Cramer's lightning round: If Zuora's stock dips, buy more By: CNBC.com News August 08, 2018 at 18:49 PM EDT Jim Cramer zooms through his take on callers' favorite stocks, including a play on the growing subscription economy. Read More >> Related Stocks: American Electric Power Crispr Therapeutics Ag Eagle Materials Inc Enable Midstream Partners LP Energy Transfer Operating LP Magellan Midstream Partners LP MasterCard Sempra Energy Sientra Inc Tractor Supply Visa