Asian markets and US futures accelerated losses after US President Trump's tariffs take effect. Treasuries sold off.

Tariffs on a wide range of countries — from the lowest 10 percent to 49 percent on Cambodia and 46 percent on Vietnam — are set to kick in early Wednesday.

Bitcoin steadied and was back above $79,000 after dropping toward $76,000 the prior day. No big change is behind the move back upward, and analysts say more swings up and down are likely for markets in not only the days but also the hours ahead.