Alphabet at 17.5x Earnings: Why the Gap to Microsoft Persists

Alphabet’s market value passed Microsoft’s this summer, and not many people seem to have clocked it. Alphabet sits around $349.54 a share, good for a market cap near $4,274.9 billion, against Microsoft’s $3,666.6 billion at $493.78. Yet Alphabet trades at 17.5 times trailing earnings and Microsoft at 27.5. A bigger company selling at the lower multiple is not a stable arrangement. Something is being priced in, and the July quarter is the clearest look yet at what.

My view: a ten-point gap in earnings multiple is too wide for a business still growing revenue near a quarter each year, and the two reasons the market gives for that gap, a chat-answer threat to Search and a legal overhang, are both weaker right now than the discount implies.

The quarter that raised capex, not confidence

Revenue was $119.8 billion in the second quarter, up 24% from a year earlier, Alphabet’s twelfth straight quarter of double-digit growth. Operating income rose 30% to $40.8 billion. None of that is why the stock fell the next day. What moved it was the capital budget: Alphabet raised its 2026 capex forecast to a $195 billion-$205 billion range, up from the $180 billion-$190 billion it had guided to in April, citing accelerating demand for AI infrastructure capacity.

That reaction was not irrational. Free cash flow gets squeezed when spending on servers and data centers outruns the cash a company is bringing in, and Alphabet is now guiding to a wider gap between the two than at any point in its recent history.

Cloud is the part of the capex story that argues the spending is earning its keep. Revenue there grew 82% to $24.8 billion, and operating income rose to $8.8 billion from $2.8 billion a year earlier, a margin near 35%, up from single digits two years back. The backlog of signed cloud commitments reached $514 billion, more than $50 billion higher than the prior quarter, and Alphabet says just over half of it should convert to revenue within 24 months. That backlog is one more data point in the AI-infrastructure buildout reshaping capital spending across the sector. Alphabet is now a seller of compute capacity as much as a buyer of it, which is a different business than the one its multiple was built around a few years ago.

Search growth undercuts the replacement fear

The bear case on Alphabet fits in one sentence: chat interfaces answer the question directly, so fewer people click through to a page stacked with ads. It is a reasonable worry. It has not shown up in the numbers.

Search and other revenue grew 17% in the quarter to $63.3 billion. That is not the growth profile of a franchise losing its core function. Google has not published a query-volume figure this year. The revenue math is still suggestive: getting to 17% growth in a mature ad market with roughly stable pricing is difficult to pull off if usage is actually falling. I read that as evidence the replacement thesis is running ahead of the data, rather than proof the thesis is wrong.

Google has spent two years folding AI Overviews and Gemini-based summaries directly into search results, a bet that owning the AI answer keeps both the click and the ad inside its own product rather than losing it to a separate chat app. Whether that holds as habits change is a genuine open question, and it is the one risk in this piece I would not wave away. If a rival assistant starts pulling meaningful share of everyday queries away from google.com, Search growth is where it will show up first, probably a couple of quarters before Wall Street admits it.

What the antitrust rulings actually settled

Two of Alphabet’s biggest legal fights reached decisions this year, and both narrowed rather than resolved the overhang. In the ad-tech case, a court ruled in September that Google had broken antitrust law but stopped short of ordering a breakup of the ad-tech business, a lighter outcome than the government had sought. In the search case, the remedies a federal judge imposed in 2025 left Chrome and Android intact inside Alphabet; the Justice Department and a group of state attorneys general are now appealing for tougher terms, so that dispute is still open.

What’s changed is the range of outcomes. A forced sale of Chrome or a structural breakup of the ad stack, the two scenarios that would actually reprice this stock, are off the table for now. What remains is fines and behavioral limits on default-search deals and ad auctions, a cost Alphabet can absorb inside net income of $132.2 billion over the past year without touching how the business runs day to day.

The legal risk is not gone. It is smaller than it was in March, and multiples should move when risk does.

The valuation gap versus Microsoft, in numbers

Read one way, Alphabet is cheaper than Microsoft on every trailing number in the table below and roughly in line with it on forward estimates. Consensus models Alphabet’s forward EPS at $13.65, well under this year’s trailing $19.93. That is a real step down, not a rounding issue, and the size of the drop makes me suspect trailing earnings are carrying a gain that will not repeat, though nothing in the numbers I have says exactly what it is. Until that clears up, I would lean on the trailing multiple more than the forward one, because at least I know what produced it.

Microsoft’s forward multiple sits close to its trailing one, 25.1 versus 27.5, which is a steadier picture even if it costs more to buy. That steadiness is part of what the price already asks of Microsoft: consistent Azure growth priced at a premium, versus Alphabet’s faster, lumpier growth priced at a discount for legal and disruption risk that just got measurably smaller.

There is also a history check worth running. Alphabet’s own five-year average trailing P/E is 24.4, so today’s 17.5 is a discount to its own past, not only to Microsoft’s current multiple. Microsoft, by contrast, trades at 27.5 against a five-year average of 32.5, already a discount to its own history despite costing more per dollar of earnings than Alphabet does. Both stocks are cheaper than their five-year selves right now, which says more about how expensive big tech got earlier in this cycle than it does about either company weakening today.

Metric	Alphabet (GOOGL)	Microsoft (MSFT)
Price	$349.54	$493.78
Market cap	$4,274.9 billion	$3,666.6 billion
P/E (trailing)	17.5	27.5
P/E (forward)	25.6	25.1
Revenue growth (latest FY)	15%	18%
Operating margin	32%	47%
Analyst average target	$428 (23% upside)	$573 (16% upside)

Growth alone does not close a ten-point gap. Confidence does, and confidence here is a function of two things holding steady at once: Cloud’s margin climb and Search’s growth rate. Palantir shows the opposite problem, a stock growing fast enough to matter but priced so far ahead of that growth that the multiple alone is the risk. Alphabet is closer to the reverse case, a stock where the growth already justifies a higher multiple than it is getting.

Where the shares sit against their own range

Alphabet is 14.4% below its 52-week high of $408 and 49% above its low of $235, which puts it in the middle third of its own range rather than at a distressed level. That matters because a stock priced for disaster usually trades near its low, and this one does not. The market has taken some risk off the table already; it just has not taken enough off to close the gap with Microsoft.

Coverage is broad and mostly bullish. 28 analysts cover the stock, 86% rate it a buy, and the average price target of $428 implies 23% of upside from here, with the high estimate at $485. Short interest is thin at 0.6% of the float, so this is not a name the market is betting against in size. What it looks like, instead, is a stock the sell side likes on paper but has not pushed hard enough to actually close the valuation gap, which is a common enough pattern when a name carries legal-headline risk that is hard to model into a spreadsheet.

Dividend income is not the reason to own this one. The yield is 0.24% on trailing payments of $0.85 a share, closer to a rounding error than an income strategy, and buybacks and reinvestment in Cloud capacity are doing the capital-allocation work instead. Anyone buying Alphabet for yield is in the wrong stock; anyone buying it for the growth-versus-multiple gap has a case, so long as they can stomach a capex number that keeps climbing before it levels off.

The number that would change my mind

I would treat Alphabet as a holding built on two things converging rather than one story: Cloud margin still rising toward the 40% area management has hinted at, and Search revenue growth holding in the mid-teens through the next two reports. If both hold, seventeen and a half times trailing earnings will look like a stock mispriced against its own market cap, not a fair discount for risk. If Search growth drops under 10% for two consecutive quarters, that is the specific number that would tell me the AI-replacement risk is real rather than theoretical, and I would rethink the position rather than average down into it.

Analysis and opinion only, not investment advice. Figures come from Alphabet’s second-quarter 2026 results, its filings on SEC EDGAR and its investor site, with earnings-call detail from CNBC’s coverage; valuation multiples are approximate and were checked on September 22, 2026.