LyondellBasell (LYB)
S&P 500 · Materials · data since 2010-04-28 · last close 2026-09-09
LyondellBasell (LYB) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 13.2 | 17.4 | 41.8 | -7.4 | -10.7 | -21.0 | 16.7 | 5.9 | -0.9 | · | · | · |
| 2025 | 1.9 | 1.5 | -6.8 | -17.3 | -3.0 | 5.0 | 0.1 | -0.4 | -13.0 | -5.3 | 5.5 | -9.1 |
| 2024 | -1.0 | 6.5 | 3.3 | -2.3 | -0.6 | -2.5 | 4.0 | 0.6 | -2.8 | -9.4 | -4.0 | -9.4 |
| 2023 | 16.4 | -0.7 | -1.0 | 0.8 | -8.3 | 7.3 | 7.7 | 1.2 | -4.1 | -4.7 | 6.8 | -0.0 |
| 2022 | 4.9 | 0.5 | 7.0 | 3.1 | 7.8 | -19.0 | 1.9 | -5.6 | -9.3 | 1.6 | 12.7 | -2.3 |
| 2021 | -6.4 | 20.2 | 1.9 | -0.3 | 8.6 | -7.8 | -3.4 | 2.2 | -6.5 | -1.1 | -5.0 | 5.8 |
| 2020 | -17.6 | -6.8 | -30.6 | 16.8 | 10.0 | 4.6 | -4.9 | 6.3 | 7.7 | -2.9 | 25.8 | 7.7 |
| 2019 | 4.6 | -1.7 | -0.5 | 4.9 | -15.8 | 17.5 | -2.8 | -7.5 | 17.2 | 0.3 | 4.3 | 2.1 |
| 2018 | 8.6 | -9.7 | -1.4 | 0.1 | 6.0 | -1.2 | 0.9 | 1.8 | -8.3 | -12.9 | 4.5 | -9.9 |
| 2017 | 8.7 | -2.2 | 0.9 | -7.0 | -5.0 | 6.0 | 6.8 | 0.6 | 10.4 | 4.5 | 1.1 | 6.3 |
| 2016 | -10.3 | 3.9 | 6.7 | -3.4 | -0.5 | -8.5 | 1.1 | 6.0 | 2.2 | -1.4 | 14.7 | -5.0 |
| 2015 | -0.4 | 9.5 | 2.2 | 17.9 | -2.3 | 2.4 | -9.4 | -8.2 | -2.4 | 11.5 | 4.0 | -9.3 |
| 2014 | -1.9 | 12.6 | 1.0 | 4.8 | 7.6 | -1.9 | 8.8 | 8.3 | -5.0 | -15.7 | -13.3 | 0.7 |
| 2013 | 11.1 | -7.0 | 8.0 | -4.1 | 10.6 | -0.6 | 3.7 | 2.1 | 5.1 | 1.9 | 4.3 | 4.0 |
| 2012 | 32.7 | 0.2 | 1.7 | -4.3 | -4.6 | 2.0 | 10.6 | 10.6 | 5.8 | 3.4 | -0.5 | 14.8 |
| 2011 | 4.5 | 6.0 | 3.9 | 12.5 | -1.3 | -12.1 | 2.4 | -11.7 | -29.5 | 34.5 | 15.3 | -0.6 |
| 2010 | · | · | · | 1.4 | -20.3 | -9.1 | 11.5 | 13.9 | 16.6 | 12.4 | 8.8 | 17.8 |
| Avg | 4.3 | 3.1 | 2.4 | 0.9 | -1.3 | -2.3 | 3.3 | 1.5 | -1.0 | 1.0 | 5.3 | 0.9 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
LYB seasonality — average by calendar month
LyondellBasell has monthly history back to 2010. Its strongest month by median is January — positive in 10 of 16 years, median +4.5%, and higher in 6 of the last 9. September is the soft spot, down in 9 of 16 with a median of -2.6%. Across its full record it has closed 57% of months higher, swings ±9.9% in an average month and has fallen 68.2% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +4.3% | +3.1% | +2.4% | +0.9% | -1.3% | -2.3% | +3.3% | +1.5% | -1.0% | +1.0% | +5.3% | +0.8% |
| Win rate | 62%/16 | 62%/16 | 69%/16 | 53%/17 | 35%/17 | 41%/17 | 76%/17 | 71%/17 | 44%/16 | 50%/16 | 75%/16 | 50%/16 |
Win rate = share of positive months / sample size.
LYB risk & extremes
LYB drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was LyondellBasell's best month?+
LyondellBasell's strongest completed month on record is March 2026, at +41.76%.
What was LyondellBasell's worst month?+
Its weakest completed month on record is March 2020, at -30.55%.
Is LyondellBasell up this year?+
LyondellBasell is up 50.79% year to date, measured from its last close before 1 January.
What is LyondellBasell's 1-year return?+
+23.50% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is LyondellBasell's biggest drawdown?+
The deepest peak-to-trough fall on record is 68.2%, measured on month-end closes since 2010.
Which calendar month is historically best for LyondellBasell?+
November has the highest average return across every completed November since 2010. An average is not a forecast.
About LyondellBasell
LyondellBasell is an S&P 500 company, a materials business worth about $21 billion. It supplies the raw ingredients everyone else takes credit for — with price receipts on this site going back to 2010. And the long game: $100 at its first close here (2010) would be about $724 today.
Did you know?
- Its best month on record was March 2026 at +41.76%; its worst, March 2020 at -30.55%.
- It has closed July in the green 13 out of 17 times — not a promise, just a suspicious habit.
Trivia for entertainment — the numbers come from our price data; the jokes don't.