Companies report two sets of profits, and the gap between them is the point. In the first half of 2025, the overwhelming majority of S&P 500 companies presented non-GAAP earnings alongside GAAP results in their releases, a practice the SEC has permitted, and policed, since codifying its view in the Compliance and Disclosure Interpretations updated in February 2019. Market Today publishes information, not investment advice; this explainer reads the mechanics, not the stocks.
The mechanics matter because the adjusted number is usually the higher one, and it is the number that travels. Headlines, consensus comparisons and conference-call talking points tend to run on the non-GAAP figure. The audited GAAP statements, filed later and read less, carry the costs that the release adjusted away.
What is the actual difference between GAAP and adjusted earnings?
GAAP earnings are computed under standardized accounting rules and audited; adjusted, or non-GAAP, earnings are management's own recalculation, typically excluding items management calls unusual, non-recurring or non-cash. The SEC requires the two to be presented with equal or greater prominence for GAAP, and requires a reconciliation showing every excluded item, per the SEC's non-GAP disclosure guidance in effect since 2016 and clarified in 2019. The reconciliation table, usually near the back of the release, is the most honest page in the document.
The classic exclusions are restructuring charges, litigation settlements, impairments and stock-based compensation. Each has a defensible logic: a factory closure is arguably not the ongoing business. The trouble starts when "arguably" quietly becomes "always." An charge that recurs every year, under a new name each time, is not an anomaly. It is a cost of doing business that the adjusted figure has agreed to forget.
Why do regulators allow a second, friendlier number?
Because the alternative was worse. Before the SEC formalized its approach in the 2016 interpretations, non-GAAP figures floated free of any standardized bridge, and companies could present a nearly unbounded range of "core" profits. The 2016 C&DI regime, updated again in February 2019, imposed two disciplines: equal or greater prominence for GAAP, and prohibition of misleading adjustments, such as excluding a normal, recurring operating expense. The rules made the practice comparable, not rare.
Regulators also drew lines on specific habits. Adjustments that isolate revenue only from "successful" products, or per-share figures tweaked faster than share counts change, sit outside the safe ground. The SEC's Division of Corporation Finance has sent comment letters on exactly these patterns for years, and the letters are public documents worth reading before trusting any single company's reconciliation.
Which adjustments deserve the most skepticism?
The recurring ones, and the ones that cut in only one direction. A short list of the usual suspects:
| Adjustment | Stated rationale | Question to ask |
|---|---|---|
| Restructuring charge | One-time cost of reorganization | Has some version appeared in each of the last five years? |
| Stock-based compensation | Non-cash expense | Is it a real cost to shareholders through dilution? |
| Litigation settlement | Not part of operations | Is litigation itself a recurring feature of this industry? |
| Amortization of acquired intangibles | Accounting artifact of M&A | Does the company acquire companies every year? |
| "Transformation" costs | Investment in change | Would the business function without this spending? |
The pattern to watch is asymmetry. When gains are kept in the adjusted figure and losses are adjusted out, the metric stops being a measure and becomes a marketing instrument. The SEC's 2019 C&DI updates addressed this directly, cautioning against adjustments that present a misleadingly rosy picture of what the SEC calls normalized results.
How much can the two numbers diverge?
By wide margins, and more in some sectors than others. Technology and biopharma companies exclude the most, frequently stock-based compensation that can run to double-digit percentages of revenue at large software firms, per figures companies themselves report in their 10-K filings. A company can show solid adjusted earnings growth while GAAP profit is flat or falling, and both statements can be factually true at once.
The divergence is not concealment; it is fully disclosed arithmetic. But attention is a finite resource, and the adjusted number is engineered for attention. In some quarters, gap between GAAP and non-GAAP earnings per share across the S&P 500 has run to double-digit percentages on an aggregate basis, as tabulated in company filings. The number that gets compared with consensus, that moves the stock after the release, is the flattering one. The audited one arrives later, in a different document, to a smaller audience.
What does a careful reader actually do with an earnings release?
Work the reconciliation, in a fixed order:
- Find the GAAP figure first, before the adjusted framing sets the anchor.
- Read the reconciliation table line by line, noting each excluded item's size.
- Compare this quarter's exclusions against the last eight quarters of releases.
- Ask which excluded costs will recur, and which genuinely will not.
- Check the 10-Q or 10-K when it files, because that is where the audited version lives.
None of this tells anyone whether to own the shares. It tells them what the company actually earned under rules it does not control, which is a different and more durable fact than the number on the first page.
Is the gap between the two numbers itself a signal?
Sometimes. A widening gap between adjusted and GAAP earnings usually means one of a few things: heavy acquisition accounting, rising stock-based pay, recurring restructuring, or a bad quarter being sanded down. Each has its own implications, and none is automatically disqualifying. What the gap reliably measures is distance between the business as run and the business as presented. That distance is factual, disclosed, and free to anyone who reads past page one. The verdict on any single company belongs to its own filings, read closely, one reconciliation at a time.
