By Saqib Iqbal Ahmed, Suzanne McGee and Saeed Azhar

NEW YORK (Reuters) -Wall Street traders and investors have been sent to the brink over the past week by President Donald Trump’s tariff policy, scrambling to figure out strategies and calming clients as trillions were wiped off stock market values.

A massive relief rally, however, comes with a caution sign.

Since announcing sweeping tariffs on April 2, the S&P 500 has done a near round-trip of historic proportions. The benchmark index extended its slide from its February high to the brink of confirming a bear market, as investors priced in dire scenarios for the economy after Trump announced tariffs that would raise U.S. trade barriers to the highest levels in over a century.

The Cboe Volatility index, Wall Street’s “fear gauge,” soared earlier this week to its highest closing level since the COVID-19 pandemic five years ago.

Then, in a stunning reversal on Wednesday, Trump said he would temporarily lower the hefty duties on dozens of countries while further ramping up pressure on China, prompting a massive relief rally, sending the S&P 500 up nearly 10%, its biggest one-day jump since October 2008.

The rapid policy changes translated into non-stop action, stress and drama on trading floors and investment houses.

“It’s been a quite a wild ride,” said Joe Tigay, portfolio manager for Rational Equity Armor Fund, who said it brought back memories of trading through massive swings during the pandemic. “Personally, honestly, this is what I live for.”

The rapid pace of unfolding events in recent days prompted a deft juggling of priorities, including client calls, trading and making sense of markets, said Chris Murphy, co-head of derivative strategy at Susquehanna Financial Group, as the market drama surpassed the wild trading seen during the COVID-induced market crash of March 2020.

“This is more headline driven than what we saw in COVID,” Murphy said. “There’s just not enough time because you’re going from one thing to the next.”

Clients wanted frequent updates as market losses stacked up, advisers said.

“We reached out to as many clients as possible via a client letter and phone calls,” said Gina Bolvin, president of Bolvin Wealth Management Group in Boston.

“Some of my nervous clients were comforted when they learned that as the market was declining I had been investing some of my own money.”

But while some have embraced the volatility, others caution that the market remains fragile, U.S. policy remains unpredictable and that the U.S. is not out of the woods.