Alphabet Stock Price Forecast: Disappointing Earnings Trigger 10% Plunge, Next Line of Defense Eyes Year Low of $270

TradingKey - Alphabet Results Miss Expectations, Stock Plunges 10%, Facing a Life-or-Death Battle at $270 Technical Support

On October 28 ET, Alphabet (GOOG) reported third-quarter (Q3) FY2026 financial results with both revenue and profit missing expectations by a wide margin, triggering a sharp plunge of over 10% in overnight trading, breaching the $300 mark and falling to a low around $288.

The core reason behind the plunge in Alphabet's stock price lies not in a slowdown in business growth, but in high AI capital expenditures (CapEx) eroding free cash flow, coupled with non-operating investment losses dragging earnings per share (EPS) significantly below Wall Street expectations. Among these, an unrealized loss of $8.2 billion on its SpaceX investment directly reduced EPS for the quarter. The core figures are as follows:

Management acknowledged on the earnings call that while AI search features drove query volume to a 5-year high, current ad monetization rates remain temporarily lower than those of traditional search pages. This implies that Alphabet's exceptionally high AI capital expenditures have not yielded proportional returns, deepening collective investor anxiety over a prolonged AI return on investment (ROI) cycle.

Currently, after Alphabet's stock broke below its recent dense trading base of $300, the technical pattern shows a classic breakdown. The next line of defense sits at $270, the year-to-date low set in March this year. This level represents a cost-basis accumulation zone for Wall Street active funds that executed large-scale asset allocations at the start of 2026, and is expected to receive strong support from value-oriented buying.

Alphabet stock chart, Source: TradingView

From a valuation perspective, if Alphabet's stock price falls to $270, its forward P/E ratio will drop to around 17.5x–18.0x, presenting an extremely attractive discount compared with big tech peers, which makes a breakdown below this level unlikely. For context, Microsoft (MSFT)'s forward P/E ratio is around 28x, while Apple's (AAPL) is around 30x.