NEW YORK (Reuters) -Investors are trying to game out how much tolerance U.S. President Donald Trump has for stock market losses after his latest tariff policies ignited a more than 10% wipeout on Wall Street, with some still holding out hope of eventual relief. A so-called "Trump put" - the option market equivalent of a presidential backstop for equities - underpinned Trump's first term, as he frequently cited stock market strength as proof his policies were working. Over the course of his first presidency the S&P 500 benchmark rose 68% and scaled record highs, while Trump cheered its progress, tweeting more than 150 times about the stock market.