Cybersecurity and optical networking stocks crushed it at Tuesday's close, with Applied Optoelectronics…

As seen on the 24/7 Wall St. homepage on July 14, 2026.

Biggest movers · At the close
Gainers
  • AAOIApplied Optoelectronics$124.72+11.5%
  • ZSZscaler$152.31+7.4%
  • PANWPalo Alto Networks$352.07+6.6%
  • SSentinelOne$19.75+6.4%
  • DELLDell Technologies$450.5+5.5%
Losers
  • LCIDLucid$4.8-13.0%
  • ARMArm$282.19-5.6%
  • IDXXIDEXX Laboratories$539.98-4.3%

Cybersecurity and optical networking stocks crushed it at Tuesday's close, with Applied Optoelectronics surging 11% while Lucid cratered 13% on EV concerns.

Mentioned: AAOI, ZS, PANW, S, DELL, LCID, ARM, IDXX

More market updates