Trading Block: Icahn says "dramatically undervalued" Apple should trade at $240.

AccuShares is set to list a couple of interesting products on Tuesday: AccuShares Spot CBOE VIX Fund Up Shares (VXUP) and AccuShares Spot CBOE VIX Fund Down Shares (VXDN).

Odd Block: Calls and puts trading in CBRE Group Inc. (CBRE), puts trade in DSW Inc. (DSW), and calls trade in Molson Coors Brewing Company (TAP)

Strategy Block: Uncle Mike Tosaw discusses trading in SPY

Around the Block: Earnings: Consensus estimates from Wall Street analysts call for year-on-year earnings growth from big-box retailers Home Depot Inc. and Target Corporation, but for earnings declines from Best Buy Co Inc., Staples, Inc. and Wal-Mart Stores, Inc. when they report this week.