Automatic Data Processing Inc. (NASDAQ:ADP) did that thing companies love to do: beat expectations and raise guidance. And yet, the stock still slipped in premarket trading Wednesday. Go figure.

The payroll and HR software giant reported fiscal first-quarter 2027 revenue of $5.491 billion, edging past the analyst consensus of $5.475 billion. That's a 6% jump from a year earlier. Adjusted earnings came in at $2.82 per share, beating the $2.77 analysts were looking for.

So why the 2.08% premarket drop to $287.01? Sometimes markets are just moody. Or maybe investors were hoping for an even bigger raise. Either way, the fundamentals look solid.

Where the Money Comes From

ADP makes most of its money from service fees in two main segments: Employer Services and Professional Employer Organization (PEO) Services. Pricing depends on what clients actually use, which keeps things flexible.

Employer Services revenue rose 6% to $3.69 billion, while PEO Services grew 7% to $1.81 billion. Not bad for a company that's been around since the days of paper timecards.

Then there's the interest income on funds held for clients. That climbed 15% to $329 million. Average client funds balances rose 6% to $36.9 billion, and the average interest yield ticked up 30 basis points to 3.6%. Higher rates have been a nice tailwind here.

Margins and Profit

Adjusted EBIT rose 12% to $1.5 billion, and the adjusted operating margin expanded 130 basis points to 26.8%. Net earnings increased 11% to $1.1 billion.

ADP ended Sept. 30 with $3.28 billion in cash and equivalents and generated $651 million in operating cash flow during the quarter. That's a lot of dry powder.

Management's Take

CEO Maria Black said ADP started fiscal 2027 with strong results, crediting the company's resilient business model and continued client trust. She noted that increasing workplace complexity is pushing employers to lean more on ADP's expertise and solutions to transform workforce management. Black said the company enters the rest of fiscal 2027 with strong momentum.

CFO Peter Hadley said ADP exceeded its own expectations for revenue growth, adjusted operating margin expansion, and adjusted EPS growth. He also emphasized that disciplined investments are supporting the company's artificial intelligence transformation while maintaining strong financial performance. In other words, they're spending on AI but not lighting money on fire.

Looking Ahead

For fiscal 2027, ADP now expects revenue growth of nearly 6%, up from its previous forecast of 5% to 6%. That implies revenue of approximately $23.264 billion, above the $23.228 billion consensus.

The company also raised its adjusted diluted EPS growth forecast to 10% to 12%, from 9% to 11%. The revised outlook implies adjusted earnings of $12.23 to $12.45 per share, compared with the $12.26 consensus.

So the beat-and-raise was real. The market's shrug might just be a case of high expectations already baked in. Or maybe investors are waiting to see how the AI strategy plays out. Either way, ADP's business looks as steady as ever.