Google Just Won the Right to Keep Its Ad Tech Tools. They Live in the One Business It Has That Is Shrinking.

Alphabet (GOOG +1.59%)(GOOGL +1.59%) dodged a breakup on Wednesday. U.S. District Judge Leonie Brinkema declined the government’s request to force a sale of the company’s ad exchange and its publisher ad server, instead accepting most of the parties’ proposed behavioral remedies, with modifications of her own. The decision lands about 16 months after the same judge found Google had illegally monopolized key advertising technology markets, and it closes off the most severe outcome the case could have produced.

But the ad tech Google just won the right to keep sits in the one piece of Alphabet that is already shrinking. Revenue in the company’s Google Network business, where the contested products live, has fallen for three straight years. And it slipped again in the second quarter while every other revenue line at the company grew.

In other words, Alphabet spent years of legal effort defending what is arguably its least important business. That context matters, I think, before assuming this week’s ruling changes much for shareholders.

New rules, same owner

The ruling, entered Wednesday in the Eastern District of Virginia, stops short of the structural remedy the Justice Department wanted. Google won’t have to sell AdX, its ad exchange, or DFP, its publisher ad server — the two products it bundles together as Google Ad Manager.

Instead, Brinkema accepted most of the behavioral remedies the two sides had proposed, reshaping them where she saw fit. The proposals on the table included requiring Google to make real-time AdX bid data available to rival ad servers and letting publishers set different price floors for individual bidders. They also included ending the first look and last look privileges that gave its exchange the first or final opportunity to win an ad sale.

Worth noting: the judge’s full written opinion is sealed for about two weeks while both sides review it for confidential material, so the finer details of the remedies aren’t public yet.

The business it kept is shrinking

Google Network includes the revenue Alphabet generates from AdSense, AdMob, and Google Ad Manager — the money it makes selling ads on other companies’ websites and apps instead of on its own properties.

And the decline there isn’t new. Network revenue slipped from $31.3 billion in 2023 to $30.4 billion in 2024, then $29.8 billion last year. In its most recent annual report, Alphabet attributed last year’s drop primarily to AdSense, and Google Network ad impressions fell 7% for the year.

The slide has continued into 2026. Network revenue fell about 4% year over year in the first quarter and slipped again in the second, coming in at $7.3 billion.

Compare that to the rest of the company. Second-quarter revenue from Google Search & other grew 17% year over year, YouTube ads grew 13%, subscriptions, platforms, and devices grew 15%, and Google Cloud surged 82%, led by demand for artificial intelligence infrastructure. Google Network was the only revenue line that shrank.

The business now accounts for about 6% of Alphabet’s total revenue. And the new rules, which aim to open Google’s auctions to more competition, could pressure that line further.

Does the ruling change the investment case?

Not much, I’d argue. The remedies land on tools in a small and fading corner of an otherwise thriving business. The tech company‘s second-quarter revenue rose 24% year over year, reaching $119.8 billion (the company’s 12th straight quarter of double-digit revenue growth). Further, operating income rose 30%, and the company’s operating margin expanded 2 percentage points to 34%.

Today’s Change

(1.59%) $5.36

Current Price

$342.48

Key Data Points

Market Cap

$4.1TMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary.

Day’s Range

$340.06 – $344.68

52wk Range

$226.11 – $408.61

Volume

20.7M

Avg Vol

31.1M

Gross Margin

60.94%

Dividend Yield

0.25%

The ruling mostly removes a tail risk. After all, a forced sale would have meant years of appeals and a messy separation. Instead, Alphabet gets compliance obligations in a business that matters less to its results with every passing quarter.

Of course, the Justice Department could still appeal, so the case may not be over. Still, the worst case is off the table for now.

Meanwhile, the stock trades around $342 as of this writing, well below its 52-week high of $408.61. With a price-to-earnings ratio of about 23 on the earnings analysts project for next year, shares arguably look reasonably priced for a company growing this fast with an expanding operating margin.

Ultimately, this case was never the reason to buy or avoid Alphabet stock. The growth story runs through Search and Google Cloud — and the court just confirmed the contested ad tech stays put, with new rules attached. I wouldn’t buy or sell shares over this ruling.