ioneer Ltd (IONR) P/E Ratio History
Historical price-to-earnings valuation from 2026 to 2026
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IONR Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 8, 2026, ioneer Ltd (IONR) trades at a price-to-earnings ratio of -1002.5x, with a stock price of $4.01 and trailing twelve-month earnings per share of $-0.20.
Compared to the Basic Materials sector median P/E of 23.4x, IONR trades at a 4384% discount to its sector peers. The sector includes 125 companies with P/E ratios ranging from 2.0x to 144.2x.
Relative to the broader market, IONR trades at a notable discount to the S&P 500 median P/E of 25.1x. 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 IONR 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.
IONR P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $35B | 15.9 | - | -32% | |
| $932M | 6.5Lowest | - | +428%Best | |
| $1B | 34.4 | - | -47% | |
| $1.5T | 381.3 | 9.84Best | -47% | |
| $71B | 24.0 | - | -49% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
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View ValuationCompare IONR vs LIN
Side-by-side business, growth, and profitability comparison vs Linde plc.
Start ComparisonIONR — Frequently Asked Questions
Quick answers to the most common questions about buying IONR stock.
Is IONR stock overvalued or undervalued?
IONR current P/E: -1002.5x. 5-year average P/E: N/A. Percentile: N/A.
How does IONR's valuation compare to peers?
ioneer Ltd P/E of -1002.5x compares to sector median of 23.4x. The discount suggests lower growth expectations or higher risk.
What is IONR's PEG ratio?
IONR PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2026-2026.