Wall Street’s best minds are falling over themselves to describe the cataclysms that would befall equities should Elizabeth Warren get elected. It’s a brand of analysis whose recent track record is abysmal.

The S&P 500 will plunge 25% if the Democrat becomes president, says Paul Tudor Jones, the hedge fund manager. Discovery Capital Management founder Rob Citrone says she’s “the single biggest risk for the market” and calculates the downside at up to 20%. Billionaire Leon Cooperman told CNBC earlier this month that the market would drop 25% if Warren or Bernie Sanders win.

That’s a lot of certainty to attach to predictions Wall Street has shown no ability to get right in the past. The confidence sounds particularly rich considering what investors said about the man Warren aims to dethrone, Donald Trump.

“Strategists predicting the impact of a presidential election are worse than the pollsters,” Matt Maley, equity strategist at Miller Tabak + Co., said by phone. “It’s one of the best contrary indicators out there.”

Sure, the forecasts could come true. Maybe Warren’s plans to rein in Wall Street and corporate America will kill the economy, or maybe the bull market will just die of old age. But the evidence is scant a president’s political leanings do much to sway stocks. Variations in equity performance when a Democrat is in the White House are almost negligible when compared with Republicans, according to research from Vanguard that was published before the 2016 election.

Everyone knows stocks soared under Trump. Everyone did not know that would happen before he won. Heading into November 2016, strategists and economists focused on his unpredictability, his protectionist ideas, instead of pro-growth policies like tax cuts. Many predicted a more volatile Trump would send stocks into a correction.

Strategists at RBC Capital Markets LLC said prior to Election Day that a Trump victory would send the S&P 500 down 10 to 12%. Barclays had predicted a drop of as much as 13%. The team at JPMorgan advised investors to sell the rebound that materialized just a few hours after Trump won.

It wasn’t just stock handicappers. Two economics professors, Justin Wolfers and Eric Zitzewitz, wrote a paper on the topic for Brookings in October 2016. They analyzed the futures market during the first presidential debate and extrapolated the reaction to conclude a Trump win would send stocks down 10% to 15%. A Massachusetts Institute of Technology economist posited that a Trump presidency would cause a stock market crash and could plunge the global economy into recession.

Partly, it was a reflection of polling data. Since Trump was viewed as a long shot, many predicted investors would be shocked into selling if he won. That was the thinking at Citigroup, where strategists said the S&P 500 could lose 3% to 5% immediately. They added that a Trump win would also pose risks to stocks in the long term.

The first prediction came true. S&P 500 futures were halted after a 5% plunge in the hours after the 2016 race was called. But they rebounded just as fast and the index has gained more than 40% since Trump’s election.

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