Quick Hits

• Nvidia (NVDA) is buying Hugging Face. The Sept. 3 agreement to acquire one of the most widely used platforms for sharing AI models will cost nearly twice as much as Nvidia's last big acquisition, per the Motley Fool — which invokes that earlier deal's history as the measuring stick.
• Tesla (TSLA) fell 5.92% Friday after an invite-only Cybercab launch event left investors underwhelmed and federal safety regulators opened an audit query into the new robotaxi. Compounding the story: Cathie Wood's two biggest fund positions are both Elon Musk companies — 16% of the fund combined.
• Insiders are cashing out at the highs. Okta (OKTA) CFO Brett Tighe sold 80,000 shares worth $12.9 million after the stock hit a 52-week high, and a StubHub (STUB) executive shed more than 10% of his stake for ~$1.1 million.
• Data center is becoming AMD (AMD). The segment hit 58% of revenue last quarter — $6.7 billion of a record $11 billion-plus quarter — up from ~42% in Q2 2025, and the Fool predicts it tops 70% in 2027 before the Helios ramp even finishes.
• The bull market is nearly four years old (born Oct. 12, 2022), and by some measures that longevity is itself a potential problem, the Fool cautions.

Markets Overview

The S&P 500's current bull market, dated from its Oct. 12, 2022 start, is now approaching year four — long enough that the Motley Fool benchmarked it against the historical average lifespan of bull runs and posed the question directly: should investors be nervous? By some measures, the answer is that the run's age is the risk.

Meanwhile, the tech trade keeps paying. The Vanguard Information Technology ETF (VGT) is up 27% this year, crushing the S&P 500, and the Fool tackles the classic momentum dilemma: some investors worry they've already missed the rally, but that doesn't automatically settle whether it's still a buy for long-term holders.

Stock News

• Nvidia's price of admission. Announced September 3, the Hugging Face acquisition will cost nearly twice as much as Nvidia's last big acquisition — a deal the Fool frames as the precedent for what a major purchase can become. The premium signals how strategic AI model infrastructure has become to the chipmaker's roadmap.
• Tesla's double blow. The 5.92% Friday slide came from both directions at once: a Cybercab event that left investors underwhelmed and a federal safety regulator audit query into the new robotaxi, per the Fool. The fallout lands hard on Ark Invest, where Musk-linked names now anchor the book.
• Okta (OKTA): CFO Brett Tighe sold 80,000 shares of Class A common stock on September 2, per an SEC Form 4 — a $12.9 million transaction executed right after the stock touched a 52-week high.
• StubHub (STUB): Executive Vice Chairman and Chief Legal Officer Mark Streams sold roughly 166,000 Class A shares for approximately $1.1 million — more than 10% of his company holdings.

Hot Sectors

AI infrastructure remains the market's engine. AMD's data center segment produced 58% of company revenue last quarter — $6.7 billion of a record quarter above $11 billion — up from about 42% in Q2 2025. The Fool's forecast: data center passes 70% of AMD's revenue in 2027, before the Helios ramp is finished. Stack that on Nvidia's Hugging Face outlay and VGT's 27% run, and the AI complex continues to absorb an outsized share of investor attention and capital.

Nuclear's two-horse race. The Fool stages a head-to-head between Constellation Energy (CEG) — operator of the largest U.S. nuclear portfolio at more than 22 gigawatts of capacity exiting fiscal 2025 — and Vistra (VST), weighing which is the better buy right now. For investors sizing up the sector's leading names, scale is CEG's calling card.

Market Analysis

Three threads worth tracking into the new week:

1. Insider behavior meets bull-market math. Executives at Okta and StubHub selling into strength — one sale right on the heels of a 52-week high — lands as the bull market closes in on year four. Watch whether Form 4 activity broadens across names trading near highs.
1. Concentration cuts both ways. VGT's 27% year-to-date gain and Ark's 16% allocation to two Musk companies show how much of the market's return now rides on a narrow set of AI- and Musk-linked names. Tesla's 5.92% Friday drop is a live demonstration of the downside of that same math.
1. The AMD mix shift. Data center went from 42% to 58% of revenue in roughly a year; the Fool's 70%-by-2027 prediction is the yardstick to hold management against as Helios ramps.

Also on watch: follow-through from the federal audit query into Tesla's robotaxi, and further detail on the Nvidia–Hugging Face deal terms that explains what "nearly twice as much" actually buys.