October 21 Market Report: Amazon Tops Mega-Cap Gainers With 0.05% Rise
Amazon rose 0.05%, posting the largest gain among the top 30 stocks by market capitalization.
As of October 20, 2026, major U.S. stocks largely moved sideways with only slight fluctuations. With both gainers and losers staying within a ±0.05% range, the day stood out more for divergence among individual stocks than for any clear direction in the indexes. The session mirrored the previous day's Wall Street moves, where the Dow rose about 1% while the Nasdaq finished roughly flat. Buying spread into sectors outside tech, leaving indexes mixed and individual stocks mildly differentiated.
Mega-Cap Rankings Hold Steady... Only Semiconductors and Platforms Catch Their Breath
| Stock | Price | Change | Market Cap | P/E |
|---|---|---|---|---|
| NVIDIA | $217.09 | +0.01% | $5.24T | 27.4 |
| Apple | $342.94 | -0.00% | $5.00T | 39.3 |
| Alphabet A | $344.18 | +0.01% | $4.21T | 17.3 |
| Microsoft | $533.52 | +0.01% | $3.96T | 29.7 |
| Amazon | $262.45 | +0.05% | $2.83T | 21.1 |
| TSMC | $420.22 | +0.02% | $2.18T | 27.2 |
| Meta | $705.44 | -0.01% | $1.80T | 26.6 |
| Tesla | $368.06 | +0.04% | $1.45T | 340.8 |
| Broadcom | $334.59 | +0.02% | $1.60T | 42.7 |
| Micron | $904.90 | +0.03% | $1.02T | 12.2 |
As the table shows, the rankings at the top remain unchanged. NVIDIA held first place at $5.24 trillion, with Apple close behind at $5.00 trillion. Factoring in Alphabet's two share classes (C and A), a three-way race is effectively still in place. What stands out is the direction of the moves. Stocks with the relatively widest swings—Amazon (+0.05%), Tesla (+0.04%), Palantir (+0.04%), and Micron (+0.03%)—all closed higher. By contrast, decliners such as Apple, Meta, and Eli Lilly slipped only about 0.01%. The upward momentum was slightly stronger on the day.
What the Valuation Gaps Reveal
Placing individual P/E ratios side by side makes the market's preferences clear. Micron recorded the lowest valuation among the top 30, with a P/E of 12.2x. TSMC (27.2x), NVIDIA (27.4x), and Alphabet (17.1–17.3x) are also at or below the market average. By contrast, Tesla at 340.8x, Palantir at 167.4x, and AMD at 137.3x carry triple-digit valuations. AbbVie (79.9x), Costco (48.0x), and Broadcom (42.7x) also run high.
The gaps are stark even within the semiconductor sector. Micron and TSMC trade at 10–20x multiples, while AMD sits at 137.3x. Intel's earnings base is too weak for a P/E to be calculated, yet its EPS growth rate of 9,865.5% hints at a rebound. NVIDIA's 6,599.3% and TSMC's 4,430.2% EPS growth signal that a hypergrowth phase remains intact. Meanwhile, Tesla's EPS growth plunged to -4,709.0%, and Meta posted a lackluster -256.0%. When earnings don't back up rising prices, P/E pressure is bound to build.
Energy and Finance Lag While Dividend and Earnings Plays Defend
Sector trends point in different directions. ExxonMobil and Chevron were flat at -0.00% each, with EPS growth rates of -1,454.1% and -3,186.5%, respectively. Falling crude oil prices feed directly into their earnings. JPMorgan (-0.02%) and Visa and Mastercard (both flat) also failed to find direction. In contrast, Johnson & Johnson posted an EPS growth rate of 8,887.0%, and Berkshire Hathaway retained an undervalued P/E of 13.4x. In a mixed market, earnings stability and low valuations appear to have served as defensive assets.
Outlook: Earnings Will Decide the Direction
The biggest variable this week is Meta's earnings release. According to Yonhap News, Wall Street ended mixed ahead of Meta's report, with the Philadelphia Semiconductor Index falling 0.28%. With Meta's EPS growth already at -256.0%, a disappointing report could heighten the burden of its 26.6x P/E. On the other hand, the S&P 500 (+0.28%) and Dow (+1.02%) drawing strength from non-tech names, along with the KOSPI 200 night futures surging 1.84%, suggest buying appetite for strong earners remains alive.
The strategy is becoming clear. NVIDIA, TSMC, Alphabet, and Micron—all trading at P/E ratios of 17–29x with EPS growth in the thousands of percent—carry relatively light valuation burdens relative to growth. Tesla, Palantir, and AMD, where triple-digit P/E ratios coexist with weak earnings growth, look increasingly exposed to correction risk without an earnings turnaround. As oil tycoon J. Paul Getty called the 1920s boom "a prosperity with shaky roots," the day's numbers laid bare the cracks hidden beneath individual stocks behind a calm index. As earnings season kicks into high gear, those gaps are expected to widen further.
