Tesla shares plunged 15 percent to $319 and Alphabet dropped 8 percent on Thursday, dragging the S&P 500 down 1.55 percent, as investors decided that the more than $230 billion the two companies plan to spend this year looks more like a liability than an asset. The electric vehicle maker reported revenue of $28.2 billion, beating estimates, and delivered more than 480,000 vehicles, also above expectations. But adjusted earnings of 33 cents a share missed the 51-cent consensus by a wide margin, and capital expenditure surged 142 percent year over year to $5.8 billion, producing the first quarterly cash burn since 2022. The stock hit its lowest level since August 2025 and is down 24 percent this month, on track for its worst monthly performance since February's 28 percent decline.

Google's parent reported second-quarter revenue of $119 billion, up 24 percent, and net profit that tripled to more than $112 billion. Cloud revenue jumped 82 percent to $24.77 billion, comfortably ahead of the $22.46 billion estimate. Yet the market focused on the 2026 capital expenditure guidance, raised to $205 billion from a previous range of $180 billion to $190 billion, with management warning that spending will climb further in 2027.

Alphabet is the first of the Magnificent Seven to report this season. Meta, Microsoft and Amazon follow next week, and the four have signaled combined AI infrastructure spending of as much as $725 billion for the year. Sundar Pichai argued that AI investment accelerated Cloud growth to 82 percent. Investors, however, are asking when the productivity and cash-flow returns arrive.

The selloff suggests a simple but uncomfortable reality: the market is no longer rewarding the promise of future dominance funded by present-day incineration of cash. Tesla's robotaxi and AI initiatives have yet to contribute meaningfully to the financials. Alphabet's cloud business is growing fast, but a $205 billion capex plan for 2026, raised from a previous $180 billion to $190 billion range, tests the patience of even the most faithful compounders.

Next week's reports from Meta, Microsoft and Amazon will show whether the $725 billion figure holds or expands. Until then, the Magnificent Seven trade has been reduced to a single question: how much cash burn is too much?