—— Demand in the U.S. job market slowed in June; Citigroup hopes to expand by 500 people; Uber’s first quarterly free cash flow; Mysterious Chinese ADR surged 520%; AmericanDream defaulted on interest; Airbnb revenue rose 25%; Robinhood laid off another 23%. 1. U.S. job demands slowed in June The number of job vacancies in the …