Form SC 13G/A EXFO INC. Filed by: RENAISSANCE TECHNOLOGIES LLC Feb 13, 2020 06:06AM
Form SC 13G/A EXFO INC. Filed by: RENAISSANCE TECHNOLOGIES LLC Feb 13, 2019 09:49AM
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Form SC 13G/A EXFO INC. Filed by: RENAISSANCE TECHNOLOGIES LLC Feb 14, 2017 10:19AM
Form SC 13G EXFO INC. Filed by: RENAISSANCE TECHNOLOGIES LLC Feb 12, 2016 08:39AM