Tech giants Apple (AAPL), Meta Platforms (META), Nvidia (NVDA) and Alphabet (GOOGL) made the biggest stock buybacks in the third quarter, as S&P 500 companies made record 12-month repurchases despite some cautious spending. Third-quarter total share repurchases rose 6.2% to $249 billion from the second quarter, and climbed 9.9% from the year-earlier period, according to S&P Dow Jones Indices. For… ...