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ESSEX INVESTMENT MANAGEMENT CO LLC
- As of  05/18/24, 09:09:06 PM:   67 Insider Transactions.

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Buy/Sell* 1 Yr Return** Filed Date Subject Symbol Pct Owned Details
B 2012-06-08 16:48:17.0 Crumbs Bake Shop CRMB 10.8% view
B 221.13% 2010-01-25 16:31:51.0 GSE SYSTEMS INC LCRY 6.76% view
B -10.76% 2010-01-25 16:10:24.0 AMTECH SYSTEMS INC TRCR 7.42% view
B 4.84% 2010-01-25 16:05:09.0 TRANSCEND SERVICES INC TRCR 6.16% view
B -74.70% 2008-01-31 10:05:02.0 LECROY CORP LCRY 5.92% view
S 2007-02-06 08:37:34.0 CYNOSURE INC CYNO 9.13% view
B 29.97% 2006-02-09 00:00:00.0 MWI Veterinary Supply MWIV 5.63% view
B 32.88% 2006-02-09 00:00:00.0 MARCHEX INC MCHX 7.045% view
B 0.63% 2005-05-11 00:00:00.0 JUPITERMEDIA CORP JUPM 5.42% view
B 22.72% 2005-04-19 00:00:00.0 CITADEL SECURITY SOFTWARE INC MCRS 5.78% view
B 61.88% 2005-04-19 00:00:00.0 COLDWATER CREEK INC CWTR 6.38% view
B 2005-04-19 00:00:00.0 CAPTIVA SOFTWARE CORP CPTV 9.98% view
S 2004-04-12 00:00:00.0 MCDATA CORP MCDT 8.49% view
S 2004-02-20 00:00:00.0 MARTEK BIOSCIENCES CORP MATK 8.02% view
S 2004-02-20 00:00:00.0 MARTEN TRANSPORT LTD MRTN 8.83% view
S 2004-02-20 00:00:00.0 MICROSTRATEGY INC MSTR 5.34% view
S 2004-02-20 00:00:00.0 MERIX CORP MCDT 11.17% view
S 2004-02-20 00:00:00.0 COLDWATER CREEK INC LAVA 5.91% view
B -37.21% 2004-02-20 00:00:00.0 QUEST SOFTWARE INC CACH 5.51% view
S 2004-02-02 00:00:00.0 MARTEK BIOSCIENCES CORP MUSE 6.27% view
B 2004-02-02 00:00:00.0 MARTEN TRANSPORT LTD TRDO 6.42% view
B -65.23% 2004-02-02 00:00:00.0 MICROSTRATEGY INC MERX 7.14% view
B 84.14% 2004-02-02 00:00:00.0 MCDATA CORP CWTR 5.61% view
B -16.66% 2004-02-02 00:00:00.0 MAGMA DESIGN AUTOMATION INC QSFT 6.03% view
S 2003-01-14 00:00:00.0 MARTEK BIOSCIENCES CORP OSIS 9.02% view
S 2003-01-14 00:00:00.0 MCDATA CORP MCDT 11.28% view
S 2002-11-07 00:00:00.0 OSI SYSTEMS INC OSIS 14.2% view
S 2002-09-05 00:00:00.0 OSI SYSTEMS INC OSIS 13.54% view
B -0.97% 2002-08-16 00:00:00.0 OSI SYSTEMS INC OSIS 14.11% view
B -37.05% 2002-08-15 00:00:00.0 OSI SYSTEMS INC OSIS 13.97% view
S 2002-03-08 00:00:00.0 OSI SYSTEMS INC OSIS 13.41% view
B -15.99% 2002-02-11 00:00:00.0 OSI SYSTEMS INC OSIS 13.55% view
B 4.64% 2002-01-10 00:00:00.0 CALIFORNIA PIZZA KITCHEN INC CPKI 5.65% view
B 2002-01-10 00:00:00.0 AMERICAN SCIENCE & ENGINEERING INC ASE 14.57% view
B -1.15% 2002-01-10 00:00:00.0 OSI SYSTEMS INC OSIS 13.2% view
B -68.89% 2001-02-14 00:00:00.0 SUNRISE ASSISTED LIVING INC SRZ 5.94% view
S 2001-02-14 00:00:00.0 CEPHEID ESPD 11.17% view
B -52.92% 2000-04-10 00:00:00.0 ESPEED INC ESPD 14.35% view
B 2000-02-02 00:00:00.0 MIPS TECHNOLOGIES INC ZTEL 5.52% view
S 2000-02-02 00:00:00.0 NETOPIA INC NTPA 7.55% view
S 2000-02-02 00:00:00.0 DIGITAL INSIGHT CORP DGIN 10.32% view
B -55.84% 2000-01-10 00:00:00.0 NET2PHONE INC NTOP 10.81% view
B 1999-12-15 00:00:00.0 RAVISENT TECHNOLOGIES INC XEDA 17.74% view
S 1999-11-09 00:00:00.0 RAVISENT TECHNOLOGIES INC XEDA 10.11% view
S 1999-10-08 00:00:00.0 NET2PHONE INC NTOP 11.35% view
S 1999-09-10 00:00:00.0 NET2PHONE INC NTOP 11.35% view
B 1999-01-08 00:00:00.0 ADVANCE PARADIGM INC ADVP 8.61% view
B -33.50% 1999-01-08 00:00:00.0 MICROMUSE INC MUSE 7.73% view
B 1999-01-08 00:00:00.0 BRIGHT HORIZONS FAMILY SOLUTIONS INC BFAM 10.21% view
S 1998-12-11 00:00:00.0 BRIGHT HORIZONS FAMILY SOLUTIONS INC BFAM 11.26% view
B -24.44% 1998-10-08 00:00:00.0 BRIGHT HORIZONS FAMILY SOLUTIONS INC BFAM 12.8% view
S 1998-08-10 00:00:00.0 RIT TECHNOLOGIES LTD RITT 3.73% view
B 82.09% 1998-08-10 00:00:00.0 BRIGHT HORIZONS FAMILY SOLUTIONS INC RITT 11.72% view
B -88.51% 1998-06-09 00:00:00.0 RIT TECHNOLOGIES LTD RITT 12.27% view
B -82.34% 1998-01-29 00:00:00.0 RIT TECHNOLOGIES LTD RITT 7.98% view
B -62.87% 1998-01-29 00:00:00.0 RADIANT SYSTEMS INC RADS 5.93% view
S 1998-01-29 00:00:00.0 OMTOOL LTD OMTL 5.87% view
S 1998-01-29 00:00:00.0 NATURAL MICROSYSTEMS CORP NMSS 6.77% view
S 1998-01-29 00:00:00.0 COMPUTER TASK GROUP INC CTG 10.18% view
S 1997-08-13 00:00:00.0 I STAT CORPORATION NCI 10.2% view
B 1997-07-10 00:00:00.0 METZLER GROUP INC NCI 5.92% view
B -66.48% 1997-03-10 00:00:00.0 HARMONIC LIGHTWAVES INC CYMI 6.16% view
B 28.41% 1997-01-10 00:00:00.0 COMPUTER HORIZONS CORP HLIT 12.19% view
B -56.10% 1997-01-10 00:00:00.0 VERITY INC STXN 5.84% view
B 48.20% 1997-01-10 00:00:00.0 MAGAININ PHARMACEUTICALS INC CTXS 57.0% view
B 1997-01-10 00:00:00.0 PREMIERE TECHNOLOGIES INC SERO 5.53% view
B -35.02% 1997-01-10 00:00:00.0 HARMONIC LIGHTWAVES INC HLIT 13.31% view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.
** Since most institutions are long investors, only returns for long transactions are shown here.