Every three months, large hedge funds with over $100 million in assets are required to file a form that discloses their holdings, as of the end of the prior quarter.

This form, called a 13F filing, shows what the world's biggest money managers bought in the last quarter... what they sold... and what they're holding on to.

Because it can be filed within 45 days of a quarter's end, it's not a perfect snapshot of what these hedge funds are doing. But it's the closest thing regular investors have to a window into where the sharpest, most influential...