Loan T. le Duy, Director at NATIONAL INSTRUMENTS CORP /DE/ (NATI), bought 3,500 shares at $27.57 ($96K) on 2014-05-13, disclosed to the SEC on 2014-05-13.
Seasonal purchase ($96k) by Director — this insider has traded NATI in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
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