CNBC Daily Open: Playing "chicken" in markets can be a risky affair
1. Trump threatens China with increased tariffs, raising steel duties to 50%. 2. S&P 500 rose 6.2% in May; mixed market performance noted recently. 3. Future trade talks between Trump and Xi may ease current tensions. 4. May jobs report may signal economic strength or downturn risk amid tariffs. 5. Investors focus on Treasury yields; Buffett increases short-term Treasury holdings.