With new-ish CEO Greg Abel more than seven months into the job, investors still appear to view Berkshire Hathaway as "Old Reliable." On Saturday, Berkshire reported that it deployed $19.8 billion into the stock market in the second quarter, putting an end to three years of net selling. But he was gentlemanly enough to leave Abel with a $369 billion pile of cash with which to blaze his own trail. In the second quarter, Abel started putting it to use. Berkshire also deepened its investment in Alphabet, buying a whopping $10 billion in shares.