Five things you need to know before the market opens on Tuesday August 15:
1. -- Stocks slump lower As China data, rate cuts, rattle global markets
2. -- Retail sales data on deck with economists looking for Amazon Prime Day Boost
3. -- Home Depot earnings top Street forecast, repeats full year outlook
4. -- Nvidia extends gains as Wells Fargo, UBS lift price targets into Q2 earnings
5. -- D.R. Horton shares leap after Warren Buffett reveals homebuilder stake
Billionaire investor Warren Buffett looks to have made a big bet on the U.S. housing market.