Apple (AAPL) experienced its steepest single-day drop since April after investor concerns intensified following reports of delays affecting its anticipated artificial intelligence improvements for Siri.
The company’s shares fell 5% on Thursday, erasing earlier yearly gains and leaving the stock down nearly 4% overall in 2026 as market confidence weakened.
AAPL investors reacted negatively to uncertainty around product timelines, especially because AI development has become central to technology valuations across the broader sector.
Siri AI Update Pushed Back
The planned upgrade to Siri had been expected imminently, but internal scheduling changes reportedly moved the rollout to May or potentially later depending on readiness and testing phases.
Instead of a single launch, the company may now introduce features gradually over several months, a shift interpreted by analysts as a sign of ongoing development challenges.
Apple maintained publicly that the technology remains scheduled for release within 2026, attempting to reassure investors concerned about competitive positioning in artificial intelligence services.
Regulatory Pressure Adds To Concerns
At the same time, regulatory attention increased after Federal Trade Commission Chair Andrew Ferguson requested a review of Apple News policies and terms of service by Chief Executive Tim Cook.
The request followed allegations the platform favored certain political viewpoints, introducing reputational and compliance risks that could affect future platform oversight requirements.
Regulatory scrutiny added further uncertainty to investor sentiment already affected by delays to high-profile software developments and rising research expenditures.
Wider Tech Sector Worries
Despite recently exceeding quarterly earnings expectations, Apple’s share performance has been weighed down by broader concerns that major technology companies may be overspending on artificial intelligence infrastructure.
Market caution intensified after UBS downgraded the U.S. technology sector to neutral, citing “software uncertainty” and significant capital expenditure commitments across industry leaders.
A broader sell-off in software stocks earlier in the week reinforced investor hesitation, as analysts reassessed valuation assumptions tied to long-term AI revenue potential.
Together, the delayed product rollout and regulatory developments compounded fears about growth timing, prompting traders to reassess short-term expectations for the company’s performance trajectory.
