Raj Rajaratnam, the hedge-fund tycoon and Galleon Group LLC co-founder at the center of a U.S. insider-trading crackdown, was found guilty of all 14 counts against him in the largest illegal stock-tipping case in a generation.

A jury of eight women and four men in Manhattan returned its verdict today after hearing evidence that Rajaratnam, 53, engaged in a seven-year conspiracy to trade on inside information from corporate executives, bankers, consultants, traders and directors of public companies including Goldman Sachs Group Inc. (GS) He gained $63.8 million, prosecutors said.

The trial came as Manhattan U.S. Attorney Preet Bharara promised to crack down on “rampant” illegal trading on Wall Street. Rajaratnam was convicted on five counts of conspiracy and nine counts of securities fraud. Prosecutors today said he faces 15 1/2 years to 19 1/2 years in prison at his July 29 sentencing.

“Rajaratnam, once a high-flying billionaire and hedge fund manager, is now a convicted felon, 14 times over,” Bharara said in a statement after the verdict. “Rajaratnam was among the best and the brightest -- one of the most educated, successful and privileged professionals in the country. Yet, like so many others recently, he let greed and corruption cause his undoing.”