Berkshire shares rise on surge in operating earnings, but questions linger about cash
1. Berkshire operating earnings surged 71% to $14.5B in Q4. 2. Insurance underwriting profits jumped 302% to $3.4B this quarter. 3. Investment gains fell, with over $134B in equity sales noted. 4. Record cash reserve reached $334.2B amid cautious buying. 5. Buffett favors long-term equity strategy despite high market valuations.