BREAKING: Nasdaq Leads As Stocks Open Higher Detroit-based Rocket Cos. (RKT) is best known for its flagship brand, Rocket Mortgage, the largest U.S. retail mortgage lender. Rocket stock also was added to Investor's Business Daily's SwingTrader portfolio on Monday. For traders with a neutral to slightly bullish outlook on Rocket stock, a cash-secured put could be an attractive way to potentially buy the stock for a discount. Here's how a cash-secured put trade might look on Rocket. How The Cash-Secured Put W ...