So, if you buy $XLF thinking you're getting financial and/or value exposure, you're also getting 2.7% exposure to a gigantic tech company since Berkshire is 13.61% of the XLF ETF. That makes it large enough to be one of the top 10 holdings of XLF. You really can't escape $AAPL. https://t.co/aTFmZaAnC9