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OBERWEIS ASSET MANAGEMENT INC/ 13F 持仓明细(2026-03-31) · 小隐寺数据中心
OBERWEIS ASSET MANAGEMENT INC/
报告期 2026-03-31 · CIK 0000937886
持仓数
180
前50大市值合计
$2.09B
报告期
2026-03-31
当前持仓
调仓
组合演变
前 6 大持仓 + 其他 逐季市值($B) · 点图或下方季度看该季调仓
看某季调仓:
26Q1
25Q4
25Q3
25Q2
25Q1
24Q4
24Q3
24Q2
24Q1
23Q4
23Q3
23Q2
23Q1
22Q4
22Q3
22Q2
22Q1
21Q4
21Q3
22Q4 调仓
2022-09-30 → 2022-12-31 · 共 150 项
建仓 25
增持 90
减持 7
清仓 28
方向
标的
Δ市值
现股数(环比)
清仓
—
Nova Measuring Instruments
-$44.1M
0
-100%
清仓
DAVA
Endava Plc Ads
-$29.8M
0
-100%
增持
PI
Impinj, Inc.
+$9.2M
110,665
+210%
调仓由相邻两季 13F 持仓相减推导(非逐笔成交);方向按股数增减,Δ市值受股价波动影响、符号可与方向相反;13F 申报滞后最长 45 天。
增持
ACLS
Axcelis Technologies
+$6.9M
279,549
+10%
清仓
MTRN
Materion Corp.
-$6.8M
0
-100%
增持
—
Super Micro Computer Inc.
+$6.8M
121,240
+111%
减持
LNTH
Lantheus Hldgs Inc.
-$5.2M
164,940
-15%
建仓
TMDX
TransMedics Group, Inc.
+$5.1M
82,400
增持
AEHR
Aehr Test Systems
+$5.0M
607,608
+20%
增持
CROX
Crocs, Inc.
+$4.5M
104,050
+5%
清仓
—
Angiodynamics, Inc.
-$4.2M
0
-100%
建仓
CIEN
Ciena Corporation
+$4.1M
80,385
清仓
DDOG
Datadog, Inc. Class A
-$3.9M
0
-100%
增持
HALO
Halozyme Therapeutics, Inc.
+$3.6M
143,390
+23%
清仓
FNKO
Funko, Inc.
-$3.5M
0
-100%
建仓
ALGM
Allegro MicroSystems, Inc.
+$3.5M
115,200
增持
—
Perion Network, Ltd.
+$3.0M
247,400
+48%
增持
CLH
Clean Harbors, Inc.
+$3.0M
48,335
+113%
增持
CLFD
Clearfield, Inc.
+$2.7M
94,540
+60%
减持
—
Constellium NV Cl A
+$2.6M
4,939,312
-10%
增持
—
Fabrinet
+$2.5M
28,515
+130%
建仓
OSPN
OneSpan, Inc.
+$2.4M
216,900
建仓
TCMD
Tactile Sys Technology, Inc.
+$2.3M
204,200
减持
DECK
Deckers Outdoor Corp.
+$2.3M
27,120
-0%
增持
ATEC
Alphatec Hldgs Inc.
+$2.3M
503,290
+11%
建仓
PFBC
Preferred Bank
+$2.3M
30,200
建仓
CHEF
The Chefs Warehouse, Inc.
+$2.2M
66,900
建仓
VCYT
Veracyte, Inc.
+$2.2M
92,400
清仓
—
Resources Connection, Inc.
-$2.2M
0
-100%
清仓
FORR
Forrester Research, Inc.
-$2.1M
0
-100%
增持
BDC
Belden, Inc.
+$2.1M
91,769
+22%
建仓
ADMA
ADMA Biologics, Inc.
+$2.1M
536,900
减持
SYNA
Synaptics, Inc.
-$1.8M
36,410
-32%
建仓
CPRX
Catalyst Pharmaceuticals, Inc.
+$1.8M
96,600
清仓
CTS
CTS Corp.
-$1.7M
0
-100%
建仓
—
Brookline Bancorp, Inc.
+$1.7M
121,700
建仓
HFWA
Heritage Financial Corporation
+$1.7M
55,400
建仓
NRDS
NerdWallet, Inc.
+$1.7M
175,900
增持
MMSI
Merit Medical System Inc
+$1.6M
35,600
+121%
建仓
HAE
Haemonetics Corp.
+$1.5M
19,700
增持
—
Veritiv Corp.
+$1.5M
62,142
+1%
清仓
—
Alpha & Omega Semiconductor
-$1.5M
0
-100%
清仓
LRN
Stride, Inc.
-$1.5M
0
-100%
增持
CALX
Calix, Inc.
+$1.5M
37,900
+106%
清仓
AXTI
AXT Inc
-$1.5M
0
-100%
增持
VC
Visteon Corp.
+$1.5M
22,400
+61%
建仓
WAFD
Washington Federal, Inc.
+$1.4M
43,200
建仓
TME
Tencent Music Entertainment
+$1.4M
175,000
清仓
SKY
Skyline Champion Corporation
-$1.4M
0
-100%
建仓
—
Nine Energy Service, Inc.
+$1.4M
99,100
增持
TWI
Titan Int'l Inc.
+$1.4M
225,200
+34%
增持
MXL
Maxlinear, Inc. Class A
+$1.4M
113,460
+50%
建仓
—
MRC Global, Inc.
+$1.4M
119,900
清仓
HCKT
Hackett Group, Inc.
-$1.4M
0
-100%
增持
MTSI
Macom Technology Solutions
+$1.4M
38,400
+88%
清仓
TDC
Teradata Corp
-$1.4M
0
-100%
清仓
MOV
Movado Group, Inc.
-$1.3M
0
-100%
增持
CBT
Cabot Corp.
+$1.3M
44,747
+70%
增持
MGPI
MGP Ingredients, Inc.
+$1.3M
33,501
+57%
清仓
TRIP
TripAdvisor, Inc.
-$1.3M
0
-100%
建仓
JBI
Janus International Group, Inc
+$1.2M
130,300
减持
BOOT
Boot Barn Hldgs, Inc.
-$1.2M
27,900
-45%
增持
—
Applied Industrial
+$1.2M
16,600
+95%
增持
—
Inmode Ltd.
+$1.2M
93,950
+27%
清仓
—
Perficient Inc.
-$1.2M
0
-100%
清仓
BLDR
Builders Firstsource
-$1.2M
0
-100%
增持
—
Dada Nexus Limited
+$1.1M
457,672
+6%
增持
BELFB
Bel Fuse, Inc.
+$1.1M
114,800
+10%
增持
MTDR
Matador Resources Company
+$1.1M
30,300
+142%
增持
RES
RPC, Inc.
+$1.1M
292,900
+35%
增持
ICFI
ICF International, Inc.
+$1.1M
43,400
+47%
增持
—
SP Plus Corporation
+$1.1M
67,600
+66%
增持
FOXF
Fox Factory Hldg Corp.
+$1.1M
21,100
+95%
增持
AMRC
Ameresco, Inc.
+$1.1M
86,208
+49%
增持
CRK
Comstock Res
+$1.1M
142,800
+176%
清仓
RDNT
Radnet, Inc.
-$1.1M
0
-100%
增持
—
Model N, Inc.
+$1.0M
145,340
+3%
建仓
FRME
First Merchants Corporation
+$1.0M
25,300
增持
IPAR
Inter Parfums
+$1.0M
22,100
+51%
清仓
FFWM
First Foundation Inc.
-$1.0M
0
-100%
增持
NOV
NOV, Inc.
+$1.0M
80,800
+98%
增持
—
H&E Equipment Services, Inc.
+$1.0M
50,100
+12%
增持
FELE
Franklin Electric
+$1.0M
26,600
+94%
清仓
—
Smart Global Hldgs, Inc.
-$1.0M
0
-100%
清仓
CEVA
Ceva Inc.
-$994.0K
0
-100%
增持
STRL
Sterling Construction Co., Inc
+$983.7K
80,600
+4%
增持
—
SeaWorld Entertainment Inc.
+$977.8K
57,200
+25%
增持
FSS
Federal Signal Corp.
+$974.4K
57,100
+27%
建仓
MNSO
MINISO Group Holding Limited
+$965.7K
90,000
增持
EXTR
Extreme Networks, Inc.
+$931.3K
150,100
+8%
增持
ATI
ATI, Inc.
+$910.0K
57,200
+91%
增持
AMPH
Amphastar Pharmaceuticals, Inc
+$902.7K
134,000
+32%
建仓
KVHI
KVH Industries, Inc.
+$899.4K
88,000
增持
ABM
ABM Industries, Inc.
+$894.7K
44,500
+57%
增持
MCRI
Monarch Casino & Resort, Inc.
+$894.5K
20,100
+73%
增持
KWR
Quaker Chemical Corporation
+$882.0K
11,600
+59%
增持
—
Univar Solutions, Inc.
+$873.7K
54,300
+45%
减持
YUMC
Yum China Hldgs, Inc.
-$870.2K
10,500
-66%
建仓
PDFS
Pdf Solutions, Inc.
+$858.5K
30,100
增持
VVX
V2X, Inc.
+$857.6K
50,100
+46%
增持
DXLG
Destination XL Group, Inc.
+$838.2K
338,100
+27%
增持
OI
O-I Glass, Inc.
+$819.3K
103,400
+50%
清仓
III
Information Svcs Group, Inc.
-$817.0K
0
-100%
增持
—
PDC Energy, Inc.
+$816.5K
37,705
+38%
增持
MGY
Magnolia Oil & Gas Corp.
+$816.5K
67,100
+76%
增持
OPCH
Option Care Health Inc.
+$815.9K
65,500
+78%
建仓
FUTU
Futu Holdings Ltd.
+$813.0K
20,000
增持
PTEN
Patterson-Uti Energy, Inc.
+$784.4K
139,100
+4%
增持
EIG
Employers Holdings, Inc.
+$746.5K
38,500
+45%
增持
CECO
CECO Environmental Corp.
+$735.9K
182,100
+16%
增持
—
Everi Hldgs, Inc.
+$730.9K
224,800
+46%
增持
—
NV5 Global, Inc
+$719.4K
11,800
+74%
增持
ATEN
A10 Networks, Inc.
+$716.9K
131,200
+19%
增持
SLAB
Silicon Laboratories, Inc.
+$710.6K
11,650
+65%
增持
NSP
Insperity, Inc.
+$709.3K
13,700
+65%
增持
MOD
Modine Mfg Co Com
+$705.9K
86,500
+11%
增持
LBRT
Liberty Energy, Inc.
+$698.4K
84,100
+65%
清仓
ARLO
Arlo Technologies, Inc.
-$679.0K
0
-100%
增持
CALY
Topgolf Callaway Brands Corp.
+$673.0K
83,800
+64%
增持
AMN
AMN Healthcare Svcs
+$672.9K
15,200
+81%
建仓
TAL
Tal Education Group ADR
+$669.8K
95,000
清仓
BANC
Banc of California, Inc.
-$640.0K
0
-100%
清仓
—
Techtarget, Inc.
-$628.0K
0
-100%
增持
STKL
SunOpta, Inc.
+$623.3K
262,600
+50%
减持
—
Guess, Inc
-$591.6K
88,080
-46%
增持
—
Playa Hotels & Resorts N.V.
+$586.2K
284,100
+30%
增持
UNM
UNUM Group
+$572.9K
29,000
+82%
增持
FCFS
FirstCash Holdings, Inc
+$572.7K
17,900
+34%
增持
INSP
Inspire Medical Systems, Inc.
+$570.7K
3,850
+71%
增持
EZPW
EZCorp, Inc.
+$551.3K
262,000
+27%
增持
—
Earthstone Energy Inc.
+$543.8K
128,800
+23%
增持
ACHC
Acadia Healthcare Co., Inc.
+$538.8K
58,780
+7%
增持
—
EnPro Industries, Inc.
+$525.7K
19,300
+4%
增持
ALNT
Allied Motion Technologies
+$525.2K
46,400
+22%
增持
AVNW
Aviat Networks, Inc.
+$511.3K
83,307
+9%
增持
—
Avid Technology, Inc.
+$511.0K
52,200
+38%
增持
TITN
Titan Machinery, Inc.
+$499.3K
39,600
+4%
增持
FC
Franklin Covey Co.
+$495.5K
46,300
+26%
增持
SCSC
Scansource, Inc.
+$472.5K
46,800
+38%
增持
CLW
Clearwater Paper Corp
+$471.5K
41,800
+42%
增持
—
Forward Air Corp.
+$467.9K
9,800
+58%
增持
VPG
Vishay Precision Group
+$448.1K
43,600
+4%
增持
—
Dynavax Technologies Corp.
+$446.6K
183,700
+27%
增持
FLL
Full House Resorts, Inc.
+$426.5K
221,743
+0%
增持
TXRH
Texas Roadhouse
+$410.0K
9,500
+83%
增持
MBWM
Mercantile Bank Corp.
+$404.0K
49,819
+17%
增持
—
Haynes Intl, Inc.
+$399.6K
33,500
+4%
清仓
—
Flushing Financial Corp.
-$385.0K
0
-100%
增持
EVH
Evolent Health, Inc.
+$376.7K
139,340
+42%
增持
MUSA
Murphy USA, Inc.
+$370.7K
2,900
+81%
