Net Income (TTM)

What is Net Income (TTM)?

Net income is the last line on the income statement, which is why people call it the bottom line. You start with revenue at the top, subtract the cost of goods sold to get gross profit, subtract operating expenses to get operating income, then subtract interest on debt and income taxes, and adjust for anything left over (gains or losses on asset sales, write-downs, income from minority stakes, and similar non-operating items). What survives all of that is net income: the profit the company actually keeps and can either pay out as dividends or reinvest in the business.

Because net income sits below every other profit line, it carries everything those higher lines exclude. Operating income tells you whether the core business is profitable. Net income tells you whether the company as a whole, with its specific debt load, its specific tax situation, and whatever unusual events happened during the year, turned a profit for its owners. That makes it the most complete profit figure, but also the noisiest, because a single large tax adjustment or asset write-down can swing it sharply even when the underlying business has not changed.

The trailing twelve months (TTM) convention sums the four most recently reported quarters, which smooths out seasonality and gives a current read without waiting for the annual report. For companies that report in a currency other than US dollars, including foreign businesses with US listings or ADRs, the figure is converted to USD so it lines up with domestic peers. SledgeKey uses point-in-time data, meaning the net income shown for any past date is the figure that had actually been disclosed by then, not a later restatement.

Formula

The same result can be written the long way as revenue minus every expense the company recorded over the period. Two parts of this calculation deserve attention. Interest expense reflects how the company is financed, so two otherwise identical businesses with different debt loads will report different net income. Taxes reflect jurisdiction, credits, and timing, and a one-time tax benefit can flatter a single year. The non-operating bucket is where surprises hide: a large goodwill impairment or a gain on selling a division can dominate net income for a quarter and tell you almost nothing about ongoing profitability. Reading net income alongside operating income is the standard way to separate the durable profit from the one-time noise.

How to Interpret Net Income (TTM)

The first question is simply whether net income is positive. A company with consistently positive net income across several trailing-twelve-month periods has demonstrated that its whole model, financing and taxes included, works. Persistent losses are not automatically disqualifying, since many young growth companies invest ahead of profit by design, but they raise the bar on every other part of the analysis.

As a percentage of revenue, net income becomes net margin, and that is usually the more useful comparison because absolute dollars say nothing without scale. Net margins vary enormously by sector. Software and pharmaceutical businesses can run net margins above 20 percent; grocers and airlines often operate in the low single digits even in good years. Unlike operating income, net income is reported in standard form by banks and insurers, so it remains usable for financial-sector companies where margin-based operating metrics break down.

The main pitfall is treating one quarter of net income as a clean signal. Earnings quality matters: a company can post strong net income built on a tax benefit, a divestiture gain, or aggressive accounting that does not repeat. Cross-checking net income against operating cash flow is the classic test. When reported profit consistently runs well above the cash the business actually generates, that gap is worth understanding before trusting the bottom line.

Why Net Income (TTM) Matters for Investors

Net income is the input to the two numbers most investors look at first. Divide it by shares outstanding and you get earnings per share (EPS); divide the share price by EPS and you get the price-to-earnings ratio, the most widely quoted valuation multiple in the market. It also drives book value over time: every dollar of net income that is not paid out as a dividend is added to retained earnings, which compounds shareholder equity and, for the best businesses, funds future growth without new outside capital. When Warren Buffett talks about a business that compounds intrinsic value, he is describing a company that earns a high return on the net income it retains and reinvests.

Using Net Income (TTM) in Stock Screening

The most common use is a quality gate. Requiring positive net income over the most recent trailing twelve months, or over each of the last several years, removes companies that have not yet proven they can earn a profit and leaves a universe of established businesses. From there, net income combines naturally with valuation: a classic value screen pairs positive and growing net income with a P/E ratio below the market median, looking for profitable companies the market is pricing cheaply. A quality-growth screen instead requires net margin above a sector-appropriate threshold (say 10 percent) alongside multi-year net-income growth, isolating businesses that are both profitable and expanding. Benjamin Graham's defensive-investor criteria, the intellectual root of value screening, required a long record of positive earnings before a stock could qualify at all.

Backtesting with Net Income (TTM)

Profitability has been one of the more durable signals in the academic literature. Robert Novy-Marx and others have shown that profitable companies, measured at various points down the income statement, have tended to outperform unprofitable ones over long horizons after adjusting for risk, and screens that simply exclude persistent money-losers have historically sidestepped a meaningful share of the worst outcomes. The strength of any such backtest depends entirely on point-in-time data integrity. Net income is one of the most frequently restated figures in financial reporting, because tax adjustments, discontinued operations, and accounting corrections all flow through the bottom line. Using today's restated numbers on historical decision dates would let a backtest act on information that was not available at the time, which inflates results in a way that never repeats in live trading. SledgeKey anchors every observation to the date the data was actually published, so the net income behind any historical screen is the figure the market genuinely had in hand.

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