The long-awaited trial of billionaire hedge fund manager Raj Rajaratnam on charges of insider trading begins later in New York.

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US insider trading trial begins

If new S.E.C. charges are true, insider trading may be rampant.

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Editorial: From the Top

A former Goldman Sachs board member is charged with insider trading by the US Securities and Exchange Commission.

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Ex-Goldman Sachs director charged

A former Goldman Sachs board member is charged with insider trading by the US Securities and Exchange Commission.

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Ex-Goldman Sachs director charged

The closure of the case after two years of inquiry follows last October’s settlement by Angelo Mozilo, former head of Countrywide Financial, of insider trading allegations.

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Case on Mortage Official Is Said to Be Dropped

Investors have asked to pull $1 billion from Diamondback Capital Management, which was raided by authorities in an insider trading investigation but has not been charged with wrongdoing.

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DealBook: Diamondback Hit With $1 Billion in Redemptions

After federal officials starting investigating charges of insider trading, four hedge-fund employees apparently worried they might be next. They were right. U.S. attorneys in Manhattan announced charges against the four, who are accused of insider…

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Feds Charge Four With Insider Trading

Prosecutors say an expert network firm paid more than $400,000 to tech company employees who provided confidential information.

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DealBook: 4 Arrested in Insider-Trading Case

As federal investigations into illegal stock deals continue, the FBI arrested four people from top tech companies in connection with insider trading on Thursday. The arrestees: James Fleishman, an executive for Primary Global Research; Mark Anthony…

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Four Arrested for Insider Trading

Investors say none of the individual bits of scuttlebutt they pick up constitute material insider information.

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DealBook: Tidbits, or Material Facts for Insider Trading?

The two-year-old wiretaps first used in the Galleon Group case are expected to be used to investigate other suspected cases of insider trading.

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DealBook: Wiretaps Said to Widen Insider Inquiry

Don Chu, an executive from expert networking firm Primary Global Research, is accused of passing along information on technology company earnings to a figure in the Galleon insider trading case.

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DealBook: Arrest in Insider Trading Inquiry

Two large mutual funds, Wellington Management and Janus Capital Group, have also received subpoena requests seeking a wide range of information.

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DealBook: SAC Gets Subpoena in Insider Inquiry

Two of the funds under investigation, Level Global Investors and Diamondback Capital, are both run by alumni of the giant hedge fund SAC Capital.

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DealBook: Agents Raid 3 Hedge Funds’ Offices

The FBI widens its investigation of insider trading beyond hedge fund Galleon, with raids on three more fund managers.

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FBI widens insider trading probe