Agent Capital has raised $52 million for a maiden venture capital fund, according to a filing with the SEC.

The Cambridge, Mass.,- based biotech fund has a target of $150 million, the filing shows. It is being run by Managing Partner Geeta Vemuri, formerly a managing partner at Baxalta Ventures.

The fund initially had a target of $100 million, an earlier filing shows.

The filing can be found here.