Wednesday, October 21, 2026
Dow Jumps 1% on Earnings as Oil Eases and Megacap Tech Stalls the Nasdaq
Key Indicators
S&P 500 (Tue close)
7,712.57
+0.28% (up)Nasdaq Composite (Tue close)
26,424.82
-0.02% (down)Dow Jones Industrial Average (Tue close)
52,495.88
+1.02% (up)Russell 2000 (Tue close)
2,773.42
+1.65% (up)Brent Crude Oil (Tue settle)
$108.79
-0.69% (down)Market Recap
Tuesday's close: Dow leads, Nasdaq flat
U.S. stocks finished mostly higher Tuesday, October 20, as strong earnings and a pullback in oil helped the broad market erase morning losses. The Dow Jones Industrial Average gained 529.85 points, or 1.02%, to 52,495.88. The S&P 500 rose 0.28% to 7,712.57. The Nasdaq Composite slipped about 0.02% to 26,424.82, held back by declines in megacap names including Apple and Meta Platforms amid lingering doubts over whether AI infrastructure spending will pay off. Small caps led: the Russell 2000 rose 1.65% to 2,773.42.
Earnings movers: 3M, Equifax and Hasbro surge
3M rose about 5.8% after third-quarter sales of roughly $6.6 billion, adjusted EPS of $2.50 (up 12%) and a raised full-year adjusted EPS outlook of $9.10 to $9.15; it also expanded its relationship with Amazon's data center business, with Amazon receiving warrants for up to 3.2 million 3M shares tied to milestones. Equifax jumped 11.3% on results that beat estimates despite a weak U.S. mortgage market. Hasbro gained 11.2% after Magic: The Gathering topped $600 million in quarterly revenue for the first time. 3M's strength was the main lift for the price-weighted Dow.
Oil eases from near war-era highs
Brent crude futures settled at $108.79 a barrel, down 76 cents, or about 0.69%, after nearing $112 earlier in the session. Prices had been near their highest levels since the war with Iran began, and the intraday reversal helped stocks recover. Wednesday's focus turns to more earnings, including technology companies and their AI investment plans, with energy prices and Treasury yields still in view.
Concept of the Day
Price-Weighted vs. Market-Cap-Weighted Indexes
Indexes combine many stocks into one number, and the weighting rule decides which stocks move it most. The Dow Jones Industrial Average is price-weighted: each stock counts in proportion to its share price, regardless of the company's size. A $1 move in a $400 stock moves the Dow far more than a $1 move in a $40 stock. The S&P 500 and Nasdaq Composite are market-cap weighted: each company counts in proportion to its total market value (share price times shares outstanding), so the largest companies dominate. This produces very different behavior on the same day. A single high-priced stock with a big earnings move can drive the Dow even if it is a modest company by market value, while a decline in a few trillion-dollar tech companies can hold down the Nasdaq and S&P 500 even when most stocks rise. Equal-weight indexes and small-cap indexes like the Russell 2000 offer different views of how the typical stock is doing. Neither method is more correct; each answers a different question. Price weighting is a historical artifact that reflects how the Dow was first calculated by hand, while market-cap weighting mirrors what an investor holding the whole market would actually own.
Why it matters
Tuesday showed the split. The Dow rose 1.02% to 52,495.88, helped by 3M's 5.8% jump on earnings, while the Nasdaq slipped about 0.02% to 26,424.82 as Apple and Meta fell. The S&P 500 gained 0.28% and the Russell 2000 rose 1.65%. Reading only one index would have given a different story about the market, so check several before drawing conclusions about the day.
What to Watch
Wed, Oct 28
FOMC rate decision (Oct 27-28 meeting)
The Fed's decision amid elevated oil prices will set the tone for rate-sensitive assets.
Thu, Oct 29
GDP (Advance Estimate), 3rd Quarter 2026
The first read on third-quarter growth shows how the economy is holding up under high energy prices.
Thu, Oct 29
Personal Income and Outlays, September 2026
It includes the PCE inflation data the Fed watches closely.