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, GILD or LYB?

LYB has higher volatility (7.40%) compared to GILD (6.88%). In terms of maximum drawdown, GILD dropped -70.83% vs LYB's -63.26%.

Which has better risk-adjusted returns?

GILD currently has the higher Sharpe Ratio (0.77 vs 0.54), 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.