NEW YORK (AP) — The market volatility of the last three months, caused partly by the war in Iran , has been a boon to Wall Street, as another set of banks reported strong profits helped by wild swings in markets and companies looking to make deals while the economy remains resilient. Bank of America said on Wednesday that first-quarter stock trading revenues were $2.8 billion, a 30% jump from last year, while Morgan Stanley’s much larger trading desk saw its equity trading revenues rise 25% to $