We were under the impression that the stock market roared higher after reports of a trade deal going through. Nothing had been signed. Nothing had been official. But the market wanted good news and it certainly got it. The real reason the stock market went higher however, was that QE4 has been confirmed. The Fed is refusing to call it QE but by anything other than its name, it’s QE so it really doesn’t matter. True panic has set into the financial system and their acknowledgement is now official.
I guess you meant QE5. QE4 ended 5 years ago. Why do you say it's a QE? A QE is bullish for stock and bonds, But bonds have performed very badly since latest trade deal reports. I see it as investors turn more risk-taking as a trade deal could reduce the chance of a recession.