Key Points
Democrats won control of both the House and the Senate in Tuesday's midterms, and voters sided against data centers in every one of 41 local ballot measures except one, according to Ballotpedia and CNBC.
Amazon jumped 6.1% to $266.03 on Wednesday and Microsoft jumped 6.7%, as investors bet that limits on new construction make the data centers Big Tech already owns more valuable.
The companies that build and power new data centers sold off: CoreWeave tumbled 9.9%, Vistra tumbled 13.8% and Vertiv tumbled 12.9%.
AMD beat estimates with $13.38 billion in revenue, guided fourth-quarter sales to about $17 billion versus roughly $16.23 billion expected, and rose 1.0%.
Stocks rallied: the Dow jumped 1,570 points, or 3.0%, while the S&P 500 rose 1.6% and the Nasdaq rose 1.4%.
Voters went to the polls on Tuesday and delivered two verdicts.
The first was political. Democrats took control of both chambers of Congress.
The second was about the AI boom itself. In 41 local ballot measures across 10 states, voters were asked whether to restrict data centers in their communities. According to Ballotpedia and results gathered by CNBC, voters sided against data centers in every single one except a measure in Harwood, North Dakota.
You might expect that to be terrible news for the companies spending hundreds of billions of dollars on AI. Instead, Amazon jumped 6.1% on Wednesday. The pain landed somewhere else entirely.
Why Big Tech Rallied
The logic is simple once you see it.
Amazon, Microsoft, Alphabet and Meta already own enormous fleets of data centers, and they have spent the past year telling investors they cannot build capacity fast enough. If new construction gets harder, the capacity they already have becomes scarcer, and scarcer means more valuable.
"The hyperscalers already have data centers, so those assets are more valuable now because there's not going to be an overbuild of data centers," one market strategist told Reuters. A slower buildout also means slower capital spending, which has been crushing their free cash flow.
That cash-flow worry is what hammered these stocks just days ago. On Tuesday, Dylan named data center pushback as one of three forces behind his call that the AI trade just changed. One day later, voters proved his point. Reuters estimated Wednesday's Big Tech rally at roughly $750 billion in market value.
Amazon closed at $266.03, and Microsoft jumped 6.7%. Amazon also got help from consumer stocks: Booking Holdings jumped about 11% midday after strong results, lifting travel and retail names across the board.
Who Got Hurt
The losers were the companies that only make money if new data centers keep getting built.
CoreWeave, which rents out AI computing power and depends on fresh capacity coming online, tumbled 9.9%. Its bonds fell too. According to Bloomberg, CoreWeave's unsecured notes due in 2031 dropped to a low of 79.5 cents on the dollar, with yields on some of its debt now above 15%. That followed the win by Texas Governor-elect Gina Hinojosa, who campaigned on halting new data center development in the state.
Texas matters more than almost anywhere else. Democrat James Talarico won the state's Senate seat 55% to 43%, after a campaign in which he made regulating AI data centers a central issue.
Power producers felt it next. Vistra, one of the companies most exposed to data center projects in Texas, tumbled 13.8%. Constellation Energy and GE Vernova also fell sharply during the session, according to Reuters.
The equipment makers were hit as well. Vertiv, which supplies the power and cooling gear inside data centers, tumbled 12.9%. Last week, we wrote that two ways to play the AI power buildout had split apart, after Vertiv jumped nearly 17% on record orders. On Wednesday, the market rewrote that story in a single session. Comfort Systems USA, a major data center contractor, fell about 17% midday.
AMD Proved the Demand Is Still There
Here is the twist. The AI demand story itself got stronger overnight.
AMD reported third-quarter revenue of $13.38 billion, ahead of the $13.09 billion Wall Street expected, and adjusted earnings of $2.09 a share versus $1.95. Data center revenue jumped 97% to a record.
The guidance was even better. AMD expects fourth-quarter revenue of about $17 billion, plus or minus 3%, versus analysts' estimate of about $16.23 billion. CEO Lisa Su said total revenue should grow more than 80% in 2027, with data center sales making up more than 80% of the business.
AMD gained a modest 1.0% to $488.78. Nvidia, by contrast, fell 3.1%, lagging the rest of Big Tech.
That gap is the real lesson of the day. Just as we saw with Palantir's record quarter followed by a falling stock, the market is no longer rewarding everything with "AI" attached. It's sorting the owners of scarce assets from the companies that need the buildout to keep accelerating.
The Rest of the Market
Wall Street cheered the result overall. The Dow jumped 1,570 points, or 3.0%, its biggest one-day gain since April 2025. The S&P 500 rose 1.6%, and the tech-heavy Nasdaq rose 1.4%.
Oil collapsed. West Texas Intermediate crude fell nearly 9% to about $87.59 a barrel by early afternoon, and Brent dropped below $100 for the first time since October 7, as traders bet a Democratic Congress could hasten an end to the Iran war. Vice President JD Vance blamed the Republican defeat on the conflict. Energy and defense stocks fell, with Lockheed Martin down about 6% midday.
Treasuries rallied, pulling the 10-year yield down toward 4.90%. Gold jumped more than 3%. Earlier in the day, ADP said private employers added 86,000 jobs in October, slightly ahead of the 75,000 economists expected.
What Lands Next
Qualcomm, Arm, AppLovin and MercadoLibre all reported after Wednesday's close, too late for this article. Vistra reports Friday morning, and investors will want to hear how management plans to handle a governor who has promised a data center moratorium. The October jobs report also lands Friday.
The bigger question will take months to answer. A new Congress takes office in January, and state and local governments are already moving. If building new data centers keeps getting harder, the companies that already own them could keep winning, while the companies racing to build more face a much tougher road.
This article is for informational and educational purposes only and does not constitute investment advice or a recommendation to buy or sell any security.
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