Monday brought a wave of optimism to Wall Street, with U.S. stock futures building on Friday's momentum. The catalyst? New York Fed President John Williams hinted that a December rate cut remains on the table, giving investors just the kind of encouragement they needed.

By the closing bell, the Dow Jones Industrial Average had climbed 0.44% to 46,448.27, the S&P 500 added a solid 1.5% to reach 6,705.12, and the Nasdaq jumped an impressive 2.69% to 22,872.00. Tech stocks led the charge, and several companies stood out among retail investors throughout the day.

Broadcom Surges on Fed Rate Cut Optimism

Broadcom Inc. (AVGO) delivered one of the day's most impressive performances, with shares soaring 11.10% to close at $377.96. The stock touched an intraday high of $382 and a low of $347.66, approaching its 52-week high of $386.48. After hours, momentum continued with shares climbing another 1.49% to $383.60.

The semiconductor giant benefited from renewed optimism sweeping through the chip sector. Federal Reserve Governor Christopher Waller's supportive comments about potential rate cuts provided additional fuel, reminding investors just how sensitive tech valuations are to interest rate expectations.

Alphabet Hits New Highs on AI Chip Ambitions

Alphabet Inc. (GOOG) saw its Class C shares climb 6.28% to $318.47, with an intraday high of $319.80 marking a new 52-week peak. After hours, the stock gained another 2.65% to $326.90. The company's Class A shares (GOOGL) followed a similar trajectory, ending 6.3% higher at $318.58 and rising an additional 2.6% to $327 in extended trading.

The real story here is Alphabet's reported negotiations with Meta and other cloud clients to supply Google's AI TPU chips. This represents a direct challenge to Nvidia's dominance in the AI chip market, and investors are taking notice. While Alphabet shares jumped roughly 2% after hours on the news, Nvidia slipped about 2%.

It's worth noting that Google's stock has surged approximately 52% since mid-September, powered largely by positive reception to its Gemini 3 AI release. The company is clearly finding its footing in the AI race.

SanDisk Celebrates S&P 500 Promotion

SanDisk Corporation (SNDK) enjoyed a 13.33% rally, closing at $226.96 with an intraday range of $205.13 to $228.18. After hours, the stock extended gains by 7.29% to $243.50.

The excitement stems from SanDisk's addition to the S&P 500, where it will replace Interpublic Group following that company's acquisition by Omnicom. The change takes effect November 28, while PTC Therapeutics will take SanDisk's spot in the S&P SmallCap 600.

This promotion comes on the heels of strong fourth-quarter results reported on November 6, when SanDisk beat both revenue and earnings per share estimates for the eighth time in ten quarters. That's the kind of consistent performance that earns you a seat at the big table.

Novo Nordisk Stumbles on Alzheimer's Trial Results

Novo Nordisk A/S (NVO) had a rough day, with shares falling 5.58% to $44.97. The stock traded between $43.08 and $45.22, hitting its 52-week low of $43.08 during the session. Shares recovered slightly after hours, rising 1.07% to $45.45.

The culprit was disappointing news from the company's 2-year evoke and evoke+ trials. The studies, involving 3,808 adults with early Alzheimer's, found that semaglutide failed to demonstrate superiority over placebo in slowing disease progression based on CDR-SB scores. While the drug improved biomarkers, those improvements didn't translate into meaningful clinical benefits.

Novo Nordisk announced it will discontinue the 1-year extension phase of the trials, though semaglutide remained safe and well-tolerated in patients aged 55 to 85. It's a reminder that promising biomarker data doesn't always mean success in the clinic.

Zoom Delivers Solid Quarter and Raised Outlook

Zoom Communications Inc. (ZM) barely budged during regular trading, dipping just 0.04% to close at $78.60 with an intraday range of $78.59 to $80.27. The after-hours session told a different story, with shares popping 3.6% to $81.45.

The company reported third-quarter revenue of $1.23 billion and adjusted earnings of $1.52 per share, beating analyst forecasts of $1.21 billion and $1.44 per share respectively. Enterprise revenue rose 6.1% year-over-year, and Zoom ended the quarter with 4,363 large customers. Operating cash flow came in at $629.3 million.

Management also issued slightly higher guidance for both the fourth quarter and full year, raising the fiscal 2026 revenue and earnings outlook. For a company that saw explosive pandemic growth followed by questions about its post-pandemic relevance, these results suggest Zoom has successfully transitioned into a steady enterprise player.