Cheap Stocks With Heavy Debt Need a Second Filter

A P/E ratio can’t see the balance sheet. It divides the share price by earnings per share, and both of those belong to shareholders. Lenders sit in front of shareholders. Their claim is invisible in the ratio.

So a screen for low P/E stocks has a blind spot built in. Two companies can show the same multiple while one of them owes several times its market value to banks and bondholders, and the screen will rank them side by side, with nothing on the results table to tell you which one has a refinancing due next year. Accept the blind spot, or cover it with a second filter?

Two ways to run the same screen

The first approach is P/E alone. Set a ceiling, sort ascending, and research whatever comes out. It’s simple. It catches every company the market is pricing cheaply, for any reason at all.

The second approach adds a leverage test. Three are common. Debt-to-equity compares what the company owes with the book value of its equity. Net debt to EBITDA subtracts cash from debt and divides by cash earnings. Interest coverage divides operating profit by the interest bill. You can use one or all three, and the thresholds should come from the industry, since a utility and a software company carry very different normal levels of debt-to-equity.

Two companies at ten times earnings

Here is the blind spot in numbers. Both companies are hypothetical. To keep the sums short, assume neither has meaningful depreciation, so operating profit and EBITDA are the same figure.

On a P/E screen they are twins. On EV to EBITDA, B is more than half again as expensive, because that ratio counts the debt as part of the price of the whole business, which is exactly what it is: someone buying all of B would pay 1,000 to shareholders and then owe 2,000 to lenders on top.

Now let rates move. Suppose B’s debt comes due and gets refinanced at 8%. Interest rises from 120 to 160. Pre-tax profit falls from 130 to 90. At the same tax rate, net income drops to about 69. At an unchanged share price, the P/E jumps from 10 to about 14.5, and Company A, which has no debt to refinance, hasn’t changed at all. Nothing about B’s stores, factories or customers moved. The financing did all of it.

What the debt filter costs you

It throws out real bargains. Some indebted companies are cheap because the market expects a disaster. Sometimes the disaster never comes. A business with steady cash flow, paying its debt down year by year, can see its equity value rise sharply as each dollar of debt retired becomes a dollar that belongs to shareholders, and those deleveraging stories are exactly the names a strict leverage filter removes. Cyclicals are the other casualty. At the bottom of a cycle their coverage looks awful. A year or two later it can look fine.

A debt filter also tilts the screen. Capital-light businesses pass easily. Utilities, real estate and telecom may barely show up, even when their debt is sensible for businesses with long-lived assets and predictable revenue, so a single threshold applied across every sector ends up screening for industry as much as for risk.

What it keeps out

The traps. A low P/E on a leveraged company often reflects doubt about whether the earnings will survive the next refinancing, a covenant test, or a slowdown that eats into a thin cushion of coverage. The market is pricing the risk that equity holders get diluted or wiped out. Dividends are exposed too. When cash gets tight, a board facing a large interest bill will usually protect the lenders first, so someone buying a cheap, leveraged stock for its yield can lose the payout and the price together.

That risk is lopsided. When a leveraged company does well, shareholders gain. When it does badly, a small fall in operating profit becomes a large fall in net income, because the interest bill doesn’t shrink, and a large enough fall can hand the business to the lenders. Screening on P/E alone means spotting those cases by hand. That’s slow. It’s also easy to get wrong. A low P/E is where the digging starts, and the debt filter does some of that digging up front.

The verdict depends on rates and your holding period

Low, stable rates make leverage cheap to carry. Refinancing is routine in that setting, and maturities tend to get rolled forward without much fuss. A P/E-only screen with a quick manual check of the balance sheet can work, and the bargains a debt filter would have removed have time to play out.

High or rising rates change the math. Every refinancing becomes a potential shock, as the Company B sum shows. Add the filter, and lean on coverage, since it moves first when borrowing costs climb.

Holding period matters just as much. A short-term trader cares about the next few months. A maturity wall two years out is far away. A holder planning to own the stock for five years will likely live through at least one refinancing, and should know what it could do to earnings. The longer you plan to hold, the stronger the case for the second filter.

For most people running a value screen, include it by default. Then loosen it on purpose when you have a specific reason to believe one company’s debt is manageable, such as a maturity schedule spread over many years, fixed-rate bonds locked in at low coupons, or cash flow that has covered the interest comfortably through a full downturn, and write that reason down next to the name.