STX · MARKET MOVERS · October 22, 2026

Why Seagate Technology (STX) Stock Is Down After Hours

By Stocks To Buy Now AI Research · Published October 22, 2026 at 6:42 PM Eastern

STX -2.87% after hours

$623.72 · Snapshot as of Oct 22, 2026, 6:40 PM New York time

This is a dated snapshot, not a live quote. After-hours change versus the same-day regular close of $642.14.

Three older hard disk drives from Western Digital, Hitachi and Seagate — Archive illustration: Western Digital, Hitachi and Seagate hard drives photographed in October 2009. These older products do not depict current HAMR or data-center models. Photo: uıɐɾ ʞ ʇɐɯɐs / Wikimedia Commons · CC BY-SA 2.0 · Wikimedia-supplied thumbnail; displayed with a responsive crop.

What is behind the stock move?

Seagate fell in October 22 after-hours trading ahead of its fiscal first-quarter 2027 report scheduled for October 27 after the close. The earnings timing is verified; no same-evening issuer earnings release is being asserted.

Latest company research

Seagate fell in October 22 after-hours trading ahead of its fiscal first-quarter 2027 report scheduled for October 27 after the close.

The latest reported quarter delivered $3.629 billion in revenue, with $5.58 GAAP EPS and $5.71 adjusted EPS.
Fiscal 2026 revenue reached $12.195 billion, up 34%, with $13.90 GAAP EPS and $15.58 adjusted EPS.
Fiscal-year free cash flow reached $3.1 billion, while operating cash flow totaled $3.7 billion.
July guidance for the upcoming quarter called for $4.0–$4.2 billion in revenue and $7.10–$7.50 adjusted EPS.
Data-center customers represented 80% of fiscal 2026 revenue, making cloud storage demand central to the business.
Western Digital released results this evening, providing relevant storage-industry context before Seagate reports its own numbers.

Cloud capital spending, customer concentration, storage pricing and HAMR execution remain risks; tonight’s move is not a Seagate earnings release.

Financials and technicals

Technical charts use the October 22, 2026 completed close. The session move above may reflect news released after that close.

Seagate Technology (STX) financials research infographic — Financials · Open image to inspect the full-size report.

Seagate Technology (STX) technicals research infographic — Technicals · Open image to inspect the full-size report.

Seagate Technology (STX) stock information

Sells hard drives and storage systems to cloud, enterprise and edge customers.

MASS-CAPACITY DATA STORAGE. Financial and valuation snapshot at the October 22, 2026 completed close; estimates and reporting dates are shown in the financial infographic.

Completed close · October 22, 2026: $642.14
Indicative market capitalization: $145.54 billion
FY2026 revenue: $12.20 billion
P/E · TTM GAAP: 46.20×
RSI (14) · October 22, 2026: 32.8

Explore Seagate Technology stock financials, earnings and research →

Technical setup and risks

The regular close tests the $629–642 floor after a sharp October reversal. Observed zones · support $629–642 · resistance $675–692. A closing reclaim of resistance would strengthen the setup; a close below support would weaken it. Confirm using regular-session volume and retests. These are observed zones, not guaranteed turning points. After-hours trades are excluded from the technical chart.

After-hours move is measured versus the same-day regular close across the saved largest-100 S&P 500 universe. AI-assisted research with source and calculation checks. Price snapshots may be delayed. Technical charts use the stated completed session, which can precede the quoted intraday move. Educational information; investing involves risk.