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Another volatile day on Wall Street pushed the S&P 500 Index back to the brink of a bear market as the Trump administration doubled down on its plans to enact hefty tariffs that threaten to send the American economy into a recession.

The S&P 500 fell 1.6% in a fourth straight session that has seen moves of at least 4% from peak to trough. The index powered higher by as much as 4% in early trading on optimism that President Donald Trump would negotiate lower rates on key allies.

Meanwhile President Trump’s tariffs are rattling US consumers, who are stocking up on everything from cars to olive oil and iPhones. The behavior offers some good news for businesses that are rushing to figure out how to respond to the upheaval caused by Trump’s global trade war.

Today's show features:

• Vincent Cignarella, Bloomberg Markets Live Macro Strategy
• Wendy Schiller, professor of political science at Brown University
• Swamy Kotagiri, Magna International Chief Executive Officer