OBERWEIS ASSET MANAGEMENT INC/

13F Portfolio Filings

Latest 13F report
Q2 2024 - Aug 14, 2024
Value $
$1.63B
Signature - Title
Thomas P. Joyce - Chief Compliance Officer
Location
3333 Warrenville Road, Suite 500, Lisle, IL
Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Date Filed
Q2 2024 195 $1.63B +$378M -$202M +$175M WFRD, CSTM, SN, ONTO, TMDX 13F-HR 8/14/2024, 12:16 PM
Q1 2024 194 $1.38B +$403M -$159M +$243M CSTM, WFRD, ACLS, ONTO, ATEC 13F-HR 5/15/2024, 11:12 AM
Q4 2023 190 $1.07B +$281M -$226M +$54.7M CSTM, ACLS, AEHR, ATEC, WFRD 13F-HR 2/14/2024, 04:01 PM
Q3 2023 191 $941M +$276M -$117M +$159M CSTM, AEHR, ACLS, WFRD, ATEC 13F-HR 11/14/2023, 10:25 AM
Q2 2023 182 $823M +$239M -$98M +$141M CSTM, ACLS, AEHR, ATEC, PI 13F-HR 8/14/2023, 11:25 AM
Q1 2023 169 $645M +$160M -$56.5M +$103M CSTM, ACLS, AEHR, PI, PERI 13F-HR 5/15/2023, 10:45 AM
Q4 2022 163 $470M +$130M -$136M -$5.67M CSTM, ACLS, AEHR, PI, CROX 13F-HR 2/14/2023, 11:44 AM
Q3 2022 168 $427M +$78.7M -$32.5M +$46.2M CSTM, NVMI, DAVA, ACLS, LNTH 13F-HR 11/14/2022, 10:47 AM
Q2 2022 159 $395M +$34.7M -$39.9M -$5.24M CSTM, NVMI, DAVA, LNTH, ACLS 13F-HR 8/15/2022, 12:09 PM
Q1 2022 160 $499M +$76.9M -$59.3M +$17.6M CSTM, NVMI, DAVA, ACLS, LNTH 13F-HR 5/16/2022, 11:25 AM
Q4 2021 155 $548M +$138M -$107M +$31.5M CSTM, NVMI, DAVA, SYNA, ACLS 13F-HR 2/14/2022, 10:25 AM
Q3 2021 157 $483M +$61.9M -$50.5M +$11.5M CSTM, DAVA, SE, SYNA, ECOM 13F-HR 11/15/2021, 11:34 AM
Q2 2021 158 $456M +$73.5M -$167M -$94M CSTM, DAVA, SE, ECOM, ORGO 13F-HR 8/16/2021, 12:23 PM
Q1 2021 165 $489M +$140M -$70.5M +$69.5M CSTM, FVRR, KRNT, DAVA, SE 13F-HR 5/17/2021, 01:09 PM
Q4 2020 133 $380M +$44.4M -$74M -$29.6M CSTM, FVRR, DAVA, UPWK, CSTL 13F-HR 2/16/2021, 07:21 AM
Q3 2020 121 $297M +$52.1M -$71.1M -$19M FVRR, CSTM, DAVA, AUDC, CSTL 13F-HR 11/16/2020, 10:32 AM
Q2 2020 118 $255M +$106M -$84M +$22.2M FVRR, CSTM, DAVA, AUDC, BABA 13F-HR 8/14/2020, 11:29 AM
Q1 2020 167 $181M +$45.4M -$119M -$73.9M AUDC, DAVA, EHTH, BABA, IPHI 13F-HR 5/15/2020, 10:45 AM
Q4 2019 196 $300M +$106M -$279M -$172M CSTM, AUDC, NOMD, BABA, EHTH 13F-HR 2/14/2020, 10:29 AM
Q3 2019 192 $443M +$95.2M -$131M -$35.8M NOMD, CSTM, GWPH, ARGX, TNDM 13F-HR 11/14/2019, 11:32 AM
Q2 2019 192 $550M +$143M -$114M +$28.9M GWPH, NOMD, ARGX, QURE, TNDM 13F-HR 8/14/2019, 11:14 AM
Q1 2019 197 $498M +$145M -$159M -$14.3M NOMD, ARGX, MLNX, GWPH, GOOS 13F-HR 5/15/2019, 12:32 PM
Q4 2018 196 $447M +$147M -$129M +$17.2M NOMD, GOOS, ARGX, ATTU, SODA 13F-HR 2/14/2019, 11:22 AM
Q3 2018 205 $516M +$210M -$114M +$95.8M SODA, NOMD, SKY, BEAT, CUROQ 13F-HR 11/14/2018, 11:48 AM
Q2 2018 216 $398M +$96.5M -$109M -$12.9M BURL, LGND, LHCG, CARB, LOGM 13F-HR 8/14/2018, 11:47 AM
Q1 2018 223 $381M +$73.3M -$120M -$46.9M LOGM, EXTR, BURL, LHCG, PLCE 13F-HR 5/15/2018, 12:06 PM
Q4 2017 230 $428M +$118M -$68.2M +$49.9M PLCE, ROG, LOGM, BURL, OSUR 13F-HR 2/14/2018, 10:45 AM
Q3 2017 165 $359M +$106M -$131M -$24.9M ROG, TAL, LOGM, OSUR, PLCE 13F-HR 11/13/2017, 02:47 PM
Q2 2017 138 $364M +$115M -$101M +$14.6M TRVG, AAOI, CEVA, LOGM, GKOS 13F-HR 8/14/2017, 12:26 PM
Q1 2017 138 $339M +$84.4M -$128M -$43.2M WIX, IPHI, TAL, LOGM, GKOS 13F-HR 5/15/2017, 10:36 AM
Q4 2016 134 $335M +$46M -$52.8M -$6.83M SHOP, COT, IPHI, LOGM, GIMO 13F-HR 2/14/2017, 01:39 PM
Q3 2016 134 $347M +$73.1M -$92M -$19M COT, SHOP, GIMO, IPHI, LOGM 13F-HR 11/14/2016, 02:56 PM
Q2 2016 169 $336M +$69.6M -$97.1M -$27.4M COT, GIMO, DXCM, LGND, IPHI 13F-HR 8/15/2016, 09:57 AM
Q1 2016 174 $346M +$88.8M -$92.4M -$3.58M COT, ICLR, CBPO, DXCM, LGND 13F-HR 5/16/2016, 10:04 AM
Q4 2015 174 $356M +$85.2M -$81.2M +$4M ICLR, COT, CBPO, DPLO, THRM 13F-HR 2/16/2016, 12:05 PM
Q3 2015 164 $343M +$61.9M -$68.9M -$6.97M ICLR, COT, KANG, THRM, BOFI 13F-HR 11/13/2015, 02:58 PM
Q2 2015 165 $378M +$68.4M -$71.8M -$3.33M ICLR, COT, THRM, DPLO, T100PS 13F-HR 8/14/2015, 11:16 AM
Q1 2015 168 $356M +$87M -$105M -$17.8M ICLR, COT, VIPS, THRM, DPLO 13F-HR 5/15/2015, 11:48 AM
Q4 2014 126 $335M +$56.7M -$64.6M -$7.99M ICLR, VIPS, SYNA, T100PS, THRM 13F-HR 2/13/2015, 02:36 PM
Q3 2014 132 $365M +$75.9M -$88.1M -$12.2M ICLR, T100PS, VIPS, SYNA, THRM 13F-HR 11/14/2014, 10:08 AM
Q2 2014 137 $406M +$90.8M -$156M -$64.9M VIPS, SYNA, VNET, THRM, SALE 13F-HR 8/14/2014, 12:54 PM
Q1 2014 149 $476M +$167M -$123M +$43.7M NQ, ICLR, GIII, VNET, T100PS 13F-HR 5/15/2014, 02:20 PM
Q4 2013 147 $413M $0 $0 NQ, VNET, MEI, MDSO, GIII 13F-HR 2/14/2014, 11:30 AM