Alphabet Looks Cheap at 15x Earnings. Its Cash Flow Tells a Different Story

Alphabet trades at 14.9x trailing earnings, the lowest multiple among the big three hyperscalers, yet it has now posted two consecutive quarters of negative free cash flow. Most of the gap comes from two places: capex that more than doubled in a year, and trailing earnings inflated by roughly $79 billion of income that did not come from operations. On forward earnings and on cash, Alphabet is a more expensive and more capital-hungry company than its headline P/E suggests.

In our last note we flagged that Alphabet's forward P/E (18.5x) sits above its trailing P/E, which implies falling earnings. The quarterly data explain why.

Five quarters, one direction

The operating business is healthy. Revenue grew 25% year over year in Q3 2026 and operating income grew 30%. The problem is that spending is outrunning it.

Quarterly capex rose from $24.0B to $51.4B in twelve months, an increase of 114%. Capex now absorbs 40% of revenue, up from 23.5% a year earlier, and 122% of operating cash flow. For the trailing twelve months Alphabet spent $159.8B on capex, five times its 2022 level of $31.5B.

Cash conversion has weakened too

Higher capex is only half of the free cash flow story. Operating cash flow has also fallen, from a peak of $52.4B in Q4 2025 to $42.3B in Q3 2026, even as operating income rose.

A year ago Alphabet converted $1.55 of operating cash flow for every dollar of operating income. In the last two quarters that ratio has been close to one-for-one (0.96 in Q2 and 1.04 in Q3). The data do not show the cause. Taxes, working capital and the timing of payments are all possible. But the drop matters: if cash conversion stays near current levels, revenue growth alone will not bring free cash flow back.

Why the 14.9x P/E flatters Alphabet

Trailing-twelve-month diluted EPS is $19.16. Almost three quarters of that, $14.22, was earned in just two quarters: $5.11 in Q1 2026 and $9.11 in Q2 2026.

Those quarters were unusual. Net income in Q2 2026 was $112.2B against operating income of $40.8B. Normally net income sits below operating income, because it is reported after tax. Over the trailing twelve months, net income of $235.8B exceeds operating income of $157.0B by $78.8B. That gap has to come from non-operating items. The data here do not identify them, but gains of this size typically come from revaluing investments rather than from selling products. They are unlikely to repeat on a schedule.

The normal pattern has already returned. In Q3 2026, net income ($26.5B) was back below operating income ($40.6B), and diluted EPS of $2.12 was 26% lower than a year earlier, even though operating income rose 30%.

That is why the forward multiple is higher. The analyst forward EPS estimate of $15.44 is 19% below trailing EPS. At $284.78 a share:

A 0.6% free cash flow yield compares with 1.5% for Microsoft. Only Amazon, whose yield is negative, is lower. Investors buying Alphabet at "15x earnings" are paying closer to 18.5x for the earnings that will recur, and getting very little cash today.

How the buildout is being funded

Alphabet is not short of money. Cash and short-term investments stood at $265.1B at the end of Q3 2026, up $166.6B in a year. Total debt was $141.9B, leaving about $123B of net cash. But the way the company funds itself has changed:

• Buybacks have stopped. Alphabet repurchased $62.2B of stock in 2024 and $45.7B in 2025. The data show no repurchases in Q1, Q2 or Q3 2026.
• Debt is rising. Total debt grew $29.1B in Q3 2026 alone, from $112.8B to $141.9B. The data do not report debt before Q2 2026, so we cannot show the longer trend.
• The dividend continues. Dividends paid rose from $2.5B to $2.9B per quarter.

From 2022 to 2024, buybacks absorbed 85% or more of Alphabet's free cash flow every year. Now the company is keeping that cash, and borrowing more on top, to fund data centers.

Cash rose by $166.6B over a year in which free cash flow was only $19.7B. The gap was closed by outside financing. Long-term debt rose from $46.5B at the end of 2025 to $125.1B, and in the first nine months of 2026 Alphabet raised about $42.9B by issuing common stock (including a $20.5B offering in June) plus about $19.1B of mandatory convertible preferred stock (Q3 2026 results). Alphabet is not only borrowing to fund the buildout. It is selling new shares too, which dilutes existing shareholders.

Updated November 8, 2026: an earlier version said the source of the cash increase was unclear; Alphabet's Q3 filing shows it.

The depreciation bill is still to come

Today's capex becomes tomorrow's expense. Depreciation and amortization reached $8.4B in Q3 2026, up 50% in a year, but that is still only one-sixth of the quarter's $51.4B capex. As the servers and buildings bought in 2025 and 2026 come into service, depreciation will rise, and it will reduce operating margins unless revenue keeps pace. Operating margin has already slipped from 36.1% in Q1 2026 to 31.8% in Q3.

What to watch

1. Free cash flow returning to positive. Two negative quarters could reflect a burst of spending. A third would suggest the new normal.
2. Capex as a share of revenue. At 40%, Alphabet is spending like a utility. Any sign that this ratio is levelling off matters more than the dollar total.
3. Cash conversion. If operating cash flow does not recover to well above operating income, free cash flow stays tight even if capex slows.
4. Operating margin under rising depreciation. It has fallen four percentage points in two quarters, from 36.1% to 31.8%.
5. Whether buybacks resume. Their return would be the clearest signal that management thinks the heaviest spending is over.

Alphabet's business is growing and its balance sheet is strong. But the cheap headline multiple rests on income that will not recur, and free cash flow, the measure that pays shareholders, has fallen from $73.3B in 2025 to $19.7B over the last twelve months, and was negative in each of the last two quarters. The market is pricing Alphabet on earnings. The cash flow makes it a different investment.

Data: Yahoo Finance via yfinance, retrieved November 8, 2026; quarterly figures as reported in that dataset and may differ slightly from company filings. This note is for informational purposes only and does not constitute investment advice.