In an action brought on Thursday in a New York state court,
Greenlight said a frequent Seeking Alpha commenter, writing under
the pseudonym "Valuable Insights", revealed Einhorn's position last
November, which drove up chipmaker Micron's share price.
"Because this was the very time frame in which Greenlight was in the
process of building its Micron position, it was forced to pay higher
prices for its Micron securities," the court filing said.
A spokesman for Greenlight Capital declined to comment on Friday,
and a representative for Seeking Alpha could not immediately be
Greenlight returned 19.5 percent last year. According to the court
filing, Greenlight sent a confidentiality letter disclosing the
Micron position to the SEC shortly after the Seeking Alpha comments.
"Prior to the Internet postings, the only persons to whom Greenlight
disclosed its position in Micron were persons subject to a
contractual, fiduciary, or other duty to maintain the
confidentiality of that information: Greenlight's employees, legal
counsel, prime and executing brokers, fund administrator, and other
agents," the filing said.
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Greenlight eventually reported a stake of about 23.02 million shares
in Micron later in November.
The case in the Supreme Court of the State of New York, County of
New York, is In the Matter of the Application of Greenlight Capital
(Reporting by Dan Levine in San
Francisco; editing by Ken Wills)
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