Stocks weaken into market close on reweighting By: CNBC.com News March 21, 2014 at 14:49 PM EDT Markets lose early momentum amid a sell-side imbalance in stock for sales at the close. Comments from Fed's Richard Fisher weigh too. Read More >> Related Stocks: Apple Cisco Systems Express Scripts Holding HEALTHCARE Illinois Tool Works International Business Machines Nasdaq Biotechnology Ishares ETF Sentinelone Inc Cl A TECHNOLOGY UTILITIES SEL