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5 Top Stock Gainers for Tuesday: Rocket, Square and Nielsen

Square, Rocket Cos., Energy Fuels, Nielsen Holdings and Mesa Air Group are five top stock gainers for Tuesday.

Stocks finished lower Tuesday, one day after the S&P 500 posted its best trading session since June.

Here are some of the big movers in the stock market Tuesday:

1. Square | Increase 4.7%

Square  (SQ) - Get Square, Inc. Class A Report shares rose after the company said that its industrial bank, Square Financial Services, had begun operations. 

The bank opening continues Square's diversification from strictly payment processing to broader financial services.

2. Rocket Cos. | Increase 71%

Shares of Rocket Cos.  (RKT) - Get Rocket Cos. Inc. Report soared after CNBC reported the stock could be a target on social media site Reddit.

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The online mortgage provider currently has large short bets placed against it by hedge funds, CNBC noted.

3. Energy Fuels | Increase 19%

Energy Fuels  (UUUU) - Get Energy Fuels Inc. Report climbed after the uranium miner and Neo Performance Materials, a rare earth manufacturer, said they had launched a rare earth production initiative spanning the European and North American regions. 

The initiative will produce value-added rare earth products from natural monazite sands, a byproduct of heavy mineral sands mined in the southeastern U.S.

4. Nielsen Holdings | Increase 7.6%

Nielsen Holdings  (NLSN) - Get Nielsen Holdings Plc (NLSN) Report climbed after Roku  (ROKU) - Get Roku, Inc. Class A Report said it had agreed to buy the company's Advanced Video Advertising business, which includes Nielsen's video automatic content recognition and dynamic ad insertion technologies.

5. Mesa Air Group | Increase 9%

Mesa Air Group  (MESA) - Get Mesa Air Group Inc Report rose after saying that it had entered a conditional agreement with Gramercy Associates of London to develop a European based joint venture. 

The current plan is to begin operations this year.