The earnings result
IBM reported earnings on 2021-10-20 for the fiscal quarter ending Sep/2021. Reported EPS of $2.52 compared with a consensus estimate of $2.49, a beat on the source's earnings measure.
An EPS comparison describes one part of the release. Revenue, segment performance, cash conversion, guidance and the conference-call discussion require the original company disclosures; the result alone does not establish why the stock moved.
The market response
Price baseline: report-date close; announcement time unavailable. The source does not identify whether this report was before or after trading. These are subsequent daily returns, not a verified immediate earnings reaction.
The first measured session returned -9.56% from the stated baseline. The five-session return was -11.79%, and the 20-session return was -12.97%. SPY returned +3.48% across the corresponding window. Relative volume was 7 times the preceding 20-session average.
This edition is a source-based earnings-result and market-response analysis. A full financial-statement and conference-call dossier is not yet attached.