Stock market: Volatility expected as $4 trillion in options set to expire: shares #stockmarket #yahoofinance Yahoo Finance's Jared Blikre, Brad Smith and Brian Sozzi focus on how the inventory market is ... atOptions = { 'key' : 'a8dfc29b76f8e0e43144f40c1f6e4e79', 'format' : 'iframe', 'height' : 90, 'width' : 728, 'params' : {} }; document.write('');