4. Earnings: Costco, Lululemon Corporate earnings reports continue to trickle in, with a handful of large companies scheduled to report their latest financial results this week. On Tuesday, warehouse retailer Costco Wholesale (COST) is expected to report sales that fall short of analyst forecasts because of slow October store traffic likely outweighing a November rebound. Meanwhile, yogawear retailer Lululemon Athletica (LULU) reports its latest earnings on Wednesday. The company, which saw its shares decline recently over analysts' margin concerns, is expected to report a slight dip in third-quarter profit. Other companies reporting quarterly earnings this week include Photoshop-maker Adobe Systems (ADBE) and tax prep company H&R Block (HRB). 5.