Story highlights Hillary Clinton's super PAC, Priorities USA Action, collected more than $9.5 million in January

Donations include $3.5 million from James Simons, a hedge fund manager, and $1 million from trial attorney Steve Mostyn

(CNN) Hillary Clinton's super PAC collected more than $9.5 million in January, more than half of which came from five wealthy donors.

Priorities USA Action earned a $3.5 million check from James Simons, a New York City hedge fund manager and philanthropist on Jan. 11, the group told the Federal Election Commission in a filing on Saturday.

Jay and Mary Pritzker, two members of a prominent and wealthy Chicago family, also gave a total of $2 million to the group just a few days before Clinton essentially tied Bernie Sanders in Iowa. Slim-Fast founder Daniel Abraham gave $1 million. Texas trial lawyer and prominent Democratic donor Steve Mostyn added $1 million.

Clinton herself added to that financial advantage over Sanders -- who does not have an authorized super PAC -- with a $14.9 million haul for her campaign. She had nearly $33 million on hand as of Jan. 31. Priorities USA Action had nearly $45 million in cash on hand at the end of January.

Sanders' campaign outraised Clinton's campaign in January though, raising $21.3 million. His campaign now claims more than 4 million individual donors and does not have an official super PAC.

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