Sony shares rise about 2% in volatile trading following share buyback announcement

1. Sony announced a 250 billion yen share buyback, boosting share price by 2%. 2. Operating income surpassed estimates but decreased 11% compared to last year. 3. Sony plans a partial spinoff of its financial unit, distributing shares to shareholders. 4. Forecasted operating profit is lackluster, only rising 0.3% to 1.28 trillion yen. 5. Potential tariff impacts due to trade war may vary significantly for Sony.