NEW YORK — Alphabet Inc. advanced 0.61% to $340.65 on Wednesday, September 3, 2026, as the Dow Jones Industrial Average recovered 295 points to 53,061.95 and investors absorbed two developments that collectively rewrote the company’s legal and competitive position in a single session.
A federal judge rejected the Justice Department’s demand to force Google to sell its ad exchange, choosing behavioral remedies over the structural breakup that antitrust regulators had pursued for more than two years. The ruling removed the most disruptive scenario for Alphabet’s advertising revenue, which grew 14% in the most recent quarter and remains the engine of a company generating more than $350 billion in annual revenue. Simultaneously, Google released Gemini 3.8 Flash, its third Flash iteration in six weeks, a model tuned for coding and enterprise workflows and priced at $0.75 per million input tokens, undercutting several competitors in the enterprise AI segment.
The two events arrived at a moment when Alphabet had already signalled a change in direction. Google started September, CNBC reported, with what the company framed as AI momentum after its longest monthly losing streak in over a decade. The August slide reflected sustained concern about whether Google’s core search business was structurally vulnerable to AI-native competitors, a thesis the new Gemini release directly challenges.
Berkshire Hathaway Chief Executive Greg Abel, speaking publicly this week, offered an unsolicited endorsement of Alphabet’s AI positioning, stating that Berkshire’s portfolio company exposure gave the firm visibility that supports confidence in Google’s standing as a winner in the current AI cycle. The comment carries weight: Berkshire has historically been conservative about technology endorsements, and Abel’s public statement is not the kind of thing Berkshire issues lightly.
The ad exchange ruling matters more structurally. The DOJ had argued that Google’s vertical integration across ad-buying tools, ad-serving technology, and its own publisher network constituted an illegal monopoly requiring forced divestiture. Judge Leonie Brinkema’s decision to instead impose behavioural constraints, limiting how Google packages and prices its ad products, leaves the business intact. For Alphabet’s revenue model, this is not a close call. A forced sale of the ad exchange would have required unwinding years of technical integration and exposed Google to direct competition from buyers with lower cost structures.
The company’s artificial intelligence product pipeline is now the primary stock-price driver. Gemini Ultra, released in the second quarter, showed meaningful gains in several enterprise benchmarks and is deployed across Google Workspace, Pixel devices, and the Gemini API. The Flash models, lighter, faster, and dramatically cheaper to run, are aimed at developers building applications on top of Google’s infrastructure, a market where OpenAI currently leads.
Alphabet’s stock, at $340.65, has climbed roughly 11% from its late-August low but remains about 10% below its 12-month high. Wall Street’s 12-month consensus price target has drifted higher on the back of the ad-revenue beat and the antitrust ruling, though analysts differ on whether the AI investment cycle, which consumed approximately $24 billion in capital expenditure during the first half of the year, will generate competitive returns before 2028.
What the company has not answered is whether the search revenue base that funds all of that investment is genuinely protected from AI-native query tools. Google has integrated Gemini into search results natively, which has reduced click-through rates on traditional blue-link results but has not yet produced a measurable decline in total search advertising revenue. Whether the model holds at scale remains the central open question in Alphabet’s investment case.
The antitrust ruling and the Gemini release do not answer that question. They do, however, remove two of the more acute short-term risks that were suppressing the stock through August. For a company of Alphabet’s size and cash generation, $28 billion in free cash flow in the most recent quarter, the removal of acute risk has a disproportionate effect on valuation multiples.
