Why Is Teradata Stock Down Today?

Teradata beat Q2 2026 estimates on both lines — non-GAAP EPS of $0.69 against $0.55 expected, revenue of $410 million against $396 million expected. During the regular session, shares rose 7.21% to $34.41 on that beat. Then, after the close, the stock reversed and fell 18.26% to $28.11 — erasing the day's gain and then some, inside a matter of hours.

Two opposite reactions to the same release, hours apart

This is a cleaner version of "sell the news" than most: the market's FIRST read, during market hours, was genuinely positive — a 7.21% rally on the beat. The SECOND read, once the earnings call and Q3 guidance were digested, was sharply negative. Teradata guided Q3 2026 adjusted EPS to $0.55-$0.59, a $0.57 midpoint that sits below the $0.62 analysts had modeled, alongside commentary flagging a sequential revenue decline expected in the current quarter.

Why the guidance number outweighed the beat

A beat-and-raise gets a durable rally; a beat-and-guide-down gets exactly this pattern -- an initial pop on the trailing number, reversed once the market does the math on what the COMPANY itself is now saying about the NEXT quarter. Teradata's own Q3 guidance implies growth is decelerating sequentially, which matters more to a stock trading on "when does the AI-platform transition show up in the numbers" than a beat on a quarter that's already in the past.

What to watch

Whether Q3 2026 actual results land at or above the $0.57 midpoint the company itself set is the cleanest test: a beat against Teradata's OWN lowered bar would suggest this was conservative guidance rather than a real deceleration; a miss against it would confirm the afterhours reaction read the situation correctly.