ESSEX INVESTMENT MANAGEMENT CO LLC

Related Filers (111)

Other (102)

13F-HR
Thursday, 11/9/2023
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 8/14/2023
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 5/4/2023
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/3/2023
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 11/14/2022
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 8/12/2022
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 5/9/2022
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 2/10/2022
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 11/9/2021
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 8/12/2021
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/12/2021
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/12/2021
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 11/12/2020
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 8/4/2020
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 5/4/2020
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 2/10/2020
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 10/22/2019
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 8/15/2019
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/15/2019
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR/A
Thursday, 2/7/2019
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 2/6/2019
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 10/16/2018
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 7/17/2018
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 4/26/2018
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 2/5/2018
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 10/30/2017
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 7/28/2017
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 4/27/2017
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 2/8/2017
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 11/1/2016
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 7/27/2016
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 5/9/2016
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 1/26/2016
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 11/4/2015
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 7/28/2015
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/6/2015
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 1/27/2015
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 10/29/2014
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 7/23/2014
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 4/28/2014
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 1/28/2014
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 10/25/2013
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 8/14/2013
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 4/26/2013
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 2/5/2013
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 11/15/2012
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 8/15/2012
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR/A
Wednesday, 5/16/2012
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 5/15/2012
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 2/1/2012
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 10/25/2011
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 8/10/2011
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 4/27/2011
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 1/28/2011
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 10/27/2010
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 7/29/2010
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 4/26/2010
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 1/25/2010
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 10/27/2009
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 7/29/2009
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 4/27/2009
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/13/2009
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 11/14/2008
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 8/14/2008
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 5/15/2008
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 2/14/2008
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 11/9/2007
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 8/8/2007
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 5/8/2007
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/9/2007
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 11/14/2006
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 8/14/2006
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 5/16/2006
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/10/2006
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 11/16/2005
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 8/16/2005
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/11/2005
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 2/17/2005
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 10/18/2004
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 7/23/2004
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Thursday, 4/8/2004
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 1/16/2004
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 10/31/2003
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 7/16/2003
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 4/4/2003
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 1/14/2003
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 10/15/2002
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 7/8/2002
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR/A
Thursday, 5/30/2002
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/15/2002
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 2/13/2002
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 11/16/2001
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 8/14/2001
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 5/9/2001
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 2/9/2001
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 11/14/2000
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Monday, 8/14/2000
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Friday, 6/2/2000
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Wednesday, 2/16/2000
Initial Quarterly Form 13F Holdings Report filed by institutional managers
13F-HR
Tuesday, 11/9/1999
Initial Quarterly Form 13F Holdings Report filed by institutional managers
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Ownership (286)

SC 13G
Friday, 6/8/2012
Crumbs Bake Shop, Inc.: Major Shareholders
SC 13G
Wednesday, 1/11/2012
Crumbs Bake Shop, Inc.: Major Shareholders
SC 13G
Wednesday, 8/10/2011
57th Street General Acquisition Corp: Major Shareholders
SC 13G
Monday, 1/25/2010
BioScrip, Inc.: Major Shareholders
SC 13G
Monday, 1/25/2010
TRANSCEND SERVICES INC: Major Shareholders
SC 13G
Monday, 1/25/2010
AMTECH SYSTEMS INC: Major Shareholders
SC 13G
Monday, 1/25/2010
LECROY CORP: Major Shareholders
SC 13G
Monday, 1/25/2010
GSE SYSTEMS INC: Major Shareholders
SC 13G
Friday, 2/13/2009
CHINDEX INTERNATIONAL INC: Major Shareholders
SC 13G
Friday, 2/13/2009
BioScrip, Inc.: Major Shareholders
SC 13G
Friday, 2/13/2009
BIOLASE TECHNOLOGY INC: Major Shareholders
SC 13G
Friday, 2/13/2009
Wonder Auto Technology, Inc: Major Shareholders
SC 13G
Friday, 2/13/2009
AMTECH SYSTEMS INC: Major Shareholders
SC 13G
Friday, 2/13/2009
TRANSCEND SERVICES INC: Major Shareholders
SC 13G
Friday, 2/13/2009
LECROY CORP: Major Shareholders
SC 13G
Thursday, 1/31/2008
LECROY CORP: Major Shareholders
SC 13G
Thursday, 1/31/2008
AMTECH SYSTEMS INC: Major Shareholders
SC 13G
Thursday, 1/31/2008
TRANSCEND SERVICES INC: Major Shareholders
SC 13G
Tuesday, 2/6/2007
INTERACTIVE INTELLIGENCE INC: Major Shareholders
SC 13G/A
Monday, 4/24/2006
CYNOSURE INC: Major Shareholders
SC 13G
Thursday, 2/9/2006
NOVATEL INC: Major Shareholders
SC 13G
Thursday, 2/9/2006
MARCHEX INC: Major Shareholders
SC 13G
Thursday, 2/9/2006
CYNOSURE INC: Major Shareholders
SC 13G
Thursday, 2/9/2006
MWI Veterinary Supply, Inc.: Major Shareholders
SC 13G
Wednesday, 5/11/2005
JUPITERMEDIA CORP: Major Shareholders
SC 13G
Wednesday, 5/11/2005
JUPITERMEDIA CORP: Major Shareholders
SC 13G
Wednesday, 5/11/2005
MARCHEX INC: Major Shareholders
SC 13G
Wednesday, 5/11/2005
MARCHEX INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
MPSI SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
MPSI SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
CAPTIVA SOFTWARE CORP: Major Shareholders
SC 13G
Tuesday, 4/19/2005
HARRIS & HARRIS GROUP INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
COLDWATER CREEK INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
COLDWATER CREEK INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
CITADEL SECURITY SOFTWARE INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
MICROS SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 4/19/2005
MICROS SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 4/5/2005
HARRIS & HARRIS GROUP INC: Major Shareholders
SC 13G
Monday, 2/14/2005
BARCLAYS GLOBAL INVESTORS NA /CA/: Major Shareholders
SC 13G
Monday, 4/12/2004
MCDATA CORP: Major Shareholders
SC 13G
Monday, 4/12/2004
DOT HILL SYSTEMS CORP: Major Shareholders
SC 13G
Monday, 4/12/2004
MCDATA CORP: Major Shareholders
SC 13G
Monday, 4/12/2004
DOT HILL SYSTEMS CORP: Major Shareholders
SC 13G
Monday, 4/12/2004
DOT HILL SYSTEMS CORP: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MARTEK BIOSCIENCES CORP: Major Shareholders
SC 13G/A
Friday, 2/20/2004
QUEST SOFTWARE INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MAGMA DESIGN AUTOMATION INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
DOT HILL SYSTEMS CORP: Major Shareholders
SC 13G/A
Friday, 2/20/2004
COLDWATER CREEK INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MCDATA CORP: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MARTEN TRANSPORT LTD: Major Shareholders
SC 13G/A
Friday, 2/20/2004
CACHE INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
INTRADO INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MICROMUSE INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MICROSTRATEGY INC: Major Shareholders
SC 13G/A
Friday, 2/20/2004
MERIX CORP: Major Shareholders
SC 13G
Monday, 2/2/2004
INTRADO INC: Major Shareholders
SC 13G
Monday, 2/2/2004
CACHE INC: Major Shareholders
SC 13G
Monday, 2/2/2004
MARTEK BIOSCIENCES CORP: Major Shareholders
SC 13G
Monday, 2/2/2004
DOT HILL SYSTEMS CORP: Major Shareholders
SC 13G
Monday, 2/2/2004
MICROMUSE INC: Major Shareholders
SC 13G
Monday, 2/2/2004
COLDWATER CREEK INC: Major Shareholders
SC 13G
Monday, 2/2/2004
MAGMA DESIGN AUTOMATION INC: Major Shareholders
SC 13G
Monday, 2/2/2004
MCDATA CORP: Major Shareholders
SC 13G
Monday, 2/2/2004
QUEST SOFTWARE INC: Major Shareholders
SC 13G
Monday, 2/2/2004
MERIX CORP: Major Shareholders
SC 13G
Monday, 2/2/2004
MICROSTRATEGY INC: Major Shareholders
SC 13G
Monday, 2/2/2004
MARTEN TRANSPORT LTD: Major Shareholders
SC 13G
Tuesday, 1/14/2003
MARTEK BIOSCIENCES CORP: Major Shareholders
SC 13G
Tuesday, 1/14/2003
OSI SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 1/14/2003
MCDATA CORP: Major Shareholders
SC 13G
Monday, 12/9/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Thursday, 11/7/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Tuesday, 10/15/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Thursday, 9/5/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Friday, 8/16/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Friday, 8/16/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Friday, 8/16/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Thursday, 8/15/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Wednesday, 4/10/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Friday, 3/8/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Friday, 3/8/2002
AMERICAN SCIENCE & ENGINEERING INC: Major Shareholders
SC 13G
Monday, 2/11/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Monday, 2/11/2002
AMERICAN SCIENCE & ENGINEERING INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
WEBSENSE INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
VIISAGE TECHNOLOGY INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
OSI SYSTEMS INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
CALIFORNIA PIZZA KITCHEN INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
AMERICAN SCIENCE & ENGINEERING INC: Major Shareholders
SC 13G
Thursday, 1/10/2002
SPECIALTY LABORATORIES: Major Shareholders
SC 13G
Thursday, 1/10/2002
MERIDIAN MEDICAL TECHNOLOGIES INC: Major Shareholders
SC 13G
Wednesday, 11/14/2001
MED-DESIGN CORP: Major Shareholders
SC 13G
Wednesday, 2/14/2001
SUNRISE ASSISTED LIVING INC: Major Shareholders
SC 13G
Wednesday, 2/14/2001
PECO II INC: Major Shareholders
SC 13G
Wednesday, 2/14/2001
CEPHEID: Major Shareholders
SC 13G
Wednesday, 2/14/2001
PACKARD BIOSCIENCE CO: Major Shareholders
SC 13G
Tuesday, 7/11/2000
OSCA INC: Major Shareholders
SC 13G
Wednesday, 5/10/2000
ESPEED INC: Major Shareholders
SC 13G/A
Wednesday, 5/10/2000
ALLAIRE CORP: Major Shareholders
SC 13G
Monday, 4/10/2000
ESPEED INC: Major Shareholders
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