Notify me when OBERWEIS ASSET MANAGEMENT INC/ files a new 13F portfolio report.
⭐ Subscribe ⭐| Quarter | Holdings | Value $ | Bought | Sold | Net | Top Holdings | Form Type | Filing Time |
|---|---|---|---|---|---|---|---|---|
| Q4 2025 | 178 | $2,734,878,641 | +$396,022,805 | -$378,137,455 | +$17,885,350 | LITE, CRDO, AAOI, SN, AMBA | 13F-HR | 17 Feb 2026, 13:07 |
| Q3 2025 | 182 | $2,611,720,449 | +$346,030,978 | -$287,910,882 | +$58,120,096 | CRDO, LITE, RMBS, AMBA, SN | 13F-HR | 17 Nov 2025, 06:09 |
| Q2 2025 | 184 | $2,298,544,510 | +$373,630,187 | -$386,570,896 | -$12,940,709 | CRDO, ADMA, AAOI, SN, EHC | 13F-HR | 14 Aug 2025, 14:29 |
| Q1 2025 | 191 | $2,006,310,493 | +$354,093,347 | -$296,827,466 | +$57,265,881 | ADMA, CRDO, SN, EHC, DOCS | 13F-HR | 15 May 2025, 11:28 |
| Q4 2024 | 195 | $2,121,356,727 | +$510,091,114 | -$366,840,278 | +$143,250,836 | CRDO, ADMA, SN, ZETA, SKYW | 13F-HR | 14 Feb 2025, 11:20 |
| Q3 2024 | 205 | $1,951,706,141 | +$464,742,153 | -$246,750,076 | +$217,992,077 | ADMA, SN, ZETA, EHC, WFRD | 13F-HR | 14 Nov 2024, 11:34 |
| Q2 2024 | 195 | $1,631,299,855 | +$377,641,280 | -$202,339,131 | +$175,302,149 | WFRD, CSTM, SN, ONTO, TMDX | 13F-HR | 14 Aug 2024, 12:16 |
| Q1 2024 | 194 | $1,382,671,873 | +$402,694,969 | -$159,226,302 | +$243,468,667 | CSTM, WFRD, ACLS, ONTO, ATEC | 13F-HR | 15 May 2024, 11:12 |
| Q4 2023 | 190 | $1,073,586,890 | +$280,822,212 | -$226,090,000 | +$54,732,212 | CSTM, ACLS, AEHR, ATEC, WFRD | 13F-HR | 14 Feb 2024, 16:01 |
| Q3 2023 | 191 | $941,461,591 | +$275,716,486 | -$116,908,176 | +$158,808,310 | CSTM, AEHR, ACLS, WFRD, ATEC | 13F-HR | 14 Nov 2023, 10:25 |
| Q2 2023 | 182 | $822,841,024 | +$239,237,677 | -$97,952,362 | +$141,285,315 | CSTM, ACLS, AEHR, ATEC, PI | 13F-HR | 14 Aug 2023, 11:25 |
| Q1 2023 | 169 | $644,539,440 | +$159,540,526 | -$56,487,522 | +$103,053,004 | CSTM, ACLS, AEHR, PI, PERI | 13F-HR | 15 May 2023, 10:45 |
| Q4 2022 | 163 | $470,439,140 | +$130,358,073 | -$136,026,827 | -$5,668,754 | CSTM, ACLS, AEHR, PI, CROX | 13F-HR | 14 Feb 2023, 11:44 |
| Q3 2022 | 168 | $427,271,000 | +$78,703,396 | -$32,535,965 | +$46,167,431 | CSTM, NVMI, DAVA, ACLS, LNTH | 13F-HR | 14 Nov 2022, 10:47 |
| Q2 2022 | 159 | $395,125,000 | +$34,699,052 | -$39,941,177 | -$5,242,125 | CSTM, NVMI, DAVA, LNTH, ACLS | 13F-HR | 15 Aug 2022, 12:09 |
| Q1 2022 | 160 | $499,158,000 | +$76,915,717 | -$59,340,807 | +$17,574,910 | CSTM, NVMI, DAVA, ACLS, LNTH | 13F-HR | 16 May 2022, 11:25 |
| Q4 2021 | 155 | $548,098,000 | +$138,370,044 | -$106,913,274 | +$31,456,770 | CSTM, NVMI, DAVA, SYNA, ACLS | 13F-HR | 14 Feb 2022, 10:25 |
| Q3 2021 | 157 | $482,907,000 | +$61,921,424 | -$50,454,014 | +$11,467,410 | CSTM, DAVA, SE, SYNA, ECOM | 13F-HR | 15 Nov 2021, 11:34 |
| Q2 2021 | 158 | $456,492,000 | +$73,451,890 | -$167,403,111 | -$93,951,221 | CSTM, DAVA, SE, ECOM, ORGO | 13F-HR | 16 Aug 2021, 12:23 |
| Q1 2021 | 165 | $488,893,000 | +$139,972,890 | -$70,504,217 | +$69,468,673 | CSTM, FVRR, KRNT, DAVA, SE | 13F-HR | 17 May 2021, 13:09 |
| Q4 2020 | 133 | $379,790,000 | +$44,389,085 | -$74,027,412 | -$29,638,327 | CSTM, FVRR, DAVA, UPWK, CSTL | 13F-HR | 16 Feb 2021, 07:21 |
| Q3 2020 | 121 | $297,038,000 | +$52,112,712 | -$71,130,944 | -$19,018,232 | FVRR, CSTM, DAVA, AUDC, CSTL | 13F-HR | 16 Nov 2020, 10:32 |
| Q2 2020 | 118 | $254,665,000 | +$106,244,332 | -$84,002,316 | +$22,242,016 | FVRR, CSTM, DAVA, AUDC, BABA | 13F-HR | 14 Aug 2020, 11:29 |
| Q1 2020 | 167 | $181,117,000 | +$45,353,039 | -$119,249,738 | -$73,896,699 | AUDC, DAVA, EHTH, BABA, IPHI | 13F-HR | 15 May 2020, 10:45 |
| Q4 2019 | 196 | $300,164,000 | +$106,439,258 | -$278,642,375 | -$172,203,117 | CSTM, AUDC, NOMD, BABA, EHTH | 13F-HR | 14 Feb 2020, 10:29 |
| Q3 2019 | 192 | $442,518,000 | +$95,186,884 | -$130,955,826 | -$35,768,942 | NOMD, CSTM, GWPH, ARGX, TNDM | 13F-HR | 14 Nov 2019, 11:32 |
| Q2 2019 | 192 | $550,433,000 | +$142,523,304 | -$113,671,006 | +$28,852,298 | GWPH, NOMD, ARGX, QURE, TNDM | 13F-HR | 14 Aug 2019, 11:14 |
| Q1 2019 | 197 | $498,029,000 | +$144,502,299 | -$158,832,823 | -$14,330,524 | NOMD, ARGX, MLNX, GWPH, GOOS | 13F-HR | 15 May 2019, 12:32 |
| Q4 2018 | 196 | $447,102,000 | +$146,672,831 | -$129,450,499 | +$17,222,332 | NOMD, GOOS, ARGX, ATTU, SODA | 13F-HR | 14 Feb 2019, 11:22 |
| Q3 2018 | 205 | $515,963,000 | +$210,224,062 | -$114,424,475 | +$95,799,587 | SODA, NOMD, SKY, BEAT, CUROQ | 13F-HR | 14 Nov 2018, 11:48 |
| Q2 2018 | 216 | $397,887,000 | +$96,466,524 | -$109,361,625 | -$12,895,101 | BURL, LGND, LHCG, CARB, LOGM | 13F-HR | 14 Aug 2018, 11:47 |
| Q1 2018 | 223 | $381,001,000 | +$73,346,845 | -$120,203,200 | -$46,856,355 | LOGM, EXTR, BURL, LHCG, PLCE | 13F-HR | 15 May 2018, 12:06 |
| Q4 2017 | 230 | $427,542,000 | +$118,084,791 | -$68,204,584 | +$49,880,207 | PLCE, ROG, LOGM, BURL, OSUR | 13F-HR | 14 Feb 2018, 10:45 |
| Q3 2017 | 165 | $359,323,000 | +$106,408,877 | -$131,347,275 | -$24,938,398 | ROG, TAL, LOGM, OSUR, PLCE | 13F-HR | 13 Nov 2017, 14:47 |
| Q2 2017 | 138 | $364,376,000 | +$115,410,865 | -$100,779,738 | +$14,631,127 | TRVG, AAOI, CEVA, LOGM, GKOS | 13F-HR | 14 Aug 2017, 12:26 |
| Q1 2017 | 138 | $339,338,000 | +$84,419,488 | -$127,653,136 | -$43,233,648 | WIX, IPHI, TAL, LOGM, GKOS | 13F-HR | 15 May 2017, 10:36 |
| Q4 2016 | 134 | $334,652,000 | +$45,996,869 | -$52,826,806 | -$6,829,937 | SHOP, COT, IPHI, LOGM, GIMO | 13F-HR | 14 Feb 2017, 13:39 |
| Q3 2016 | 134 | $347,369,000 | +$73,073,960 | -$92,027,347 | -$18,953,387 | COT, SHOP, GIMO, IPHI, LOGM | 13F-HR | 14 Nov 2016, 14:56 |
| Q2 2016 | 169 | $336,450,000 | +$69,617,700 | -$97,060,485 | -$27,442,785 | COT, GIMO, DXCM, LGND, IPHI | 13F-HR | 15 Aug 2016, 09:57 |
| Q1 2016 | 174 | $346,211,000 | +$88,797,224 | -$92,377,049 | -$3,579,825 | COT, ICLR, CBPO, DXCM, LGND | 13F-HR | 16 May 2016, 10:04 |
| Q4 2015 | 174 | $356,495,000 | +$85,156,835 | -$81,159,196 | +$3,997,639 | ICLR, COT, CBPO, DPLO, THRM | 13F-HR | 16 Feb 2016, 12:05 |
| Q3 2015 | 164 | $343,218,000 | +$61,939,295 | -$68,908,490 | -$6,969,195 | ICLR, COT, KANG, THRM, BOFI | 13F-HR | 13 Nov 2015, 14:58 |
| Q2 2015 | 165 | $377,952,000 | +$68,439,177 | -$71,768,752 | -$3,329,575 | ICLR, COT, THRM, DPLO, T100PS | 13F-HR | 14 Aug 2015, 11:16 |
| Q1 2015 | 168 | $355,988,000 | +$86,967,105 | -$104,736,409 | -$17,769,304 | ICLR, COT, VIPS, THRM, DPLO | 13F-HR | 15 May 2015, 11:48 |
| Q4 2014 | 126 | $334,880,000 | +$56,662,031 | -$64,648,149 | -$7,986,118 | ICLR, VIPS, SYNA, T100PS, THRM | 13F-HR | 13 Feb 2015, 14:36 |
| Q3 2014 | 132 | $365,066,000 | +$75,896,681 | -$88,094,117 | -$12,197,436 | ICLR, T100PS, VIPS, SYNA, THRM | 13F-HR | 14 Nov 2014, 10:08 |
| Q2 2014 | 137 | $405,567,000 | +$90,845,905 | -$155,697,648 | -$64,851,743 | VIPS, SYNA, VNET, THRM, SALE | 13F-HR | 14 Aug 2014, 12:54 |
| Q1 2014 | 149 | $476,248,000 | +$167,086,253 | -$123,415,335 | +$43,670,918 | NQ, ICLR, GIII, VNET, T100PS | 13F-HR | 15 May 2014, 14:20 |
| Q4 2013 | 147 | $412,923,000 | $0 | $0 | $0 | NQ, VNET, MEI, MDSO, GIII | 13F-HR | 14 Feb 2014, 11:30 |