A positive earnings report from Dow Jones Industrial Average component American Express (AXP - Get Report) did most of the work for benchmark indexes. Amex's earnings win was enough to offset quarterly disappointments from the likes of Verizon  (VZ - Get Report) and eBay (EBAY - Get Report) . Foot Locker (FL - Get Report) has warned of lower profit in its first quarter than previously anticipated. CEO Richard Johnson said delays of income tax refunds had contributed to disappointing February same-store sales.  Buffalo Wild Wings  (BWLD) is under fire from activist investor Marcato Capital which wants the chain to oust CEO Sally Smith and appoint four nominees to their board. In a proxy filing, the firm said the status quo is unacceptable and new leadership is needed. Allstate  (ALL - Get Report) anticipates first-quarter catastrophe losses to equal roughly $508 million. The insurer said severe hail in Texas in March accounted for a third of total quarterly losses.