* Investors cautious of Trump's protectionist trade policies * Wall Street optimistic about Trump's pro-business stance * S&P 500 rose 19.4% in Trump's first year (Recasts, adding tariff threats and reaction in Asian markets. Changes dateline to Jan 21.) By Suzanne McGee and Saeed Azhar NEW YORK/SINGAPORE, Jan 21 (Reuters) - Markets greeted Donald Trump's second inauguration with a sense...

(Updates with Nikkei levels) TOKYO, Jan 21 (Reuters) - Japan's Nikkei share average erased early gains to trade flat on Tuesday, as traders assessed the possibility of U.S. President Donald Trump imposing new tariffs on global firms. By 0154 GMT, the Nikkei was trading flat at 38,901.44. The index rose as much as 0.86% earlier in the session following overnight...

* US 2-year, 10-year yields slip but tariff threat lingers * US rate futures price in 44 bps of easing in 2025 * Analysts expect more to come By Ankur Banerjee SINGAPORE, Jan 21 (Reuters) - U.S. Treasury yields slipped on Tuesday after President Donald Trump did not impose tariffs on his first day in office, suggesting a gradual approach...

* Investors cautious of Trump's protectionist trade policies * Wall Street optimistic about Trump's pro-business stance * S&P 500 rose 19.4% in Trump's first year * Markets closed Monday for Martin Luther King Jr. Day (Updates paragraphs 2-11 with Trump's speech) By Suzanne McGee and Saeed Azhar NEW YORK, Jan 20 (Reuters) - Investors welcomed Donald Trump's second inauguration on...