He is a nester, who tends toward savings and does better at balancing the extremes of greed and fear.

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"We take seriously even the suggestion that any SEC employee would engage in insider trading, " SEC spokesman John Nester said late Thursday.

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Nester said the SEC has taken additional steps to enhance protections against "the potential for improper conduct, " including developing a new computer system to facilitate reporting and review of securities trading by all SEC personnel, hiring a chief compliance officer and providing greater clarity of rules governing the reporting of trades.

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