In a motion filed late Thursday, prosecutors asked that he be precluded from testifying. Contrary to Professor Jarrells suggestion, the mosaic theory is not a defense to insider trading; at best, it is an academic theory about what constitutes nonpublic, material information, Assistant U.S. Attorney Jonathan Streeter said in a court filing.
Read more: Prosecutors Seek To Block Rajaratnams Expert Testimony — WSJ Law Blog