Stocks slip as oil jumps on Middle East strikes: Monday recap

Wall Street spent the final trading day of August in the red. The S&P 500 fell 0.3% to 7,686.14. The Dow Jones Industrial Average dropped 374 points, or 0.7%, to 53,185.90, the weakest of the three headline gauges. The Nasdaq Composite held up better, little changed at 26,370.89. The losses were broad but shallow. One corner of the market ran the other way.

That corner was energy. The sector rose 2.0% and stood alone as the day’s only gainer, well clear of everything else on the board. Technology managed a slim 0.4% advance and was the only other group to hold above water. From there it was red across the map. Communication services lagged most, down 1.4%, with utilities off 1.2% and industrials lower by 1.1%. Materials and real estate each shed close to a percent, financials a shade less. Consumer discretionary and consumer staples both slipped about half a percent, and health care proved the mildest of the decliners, down 0.4%. The spread between energy at the top and communication services at the bottom ran more than three points, far wider than the move in the headline indices suggested.

The split traced back to the weekend. U.S. forces struck Iranian rocket launchers near the Strait of Hormuz, the first American military action in the region in about a month, and Iran’s Revolutionary Guard said it had targeted U.S. bases in the Gulf in response. U.S. crude oil climbed more than 3%, with Brent trading near $90 a barrel, as traders priced in the risk to shipping through a waterway that carries a large share of the world’s seaborne oil. Higher crude lifted energy producers and weighed on almost everything else, the familiar pattern when a geopolitical shock arrives through the oil market.

Breadth told the same story. The Russell 2000 tracker of smaller companies fell 0.6%, trailing the large-cap gauges as the more economically sensitive names absorbed the brunt of the risk-off tone. The Cboe Volatility Index rose 3.4% to 14.92, higher on the day yet still low by any historical measure, a sign the selling was orderly rather than a scramble for cover. The 10-year Treasury yield sat at 4.67%, firmer as the jump in oil revived inflation worries and pushed longer-dated rates up alongside the barrel.

The damage stayed contained. For all the day’s declines, the major averages still closed out August as a winning month, and the losses left the indices well within their recent ranges. Monday looked less like a change in trend than a single overnight event working its way through stocks, bonds and commodities at once.

The calendar turns Friday. September opens with a full run of economic data, and the monthly jobs report will be the marquee item for a market still weighing the Federal Reserve’s next move. Investors will also track any further developments out of the Middle East and the oil market, where the size of the next move depends on headlines no one can schedule. The reaction so far has been measured, and the coming days will test whether it stays that way.

This is a general-market summary for information only — not investment advice, and not a recommendation regarding any security.