Tuesday’s stock market session looked strong in the headlines and narrow underneath, and that gap is the most important thing investors should take into Wednesday. The Nasdaq Composite rose 1.2 percent, or 308.43 points, to 26,477.81, and the S and P 500 added 0.6 percent to 7,722.60, while the Dow Jones Industrial Average rose just 16 points to 52,377.57 after a choppy session in which 19 of its 30 components ended lower. At its intraday low, the blue chip index was down nearly 130 points. The market went up, but most of it did not go up together.
The breadth figures tell the story more honestly than the index levels. Six of the 11 tracked sectors fell on Tuesday, even as technology led with a 1.70 percent gain and semiconductors climbed 3.02 percent. The equal weight S and P fund gained only 0.11 percent, compared with 0.56 percent for the cap weighted fund, and volume on both major index funds finished below recent averages. A total of 16.1 billion shares traded, lower than the last 20 session average of 17.18 billion. Advancers outnumbered decliners by 1.83 to 1 on the New York Stock Exchange, and by 1.86 to 1 on the Nasdaq, which sounds healthy until it is set against the sector count: five sectors rose, six fell, and the gains were concentrated in the same technology pocket that has carried the market for much of the year.
What drove the technology pocket
Reports described Tuesday as a session buoyed by a rejuvenated artificial intelligence trade, stronger economic data and declining crude oil prices, with the Energy Select Sector fund falling 2.1 percent while the Information Technology fund rose 1.7 percent. The fear gauge, the CBOE Volatility Index, fell 4.7 percent to 17.52, suggesting calm rather than fear. That calm, combined with narrow leadership, is a familiar pattern: investors are willing to pay for growth stories they understand, and less willing to spread risk across the wider market until they see a reason to do so.
Wednesday gives them several reasons, in both directions. The Federal Reserve announces its rate decision at 2 p.m. Eastern Time, Microsoft and Alphabet report after the close, and the power and cooling trade that lifted Vertiv about 16 percent before the open suggests investors are already looking beyond chips to the infrastructure that artificial intelligence needs. Futures before the open were mixed, with S and P 500 futures up just 0.06 percent and Dow futures down 0.27 percent in one early reading, while Nasdaq 100 futures rose 0.32 percent.
Breadth is the test for the rest of the week
Reports of Tuesday’s session recorded the index gains and the sector split side by side, and US News Zone’s account of a careful reading is a useful parallel: a headline number can be true and still mislead if it is read without its context. For markets, the context is breadth. If Wednesday’s Fed decision and big tech earnings broaden participation beyond technology, Tuesday will look like the start of a healthier rally. If they do not, Tuesday will look like another day when a powerful pocket carried a market that most stocks did not join.
