How Merck Stock Reacted to Its Q2 2026 Earnings, Measured Minute by Minute

When Merck's numbers crossed at 10:30 UTC, the tape agreed with them: $128.39 to $131.00 in fifteen minutes, +2.03% measured from the print.

This page is the measured anatomy of that print on 4 August 2026: every earnings-related headline that crossed for Merck, in order, each with the price reaction measured from its own instant.

The print, row by row

The shape matters as much as the size. One minute in, the stock had moved -2.09%; by minute fifteen the sign had flipped to +2.03%. The first algorithmic read and the considered read disagreed, and the considered read won — a reversal inside the first quarter-hour, which is the single strongest argument for measuring at more than one horizon.

Which line actually moved it

Each row above is measured from its own instant — the price immediately before that specific headline crossed — so the rows can be compared directly. The largest single reaction, +2.03%, belongs to the 10:30 UTC line. By the time the 10:36 UTC line arrived, the measured response was +0% — the marginal information in each successive headline decays fast, and the decay is measurable.

Did the first read hold?

It did. By the close of that session, Merck stood at +0.18% against the prior close — the same direction the first fifteen minutes priced. The instant read and the considered read agreed.

The cleanest case: better numbers, higher price, and a measurable window in which that repricing happened. The volume column shows how much participation confirmed it.

How these numbers were measured

We record the price of the instrument immediately before each headline crosses our tape, then again one minute and fifteen minutes later, together with traded volume against that instrument's own normal. Every figure on this page comes from those recordings — the timestamps are the actual instants the lines crossed. Nothing here is an estimate, a close-to-close change, or a model's guess. The method, the gates every page must pass, and how we correct errors are documented in our editorial standards.