Trinseo PLC (TSE) P/E Ratio History
Deep ValueTrading at -0.0x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2015–2022
Loading P/E history...
P/E Ratio Analysis
As of June 28, 2026, Trinseo PLC (TSE) trades at a price-to-earnings ratio of -0.0x, with a stock price of $0.13 and trailing twelve-month earnings per share of $-11.45.
The current P/E is 100% below its 5-year average of 26.5x. Over the past five years, TSE's P/E has ranged from a low of 4.7x to a high of 301.2x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Basic Materials sector median P/E of 22.8x, TSE trades at a 100% discount to its sector peers. The sector includes 124 companies with P/E ratios ranging from 1.0x to 151.1x.
Relative to the broader market, TSE trades at a notable discount to the S&P 500 median P/E of 25.3x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our TSE DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
TSE Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
TSE P/E vs Peers
Specialty polymers and engineered plastics peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $8B | 17.2 | 5.36Best | -47% | |
| $3B | 42.6 | - | -52% | |
| $546M | 11.3Lowest | 5.99 | +11%Best |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
TSE Historical P/E Data (2015–2022)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2022 Q3 | Sep 30 2022 | $18.32 | $1.24 | 14.8x | -34% |
| FY2022 Q2 | - | $38.46 | $6.95 | 5.5x | -75% |
| FY2022 Q1 | - | $47.92 | $9.76 | 4.9x | -78% |
| FY2021 Q4 | Dec 31 2021 | $52.46 | $11.13 | 4.7x | -79% |
| FY2021 Q3 | - | $53.98 | $9.70 | 5.6x | -75% |
| FY2021 Q2 | Jun 30 2021 | $59.84 | $10.09 | 5.9x | -74% |
| FY2021 Q1 | Mar 31 2021 | $63.67 | $2.92 | 21.8x | -3% |
| FY2020 Q4 | - | $51.21 | $0.17 | 301.2x | +1243% |
| FY2020 Q1 | - | $18.11 | $0.44 | 41.2x | +84% |
| FY2019 Q4 | - | $37.21 | $2.24 | 16.6x | -26% |
| FY2019 Q3 | Sep 30 2019 | $42.95 | $2.08 | 20.7x | -8% |
| FY2019 Q2 | Jun 30 2019 | $42.34 | $3.24 | 13.1x | -42% |
| FY2019 Q1 | Mar 31 2019 | $45.30 | $4.80 | 9.4x | -58% |
| FY2018 Q4 | Dec 31 2018 | $45.78 | $6.65 | 6.9x | -69% |
| FY2018 Q3 | Sep 30 2018 | $78.30 | $9.30 | 8.4x | -62% |
| FY2018 Q2 | Jun 30 2018 | $70.95 | $8.32 | 8.5x | -62% |
| FY2018 Q1 | Mar 31 2018 | $74.05 | $7.42 | 10.0x | -55% |
| FY2017 Q4 | Dec 31 2017 | $72.60 | $7.30 | 9.9x | -56% |
| FY2017 Q3 | Sep 30 2017 | $67.10 | $6.39 | 10.5x | -53% |
| FY2017 Q2 | Jun 30 2017 | $68.70 | $7.08 | 9.7x | -57% |
| FY2017 Q1 | Mar 31 2017 | $67.10 | $7.74 | 8.7x | -61% |
| FY2016 Q4 | Dec 31 2016 | $59.30 | $6.71 | 8.8x | -61% |
| FY2016 Q3 | Sep 30 2016 | $56.56 | $5.87 | 9.6x | -57% |
| FY2016 Q2 | - | $42.93 | $5.50 | 7.8x | -65% |
| FY2016 Q1 | - | $36.81 | $3.52 | 10.5x | -53% |
| FY2015 Q4 | - | $28.20 | $2.73 | 10.3x | -54% |
| FY2015 Q3 | Sep 30 2015 | $25.25 | $1.24 | 20.4x | -9% |
Average P/E for displayed period: 22.4x
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
11+ years return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
TSE — Frequently Asked Questions
Quick answers to the most common questions about buying TSE stock.
What is TSE's P/E ratio?
Trinseo PLC (TSE) trailing twelve-month P/E ratio is -0.0x, based on TTM diluted EPS of $-11.45. The 5-year average P/E is 26.5x and the historical range spans 4.7x to 301.2x.
Is TSE stock overvalued or undervalued?
TSE current P/E: -0.0x. 5-year average P/E: 26.5x. Percentile: 0th.
Is TSE stock expensive?
TSE is fairly valued relative to its own history. The current P/E of -0.0x is near the 5-year average of 26.5x (0th percentile of historical range).
What is TSE's historical P/E range?
Over the past 5 years, TSE's P/E ratio has ranged from 4.7x to 301.2x, with a median of 9.9x and an average of 26.5x. The current P/E of -0.0x places the stock at the 0th percentile of this range. Full historical data spans 2015–2022.
How does TSE's P/E compare to the S&P 500?
TSE current P/E: -0.0x. S&P 500 median P/E: 25.3x.
How does TSE's valuation compare to Basic Materials peers?
Trinseo PLC P/E of -0.0x can be benchmarked against Basic Materials peers in the comparison table on this page.
What is TSE's PEG ratio?
TSE PEG ratio is N/A, based on a P/E of -0.0x and EPS growth of 50.3%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is TSE's earnings yield?
TSE earnings yield is N/A, the inverse of its -0.0x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.