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P/E Ratio Screener — Find Undervalued Stocks by Earnings Multiple
Mid and large-cap stocks ranked by trailing P/E ratio, cheapest first, with every row labeled by a valuation tier. Instantly see which companies trade below the market's 15–25x fair-value band — then pair it with the ROE Screener and FCF Yield Screener to separate real bargains from value traps.
How to Read P/E Ratio Data
The price-to-earnings ratio answers a simple question: how many dollars are you paying for every dollar of a company's annual profit? A P/E of 12x means the market values the business at twelve years of its current earnings. It is the single most widely quoted valuation multiple in investing — a fast way to gauge whether a stock is cheap, fair, or expensive relative to the profit it actually generates.
The valuation tier badge is the bookmark feature of this screener. Rather than making you eyeball a wall of multiples, every row is labeled: Deep Value below 10x, Value for 10–15x, Fair Value for 15–25x, Elevated for 25–40x, and Speculative above 40x. Filter by sector, market cap, or a P/E range and the tiers stay put, so you can scan an industry and immediately see which names trade below the market's fair-value band and which price in rich growth expectations.
Read the P/E with two guardrails. First, growth: a high multiple is not automatically expensive if earnings are compounding fast, and a low multiple is not automatically cheap if profits are about to fall. That is why the forward P/E sits beside the trailing figure — a forward P/E well below the trailing one signals the market expects earnings to grow. Second, sector: banks and energy names structurally trade at low multiples while software and consumer staples command higher ones, so always compare a stock to its own peers, not to the market average.
Trailing vs. Forward P/E
The trailing P/E divides today's price by the last twelve months of reported earnings — it is backward-looking but based on hard facts. The forward P/E divides price by analysts' estimate for the next twelve months — it is forward-looking but depends on forecasts that can be wrong. When the forward P/E is meaningfully lower than the trailing P/E, the market expects earnings to rise, which can make a seemingly average multiple look cheap on next year's numbers. When the forward P/E is higher, analysts expect profits to shrink — a warning that a low trailing multiple may be a value trap. This screener shows both columns so you can see the gap at a glance.
When a Low P/E Is a Trap
A low P/E is not automatically a buy signal. Several situations produce a temporarily cheap multiple that misleads: a cyclical company at the peak of its earnings cycle, where profits are about to roll over; a business in structural decline whose earnings are shrinking faster than the price; a firm booking a one-time gain that inflates trailing profit and deflates the ratio; or a highly leveraged company where a small drop in earnings would wipe out the equity cushion. Always confirm the earnings are durable — check the forward estimate, the debt load, and the consistency of profit over several years — before treating a low P/E as a sign of value.
Frequently asked questions
What P/E ratio is considered undervalued?
A trailing P/E below 15x has historically been treated as value territory, and below 10x — the 'Deep Value' tier in this screener — is genuinely cheap on an earnings basis. But context matters: a 12x multiple is cheap for a steady grower and expensive for a business whose earnings are declining. Always confirm the low multiple is attached to durable, growing profits rather than a peak-cycle or one-time earnings number.
Why does P/E vary so much between sectors?
Different industries have different growth rates, capital intensity, and earnings stability, and the market prices those differences into the multiple. Software and consumer-staples companies with recurring revenue and high margins command higher P/E ratios, while banks, energy, and materials names trade at structurally lower ones because their earnings are more cyclical or capital-hungry. That is why comparing a stock's P/E to its sector peers is far more useful than comparing it to the market average.
How does this screener get its data?
The screener pulls a curated list of roughly 90 mid and large-cap stocks across sectors and fetches each company's trailing P/E, forward P/E, EPS, price, and market cap from Yahoo Finance. It computes the valuation tier server-side from the P/E thresholds and sorts cheapest first. Companies with a trailing loss or a P/E above 150x are excluded because those multiples are distorted. Data refreshes hourly.
Can the P/E ratio be negative?
A stock with negative earnings technically has a negative P/E, but the ratio becomes meaningless — you cannot sensibly value a company at a negative multiple of its losses. This screener excludes any company with a trailing loss for exactly that reason. For unprofitable or pre-earnings companies, use a price-to-sales, EV/EBITDA, or EV/revenue screen instead, since those work even when earnings are negative.
Should I buy a stock just because it has a low P/E?
No. A low P/E is a valuation filter, not a buy signal on its own. The cheapest stocks are sometimes cheap for good reason — declining earnings, heavy debt, or a broken business model. Use this screener to build a shortlist of low-multiple names, then run a DCF, check the forward P/E, and review earnings quality to judge whether the profits are durable. Click any ticker to open the full Basis Report analysis for that step.
How do I find the full analysis for a stock in the screener?
Click the ticker symbol in the first column to open the Basis Report stock intelligence page for that company. From there you can run a full DCF valuation, review earnings quality scores, see analyst ratings, and generate a complete research report. The P/E screener is the entry point; the full report gives you the depth to decide whether a low multiple is a bargain or a trap.