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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
24Q1 调仓
2023-12-31 → 2024-03-31 · 共 150 项
建仓 25
增持 84
减持 16
清仓 25
方向
标的
Δ市值
现股数(环比)
减持
AEHR
Aehr Test Systems
-$16.9M
967,852
-11%
建仓
—
SharkNinja, Inc.
+$14.7M
235,200
清仓
—
Perion Network, Ltd.
-$14.1M
0
-100%
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
ONTO
Onto Innovation, Inc.
+$12.5M
106,930
+140%
增持
SIMO
Silicon Motion Techn ADR
+$12.0M
217,400
+185%
建仓
CCS
Century Communities, Inc.
+$11.7M
121,200
建仓
ITRI
Itron Inc
+$11.6M
125,600
建仓
SLAB
Silicon Laboratories, Inc.
+$11.2M
78,000
增持
SKYW
Skywest Inc
+$11.1M
262,360
+96%
建仓
—
Azek Co., Inc.
+$11.1M
220,900
增持
CROX
Crocs, Inc.
+$9.0M
95,400
+91%
建仓
CBT
Cabot Corp.
+$8.5M
92,100
减持
ACLS
Axcelis Technologies
-$8.5M
209,339
-15%
增持
NXT
Nextracker, Inc.
+$8.4M
235,700
+128%
清仓
BELFB
Bel Fuse, Inc.
-$8.3M
0
-100%
清仓
POWI
Power Integrations
-$8.1M
0
-100%
建仓
IBP
Installed Building Products, I
+$7.9M
30,400
减持
VRT
Vertiv Holdings Co.
+$7.5M
229,650
-2%
增持
—
LivaNova Plc
+$7.5M
202,500
+173%
增持
ESAB
ESAB Corporation
+$7.4M
129,200
+63%
增持
EHC
Encompass Health Corporation
+$7.2M
204,136
+41%
增持
ACIW
ACI Worldwide Inc.
+$7.0M
344,562
+139%
建仓
—
Credo Technology Group
+$6.8M
321,900
增持
AVAV
Aerovironment, Inc.
+$6.8M
101,570
+46%
增持
CLH
Clean Harbors, Inc.
+$6.4M
81,295
+42%
建仓
KRYS
Krystal Biotech, Inc.
+$6.4M
35,700
清仓
MGPI
MGP Ingredients, Inc.
-$6.3M
0
-100%
增持
—
International Seaways, Inc.
+$6.3M
198,700
+110%
增持
UCTT
Ultra Clean Holdings
+$6.2M
319,600
+29%
清仓
—
Thermon Group Hldgs Inc.
-$6.2M
0
-100%
增持
ADMA
ADMA Biologics, Inc.
+$6.2M
2,790,700
+3%
增持
OSK
Oshkosh Corp.
+$6.0M
133,827
+35%
增持
PSN
Parsons Corp.
+$5.9M
172,140
+29%
增持
ICFI
ICF International, Inc.
+$5.7M
96,900
+47%
增持
—
Informatica Corp.
+$5.6M
309,000
+70%
清仓
VC
Visteon Corp.
-$5.5M
0
-100%
减持
AAOI
Applied Optoelectronics Inc.
-$5.5M
849,615
-5%
清仓
—
Super Micro Computer Inc.
-$5.4M
0
-100%
增持
NEO
NeoGenomics, Inc.
+$5.2M
737,200
+88%
减持
ATEC
Alphatec Hldgs Inc.
-$5.2M
1,385,880
-14%
增持
ACMR
ACM Research, Inc. Class A
+$5.2M
441,130
+12%
清仓
CVSA
Adtalem Global Education Inc.
-$5.1M
0
-100%
清仓
—
Rover Group, Inc.
-$5.1M
0
-100%
建仓
RSI
Rush Street Interactive, Inc.
+$5.1M
776,700
增持
ACHC
Acadia Healthcare Co., Inc.
+$5.0M
151,650
+68%
增持
RAMP
Liveramp Hldgs, Inc.
+$4.9M
295,780
+113%
清仓
—
Carrols Restaurant Group, Inc.
-$4.9M
0
-100%
增持
GO
Grocery Outlet Hldg Corp.
+$4.8M
296,000
+113%
清仓
VVX
V2X, Inc.
-$4.7M
0
-100%
增持
ZETA
Zeta Global Holdings Corp.
+$4.7M
1,181,980
+26%
增持
ELF
e.l.f. Beauty, Inc.
+$4.5M
43,720
+53%
清仓
FSLY
Fastly, Inc.
-$4.4M
0
-100%
建仓
—
Cellebrite DI Ltd.
+$4.4M
397,900
建仓
OSCR
Oscar Health, Inc.
+$4.4M
295,000
增持
AMSC
American Superconductor
+$4.4M
634,400
+69%
增持
YOU
Clear Secure, Inc.
+$4.4M
500,500
+65%
增持
ITGR
Integer Holdings Corporation
+$4.2M
96,700
+36%
建仓
EXLS
Exlservice Holdings
+$4.2M
133,200
建仓
THRM
Gentherm, Inc.
+$4.2M
73,500
建仓
SFM
Sprouts Farmers Markets LLC
+$4.2M
64,700
建仓
DUOL
Duolingo, Inc.
+$4.2M
18,900
增持
FORM
Formfactor Inc.
+$4.2M
236,700
+49%
增持
EVH
Evolent Health, Inc.
+$4.0M
338,940
+58%
减持
NVTS
Navitas Semiconductor Corp.
-$3.9M
807,400
-16%
清仓
OPCH
Option Care Health Inc.
-$3.8M
0
-100%
建仓
IMAX
Imax Corp.
+$3.8M
236,200
增持
MSA
MSA Safety Inc
+$3.8M
44,200
+57%
增持
BLBD
Blue Bird Corporation
+$3.7M
299,100
+4%
增持
MMSI
Merit Medical System Inc
+$3.7M
156,490
+46%
建仓
BLZE
Backblaze, Inc.
+$3.7M
357,800
增持
FCFS
FirstCash Holdings, Inc
+$3.7M
91,700
+24%
增持
JBI
Janus International Group, Inc
+$3.6M
695,400
+32%
清仓
HALO
Halozyme Therapeutics, Inc.
-$3.6M
0
-100%
增持
WWD
Woodward, Inc.
+$3.5M
68,400
+32%
建仓
ARLO
Arlo Technologies, Inc.
+$3.5M
273,400
清仓
QLYS
Qualys, Inc.
-$3.5M
0
-100%
增持
AVNW
Aviat Networks, Inc.
+$3.4M
199,307
+54%
清仓
CDRE
Cadre Hldgs, Inc.
-$3.4M
0
-100%
增持
OSIS
Osi Systems, Inc.
+$3.3M
55,300
+57%
增持
AIZ
Assurant, Inc.
+$3.3M
45,000
+47%
增持
FSS
Federal Signal Corp.
+$3.3M
127,830
+29%
增持
WING
Wingstop, Inc.
+$3.2M
20,000
+26%
增持
HAE
Haemonetics Corp.
+$3.2M
143,695
+36%
增持
VCYT
Veracyte, Inc.
-$3.2M
671,700
+2%
增持
RXST
RxSight, Inc.
+$3.2M
126,640
+52%
清仓
MGRC
McGrath RentCorp
-$3.1M
0
-100%
减持
BJRI
BJ's Restaurants, Inc.
-$3.1M
63,600
-57%
清仓
HFWA
Heritage Financial Corporation
-$3.0M
0
-100%
减持
—
Constellium NV Cl A
+$2.9M
1,803,271
-3%
增持
STRL
Sterling Construction Co., Inc
+$2.9M
96,600
+10%
增持
—
Camtek, Ltd.
+$2.8M
178,180
+2%
建仓
—
Aris Water Solutions, Inc.
+$2.8M
195,200
清仓
CAL
Caleres Inc.
-$2.7M
0
-100%
减持
HNI
HNI Corp.
-$2.7M
83,400
-46%
增持
AMPH
Amphastar Pharmaceuticals, Inc
-$2.7M
417,865
+23%
增持
TREX
Trex Company, Inc.
+$2.7M
60,100
+50%
清仓
PLUS
EPlus, Inc.
-$2.7M
0
-100%
增持
FIX
Comfort Systems USA Inc.
+$2.7M
19,800
+12%
增持
ATI
ATI, Inc.
+$2.6M
141,900
+38%
建仓
MTRX
Matrix Service Co.
+$2.6M
198,500
增持
KWR
Quaker Chemical Corporation
+$2.6M
40,500
+50%
增持
MTDR
Matador Resources Company
+$2.5M
82,400
+56%
建仓
SG
Sweetgreen, Inc.
+$2.5M
97,851
清仓
ATRC
Atricure, Inc.
-$2.5M
0
-100%
增持
MMS
Maximus, Inc.
+$2.5M
89,700
+49%
清仓
—
Hibbett, Inc.
-$2.5M
0
-100%
增持
FLS
Flowserve Corporation
+$2.4M
274,378
+12%
增持
MCRI
Monarch Casino & Resort, Inc.
+$2.4M
86,200
+47%
增持
LBRT
Liberty Energy, Inc.
+$2.4M
236,300
+72%
增持
LOPE
Grand Canyon Education, Inc.
+$2.3M
43,200
+61%
建仓
AXGN
AxoGen Inc.
+$2.3M
286,400
建仓
—
Couchbase, Inc.
+$2.3M
87,800
增持
LMB
Limbach Hldgs, Inc.
+$2.3M
164,800
+66%
增持
MGY
Magnolia Oil & Gas Corp.
+$2.3M
184,600
+58%
清仓
MIRM
Mirum Pharmaceuticals, Inc.
-$2.3M
0
-100%
增持
—
Primo Water Corp.
+$2.3M
323,500
+34%
清仓
PDFS
Pdf Solutions, Inc.
-$2.2M
0
-100%
建仓
LQDA
Liquidia Corp.
+$2.2M
150,000
减持
—
Fabrinet
-$2.2M
21,900
-34%
减持
—
Weatherford International PLC
+$2.1M
222,100
-7%
减持
TMDX
TransMedics Group, Inc.
-$2.1M
198,200
-7%
增持
—
OneSpaWorld Holdings Limited
+$2.1M
420,400
+69%
增持
EZPW
EZCorp, Inc.
+$2.0M
685,500
+5%
增持
VECO
Veeco Instruments, Inc.
+$2.0M
269,100
+12%
增持
CECO
CECO Environmental Corp.
+$2.0M
463,400
+9%
减持
PDD
PDD Holdings Inc. ADR
-$2.0M
14,500
-42%
增持
CRS
Carpenter Technology Corp.
+$1.9M
61,800
+73%
增持
RPD
Rapid7, Inc.
+$1.9M
94,500
+96%
增持
LNWO
Light & Wonder Inc.
+$1.9M
42,600
+42%
减持
ALGM
Allegro MicroSystems, Inc.
-$1.8M
221,280
-14%
减持
MHO
M/I Homes, Inc.
-$1.8M
36,200
-26%
增持
SSD
Simpson Manufacturing
+$1.8M
24,800
+48%
增持
EOLS
Evolus, Inc.
+$1.7M
397,300
+7%
增持
BLKB
Blackbaud
+$1.6M
57,300
+90%
增持
LRN
Stride, Inc.
+$1.6M
66,000
+55%
增持
HQY
HealthEquity Inc.
+$1.6M
51,300
+33%
增持
LMAT
LeMaitre Vascular, Inc.
+$1.6M
80,001
+23%
增持
AAON
AAON, Inc.
+$1.6M
48,400
+33%
增持
SKWD
Skyward Specialty Ins Group
+$1.6M
115,700
+41%
增持
DY
Dycom Industries, Inc.
+$1.5M
29,000
+26%
增持
CPRX
Catalyst Pharmaceuticals, Inc.
+$1.4M
458,400
+31%
增持
FRME
First Merchants Corporation
+$1.4M
123,400
+56%
增持
AORT
Artivion, Inc
+$1.4M
282,400
+9%
增持
COCO
The Vita Coco Co., Inc.
+$1.3M
165,400
+55%
增持
—
Playa Hotels & Resorts N.V.
+$1.2M
751,500
+7%
增持
BOOT
Boot Barn Hldgs, Inc.
+$1.2M
54,400
+5%
增持
—
Vital Energy, Inc.
+$1.2M
109,400
+10%
清仓
FLL
Full House Resorts, Inc.
-$1.2M
0
-100%
减持
ANF
Abercrombie & Fitch Co.
+$1.2M
48,100
-13%
增持
CLW
Clearwater Paper Corp
+$1.2M
112,200
+8%
