Case focuses on whether the tipster gained something of value in return for disclosures
Insider trading probe has largely unravelled over the past year
Settlement of claims that he failed to supervise employee convicted of insider trading
Appeal court ruling forces prosecutors to drop action against Steinberg
Court rejection could affect future prosecutions and past guilty pleas
Future prosecutions hinge on outcome of US Attorney’s challenge to appeals court decision
Burden of proof increases after convictions overturned
Appeals court ruling means prosecutors face higher hurdles pursuing future cases
Former top aide to Steven Cohen faints ahead of guilty verdict
Insider trial hears fund manager asked for tips
Step-by-step of the trail that led investigators to the hedge fund door
An increase in arrests reflects a big rise in tip-offs, and greater industry-wide scrutiny
International Edition