3M slides as GAAP EPS drops sharply despite Q1 beat on adjusted profit
3M shares are sliding after first-quarter 2026 results showed GAAP EPS fell 40% to $1.23 even as adjusted EPS rose 14% to $2.14 on $6.03 billion of revenue. The company reiterated full-year 2026 guidance, leaving investors focused on weaker GAAP profitability and items below the line rather than an upside outlook.
1. What’s moving the stock
3M (MMM) is down about 3% after reporting first-quarter 2026 results that look stronger on an adjusted basis but weaker on GAAP earnings power. The headline miss for many investors is GAAP diluted EPS of $1.23, down 40% year over year, which is overshadowing an adjusted EPS increase to $2.14 and a sizable margin improvement.
2. The key numbers investors are reacting to
For Q1 2026, 3M reported GAAP revenue of $6.03 billion (+1.3% YoY) and GAAP operating margin of 23.2% (+230 bps YoY). On an adjusted basis, operating margin was 23.8% (+30 bps YoY) and adjusted EPS was $2.14 (+14% YoY), while operating cash flow was $574 million and adjusted free cash flow was $541 million.
3. Guidance and why the market still sold
3M reiterated its full-year 2026 guidance rather than raising it, keeping expectations centered on adjusted EPS of $8.50–$8.70, roughly ~4% adjusted sales growth, and 70–80 bps of adjusted margin expansion. With guidance unchanged, the stock’s move suggests investors were looking for a higher bar (a raise, stronger organic growth, or cleaner GAAP earnings) and instead got a quarter where below-the-line expenses and special items drove a sharp GAAP EPS decline.
4. What to watch next
The next driver is whether 3M can convert margin gains into consistently stronger GAAP earnings and cash generation, not just adjusted results. Investors will be watching management commentary for the size and trajectory of non-operating expenses and any updates tied to litigation-related and PFAS-related costs, plus whether organic growth broadens beyond pockets of strength.