When AMD reported its Q1 2026 earnings on May 5, 2026, it disclosed two different earnings-per-share figures: $0.84 under GAAP, and $1.37 on an adjusted non-GAAP basis. Neither number is wrong—but they measure entirely different things. Understanding the gap between them is one of the most practical skills any market-watcher can develop, especially during earnings season when headlines trumpet “beats” that may be based on one number while burying the other.
This guide explains what EPS is, how GAAP and non-GAAP versions differ, what adjustments create the gap, and how to read both numbers without getting misled.
What Is EPS?
Earnings per share (EPS) measures how much net income a company generated for each share of common stock outstanding. The basic formula is:
Basic EPS = Net Income ÷ Weighted Average Basic Shares Outstanding
The “weighted average” accounts for shares issued or repurchased during the quarter. If a company starts with 100 million shares and buys back 10 million halfway through, it counts 95 million—not 90 million—for the period.
Diluted EPS: The More Conservative Number
Most financial reporting focuses on diluted EPS, which expands the denominator to include securities that could convert into shares in the future: employee stock options, restricted stock units (RSUs), convertible bonds, and warrants. Adding these “potential shares” makes EPS smaller—and more conservative.
Diluted EPS = Net Income ÷ (Weighted Average Basic Shares + Dilutive Securities)
This calculation follows FASB Accounting Standards Codification (ASC) 260, the authoritative U.S. standard for earnings-per-share reporting. Diluted EPS is always equal to or lower than basic EPS; when you see a single EPS figure quoted in the press, it is almost always the diluted version.
For AMD in Q1 2026: approximately 1.65 billion diluted shares outstanding, divided into $1.38 billion in GAAP net income, produces $0.84 diluted GAAP EPS.
What Is GAAP EPS?
GAAP stands for Generally Accepted Accounting Principles—the standardized rules set by the Financial Accounting Standards Board (FASB), which has governed U.S. corporate accounting since its founding in 1973. Under GAAP, every expense must appear on the income statement: salaries, stock-based compensation, depreciation, amortization of acquired intangibles, restructuring charges, and one-time legal settlements. Nothing is left out.
U.S. public companies are legally required to file GAAP financial statements with the SEC each quarter (10-Q) and each year (10-K). AMD’s $0.84 GAAP EPS for Q1 2026 is audited and standardized—the number that carries legal weight under SEC disclosure rules.
The value of GAAP: it is comparable across companies because everyone follows the same rulebook.
What Is Non-GAAP EPS?
Non-GAAP EPS—also called “adjusted EPS,” “core EPS,” or “operating EPS”—starts with GAAP net income and adds back (or removes) certain items that management argues do not reflect the company’s ongoing business performance. The result is divided by the share count to produce a per-share figure that most sell-side analysts track for consensus estimates.
The most common adjustments in technology companies are:
- Stock-based compensation (SBC): Options and RSUs granted to employees are a real expense under GAAP but do not consume cash. Companies argue the economic cost shows up through share dilution rather than the income statement. Critics counter that ignoring SBC overstates profitability.
- Amortization of acquired intangibles: When AMD acquired Xilinx in 2022, it paid for intellectual property, customer relationships, and trade names that GAAP requires to be amortized over their useful lives—a large, recurring non-cash charge that will eventually disappear once the assets are fully written off.
- Restructuring charges: Costs from layoffs or facility closures, excluded as “one-time” items even when they recur.
- Acquisition costs: Legal, advisory, and due-diligence fees from M&A transactions.
- Tax adjustments: The non-GAAP tax provision is recalculated to be consistent with the adjusted income, so the effective tax rate is apples-to-apples across periods.
The Reconciliation Requirement
The SEC adopted Regulation G in January 2003 under the Sarbanes-Oxley Act. It requires any public company that discloses a non-GAAP financial measure to present the most directly comparable GAAP measure alongside it and provide a full reconciliation table. You will find this table in AMD’s earnings press release—it lists every item added back, with a dollar amount. Reading it takes about 90 seconds and is the single most valuable step when evaluating an earnings report.
| Common Non-GAAP Adjustment | What It Removes from GAAP | Management Rationale | Investor Caution |
|---|---|---|---|
| Stock-based compensation | SBC expense (cash-free but real) | Non-cash; cost reflected in dilution | Dilutes shareholders; not free |
| Amortization of intangibles | Post-acquisition IP & brand write-downs | Non-cash; disappears over time | New deals reset the clock |
| Restructuring charges | Layoff and facility-closure costs | “One-time” and non-recurring | May recur quarter after quarter |
| Acquisition costs | M&A advisory and legal fees | Transaction-specific, non-recurring | Serial acquirers pay this every year |
| Tax adjustments | Tax effect of above items | Keeps effective tax rate consistent | Check the actual cash tax rate too |
Worked Example: AMD Q1 2026
AMD’s Q1 2026 results (quarter ended March 29, 2026) illustrate how wide the GAAP-to-non-GAAP gap can grow in a semiconductor company with a large acquired-intangibles load:
| Quarter | Revenue | GAAP Net Income | GAAP Dil. EPS | Non-GAAP Dil. EPS |
|---|---|---|---|---|
| Q4 2024 | $7.66B | $482M | $0.30 | — |
| Q1 2025 | $7.44B | $709M | $0.44 | — |
| Q2 2025 | $7.69B | $872M | $0.54 | — |
| Q3 2025 | $9.25B | $1,243M | $0.77 | — |
| Q4 2025 | $10.27B | $1,511M | $0.92 | — |
| Q1 2026 | $10.25B | $1,383M | $0.84 | $1.37 |
The Q1 2026 GAAP-to-non-GAAP gap is $0.53 per share, or 63% above GAAP. In aggregate dollar terms, AMD’s non-GAAP adjustments added roughly $870 million back to GAAP net income before tax effects. The two dominant items in AMD’s reconciliation are typically stock-based compensation (substantial for a company recruiting thousands of chip engineers competing against Nvidia and Intel) and amortization of intangibles from the 2022 Xilinx acquisition. The full line-by-line reconciliation is published in AMD’s press release on file with the SEC.
When Non-GAAP Numbers Mislead
Non-GAAP is management-defined. There are no GAAP rules limiting what a company can label “adjusted,” which creates four recurring red flags investors should watch for:
- Recurring “one-time” charges. If restructuring costs or executive-separation payments appear every single quarter, they are no longer one-time. A company that excludes them every quarter is presenting an artificial earnings floor. Look at three to four years of press releases and check whether the “one-time” items keep recurring.
- Stock-based compensation treated as free. SBC dilutes existing shareholders by increasing the share count over time. Excluding it from earnings while not adjusting for dilution in the denominator overstates returns on capital and masks the true cost of retaining talent.
- Definition changes. Companies can—and do—quietly change which items they exclude between quarters, making period-over-period non-GAAP comparisons unreliable. Always verify in the press release that the definition hasn’t shifted.
- Beating non-GAAP while missing on GAAP. Most “earnings beat” headlines in financial media use the non-GAAP estimate, which is the number analysts agree to track. A company can report a GAAP loss and still generate a headline that says it “beat expectations.” The P/E ratio in stock screeners is often the GAAP P/E—make sure you know which one the valuation tool is using.
The SEC has issued investor bulletins specifically warning about these risks. The underlying message: always anchor your analysis in the GAAP figures, and use non-GAAP as a supplemental lens—not a replacement.
How to Use Both Numbers
The goal is not to ignore one and trust the other. Each answers a different question:
- GAAP EPS is the legal anchor. It tells you whether the company is actually profitable under a standardized, audited rulebook. A business posting perpetual GAAP losses—regardless of its adjusted profitability—is consuming capital faster than it generates it.
- Non-GAAP EPS helps compare operational performance across companies and quarters, especially when businesses carry heavy M&A amortization or equity-compensation programs that vary by age and deal history. Comparing GAAP EPS between a company fresh off a $20B acquisition and one that hasn’t acquired anything in a decade is an apples-to-oranges exercise.
- The GAAP-to-non-GAAP gap itself is a signal. A widening spread often means rising SBC (watch for dilution) or growing amortization from new acquisitions. A narrowing spread can mean acquired intangibles are aging off—a potential tailwind for future earnings convergence. Track the gap over time, not just the absolute levels.
- Always read the reconciliation table. It’s published in every earnings press release and takes under two minutes to scan. The table tells you exactly what management is classifying as “non-recurring” and in what amounts—the two most important inputs for judging whether the adjustments are reasonable.
Think of GAAP EPS as the tax return and non-GAAP EPS as the management presentation. Both are real. Both are useful. Neither tells the full story alone.
Related Concepts to Explore Next
- Free Cash Flow vs. Net Income — another “alternative to GAAP” debate, and often more informative for capital-intensive businesses than EPS alone.
- The P/E Ratio — price divided by EPS; the GAAP P/E and forward non-GAAP P/E for the same stock can differ by 20–40% in tech. Know which one a screener is showing you.
- Dilution and share count — how SBC, secondary offerings, and buybacks shift the denominator of EPS over time, and why diluted share count matters more than headline net income alone.
- How to read a full earnings press release — locating the income statement, the guidance section, and the non-GAAP reconciliation table in under 10 minutes.
Sources
- AMD Quarterly Financials — Stock Analysis (sourced from AMD SEC filings; GAAP data Q4 2024 – Q1 2026)
- AMD Q1 2026 Earnings Press Release — SEC EDGAR (8-K, accession 0000002488-26-000072, filed May 5, 2026)
- What Is GAAP? — Accounting.com (FASB history and GAAP principles)
- FASB Accounting Standards Codification (ASC 260 — Earnings Per Share)
- SEC Regulation G — Non-GAAP Financial Measures (Rule 33-8176, January 2003)
Disclosure: This article was produced with AI assistance and reviewed before publication. It is for informational purposes only and is not investment advice.