Apple's stock reached a new all-time high of $345 on Tuesday, marking a 25% year-to-date gain under new CEO John Ternus. The shares have rallied following the company's recent product unveiling earlier this month. Apple introduced the iPhone Duo, a foldable device with a 5.4-inch front display that expands to 7.6 inches when opened. The device will launch in late October, starting at $1,999. The upgraded iPhone 18 suite also went on sale worldwide last Friday, with analysts noting strong demand despite a $100 price increase. Evercore ISI analyst Amit Daryanani suggested demand is holding up well through the first week of sales. The company has risen 118,900% from its dot-com crash lows.

Southern California Edison customers can now access electricity usage data through Apple's Home app, with GridX serving as the technology integration partner. The feature, available to users with iPhone, iPad, Mac or Apple Watch running software version 27, allows customers to view hourly and daily electricity consumption, track usage patterns, and identify peak versus off-peak periods. GridX, an Enterprise Rate and Data Platform provider, handled data transformation and standardisation to enable the integration. The Home app also includes a Grid Forecast feature that identifies times when the electric grid uses cleaner energy sources like solar or wind power. The tool aims to help residential customers better understand their energy usage and align consumption with their rate plans. GridX serves nearly 40 utility and energy provider customers globally.

Apple shares hit an all-time high on 21 September 2026, touching nearly $345 intraday before settling near $339. The stock has climbed more than 36% over the trailing 12 months, pushing its market cap above $5 trillion. The rally reflects renewed confidence in Apple's hardware and services ecosystem. Strong demand for the latest iPhone models, particularly the iPhone 18 Pro and upcoming foldable iPhone Duo, has extended delivery times and lifted upgrade-cycle expectations. Meanwhile, NVIDIA's forward price-to-earnings ratio has fallen sharply from levels above 25x earlier this year, despite recent quarterly revenue exceeding $96 billion, up more than 100% year over year. Investors appear to be pricing in risks around potential slowdowns in AI capital expenditure and competition from custom chips.