What happened The stock market was having a generally negative day on Wednesday, with all three major market indexes down by 1% or more at 2 p.m. EST. But mortgage leader Rocket Companies (NYSE: RKT) was a big exception, with shares higher by 9%. So what There are two catalysts that could be propelling the Rocket Mortgage and Quicken Loans parent higher today. Image source: Getty Images. First, Rocket just launched a national directory of mortgage brokers on its website, which gives potential borrowers who want to work with a local independent mortgage broker a way to start their mortgage process through Rocket's platform. In short, it gives buyers more choice, which could ultimately increase loan volume from a subset of the mortgage borrower population who haven't been using Rocket's platform. Second, you may have noticed that we're seeing big short squeezes in the market. If you haven't, take a look at the price action in stocks like GameStop and AMC Entertainment. You can read this primer on short squeezes, but the general idea is that these companies were some of the most heavily shorted stocks in the market, and big short-sellers are now being forced to cover their positions. While Rocket isn't nearly as big a short-seller target as some other companies, it is still one of the more heavily shorted stocks in the market. At the end of 2020, Rocket had short interest of 31.4%, which indicates that nearly one-third of the shares available to trade were sold short. Now what Of these two news items, only one is material to long-term investors. While short squeezes are temporary, the launch of a mortgage broker directory could certainly be a catalyst for increased origination volumes on Rocket's platform. 10 stocks we like better than Rocket Companies, Inc.When investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Rocket Companies, Inc. wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of November 20, 2020 Matthew Frankel, CFP has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source