By Lewis Krauskopf and Saqib Iqbal Ahmed

NEW YORK (Reuters) – A dramatic U.S. stock slide is fanning fears of even more dire scenarios for the market, as investors weigh the potential for a prolonged global trade war and a much dimmer corporate profit outlook.

Stocks swung wildly on Monday, with the benchmark S&P 500 down well over 4% at one point, as investors continued to grapple with President Donald Trump’s sweeping tariffs that last week drove the biggest weekly drop for the stock market since the onset of the COVID-19 pandemic five years ago.

With so much unclear about where the tariff battle will lead, Wall Street strategists contemplated how much more of a beating stocks could take, including that the S&P 500 could fall by nearly half from its February 19 all-time high. The index ended on Monday at 5,062.25, down more than 17% from that peak.

Matthew Maley, chief market strategist at Miller Tabak, said a decline in the S&P 500 in coming months to 4,300 was “very possible,” and a fall to 4,000 or lower was not out of the question. Trade tumult aside, Maley said, markets had been overly optimistic about the near-term profit potential from artificial intelligence and not properly factoring in weakening consumer behavior.

“This is more than tariffs,” he said. “This is the process of the market falling back in line with its underlying fundamentals.”

The worst-case scenarios from some analysts saw the S&P 500 dropping as much as roughly 50% from its all-time high, which would be akin to the aftermath of the bursting of the dot-com bubble in 2000.

The recent drop has been one of the steepest concentrated selloffs for U.S. stocks, on par with the speed and intensity of drawdowns seen during the COVID-19 swoon in 2020 and the financial crisis slide in 2008, and has put the S&P 500 close to bear market territory.

The S&P 500’s combined 10.5% decline last Thursday and Friday was the index’s fourth biggest two-day drop since 1950, according to Keith Lerner, co-chief investment officer with Truist Advisory Services. The biggest two-day falls occurred in March 2020, when COVID-19 was hitting; in November 2008, during the financial crisis; and in 1987, for the two-day period that included Wall Street’s “Black Monday.”

Despite the wild swings on Monday, the S&P 500 ended down just 0.2%. Even so, the Cboe Volatility index, Wall Street’s “fear gauge,” registered its highest closing level in five years.

JPMorgan equity strategists on Monday outlined a year-end S&P 500 target of about 4,000 as their “bear case,” which included assumptions of no tariff relief and a 2026 earnings view that implied two years of no real profit growth.