NEW YORK (AP) — A federal fraud trial began Monday for the owner and chief financial officer of a hedge fund that collapsed when it defaulted on margin calls, costing leading global investment banks and brokerages billions of dollars. Bill Hwang, the founder of Archegos Capital Management, and his former CFO Patrick Halligan, are being tried together. Prosecutors have accused Hwang of lying to banks to get billions of dollars that his New York-based private investment firm then used to inflate the stock price of publicly traded companies and grow its portfolio from $10 billion to $160 billion.