The above chart from the FRED system shows corporate spreads have widened. The Aaa (red line, left scale) rose from 1.6% to 1.9% since the first of the year while the Baa spread (blue line, right scare) increased from 2.2% to 3.2%, but over a longer time period (approximately mid-2014 to now).
The CCC chart is more concerning:
