Stock market again plunged to new lows for the second day in a row. Investors are apparently worried about relations with China continuing to deteriorate even further.

Thus far, no response from the White House.

The Dow Jones Industrial Average pared its losses Thursday after falling 784 points at its session low, as concerns over a trade impasse with China were compounded by the arrest in Canada of a high-profile Chinese tech executive.

In a frenzied day of trading that saw the Dow and the S&P 500 both lose their gains for the year, the blue-chip index plunged 500 points almost immediately after the opening bell and the broader S&P dipped into correction territory. The tech-heavy Nasdaq composite continued its slide further into correction.

Markets have been on a hair-trigger all week, in response to confusion over the exact details of an apparent trade cease-fire between President Donald Trump and China's President Xi Jinping. While Trump touted the meeting of the two world leaders on the sidelines of last weekend's G-20 economic summit as "amazing and productive" with "unlimited possibilities for both the United States and China, Beijing has been slow to corroborate that sentiment. China's Commerce Ministry eventually released a statement Wednesday calling the trade talks "very successful" but remained vague on the 90-day deadline for negotiations touted by the Trump administration.