Buffett Watch: American Express challenges Apple for No. 1 slot in Berkshire's portfolio ⊕ found 2026 › Jan › 31 (Sat) @ 15:06 UTC a story from CNBC ⚠️ › Top News Buffett ■■ Watch ■■ American Express ■■ Apple ■■ No ■■ Berkshire ■■ Amex ■■ preview sentiment