Warren Buffett's Berkshire Hathaway reveals $4B stake in Google parent, sells more Apple
1. Berkshire acquired a $4.3 billion stake in Alphabet. 2. Berkshire reduced its Apple stake significantly to 238.2 million shares. 3. The filing is Buffett's last before retiring as CEO. 4. Berkshire's total equity portfolio is valued at $283.2 billion. 5. The changes affect Berkshire’s major tech investments.