Westlake PE ratio WLK

Share price divided by earnings per share over the last twelve months, since 2012.

Today, Oct 23, 2026: n/m; losses over the last year
Last meaningful: 25.4×; Aug 2025
10-year median: 14.2×
10-year range: 3.7× to 192×
Peer median: 18.5×

Westlake has no meaningful PE ratio today: it lost $9.60 a share over the last twelve months, and a PE needs earnings.

It was last meaningful in Aug 2025, at 25.4×.

On the days it had one over the last ten years, its median was 14.2×, from 3.7× in Sep 2022 to 192× in Nov 2024.

PE ratio over time

median 14.2×

The dashed line is the 10-year median and the shaded band the middle half of its days.

Open the interactive chart, with overlays and comparisons

Year by year

Year	End of year	Low	High
2025	25.4×	19.1×	171×
2024	166×	14.4×	192×
2023	14.9×	5.3×	15.1×
2022	5.0×	3.7×	9.4×
2021	8.5×	8.0×	39.2×
2020	36.3×	10.1×	37.1×
2019	19.2×	5.4×	20.5×
2018	5.0×	4.8×	24.8×
2017	23.2×	18.9×	24.5×
2016	17.8×	7.9×	18.5×
2015	10.1×	9.2×	15.4×
2014	9.9×	8.7×	16.2×
2013	15.1×	14.1×	19.5×
2012	16.4×	12.0×	16.6×

Against its peers

Companies in Chemicals - Specialty nearest Westlake's size, closest first, today.

Company	PE ratio
WLKWestlake	n/m
NEUNewmarket	18.7×
AXTAAxalta Coating Systems	21.1×
CLXClorox	17.9×
SXTSensient Technologies	35.8×
RPMRPM International	18.3×
LYBLyondellBasell Industries	n/m
IFFInternational Flavors & Fragrances	82.6×
PPGPPG Industries	15.8×
REXREX AMERICAN RESOURCES	10.9×
APDAir Products and Chemicals	n/m
Peer median	18.5×

What the PE ratio tells you

Share price divided by earnings per share over the last twelve months. It is the price tag on a dollar of profit: 20× means you pay $20 for $1 of yearly earnings.

Blank while earnings are negative. A very low PE can mean the market expects profits to fall, so read it with growth and the company's own history.

More on Westlake

Valuation data, not investment advice. Prices as of Oct 23, 2026. Reported figures come from the company's filings with the SEC.