The stock market has been on a roller coaster for 2 months — but the S&amp;P 500 is down only 2% over 12 months. Here are the big winners. https://t.co/zEiLV9H8Kn $AMD $NVDA $TSLA $HUM $DG $MSFT $AAPL $VRTX $REGN $BIIB $ATVI $NEM $COST $JD