Fortinet Drops 6% After Hours, Shedding About $8 Billion
As seen on the 24/7 Wall St. homepage on October 28, 2026.
A 6.05% drop to $173.33 is roughly $8 billion of market value off a $127 billion cybersecurity name in a single session. Moves this size are rare here, so the after-hours level is the one to watch into tomorrow's open.
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Fortinet fell just over 6% in after-hours trading, erasing roughly $8 billion in market value.
The stock held near the $178 range for much of the after-hours window before accelerating lower, and the recovery attempt stalled without reclaiming the ground lost in the sharpest part of the selloff.
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Moves of this magnitude are uncommon for a cybersecurity name of Fortinet's size, and a swing like this typically signals that something material has landed. The next regular open is the first real test of how buyers read the lower price.
The after-hours price of $173.33 is the number to focus on heading into the next open. The speed and depth of any recovery will indicate how the broader market is reading whatever drove the move.
Sources
Mentioned: FTNT