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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
23Q1 调仓
2022-12-31 → 2023-03-31 · 共 150 项
建仓 23
增持 103
减持 7
清仓 17
方向
标的
Δ市值
现股数(环比)
减持
ACLS
Axcelis Technologies
+$14.1M
271,989
-3%
减持
—
Constellium NV Cl A
+$11.1M
4,553,786
-8%
清仓
—
Super Micro Computer Inc.
-$10.0M
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
AEHR
Aehr Test Systems
+$9.5M
699,108
+15%
增持
—
Perion Network, Ltd.
+$9.1M
387,170
+56%
清仓
CLFD
Clearfield, Inc.
-$8.9M
0
-100%
增持
PI
Impinj, Inc.
+$7.7M
146,275
+32%
增持
LNTH
Lantheus Hldgs Inc.
+$6.3M
178,540
+8%
建仓
—
Axonics, Inc.
+$5.2M
95,740
清仓
AMRC
Ameresco, Inc.
-$4.9M
0
-100%
增持
ATEC
Alphatec Hldgs Inc.
+$4.4M
678,530
+35%
增持
OSPN
OneSpan, Inc.
+$3.9M
361,300
+67%
建仓
TMCI
Treace Medical Concepts, Inc.
+$3.9M
154,300
清仓
TWI
Titan Int'l Inc.
-$3.5M
0
-100%
建仓
—
Alteryx, Inc. Com Cl A
+$3.3M
56,350
增持
VC
Visteon Corp.
+$3.2M
39,400
+76%
建仓
FORM
Formfactor Inc.
+$3.2M
101,500
建仓
MMS
Maximus, Inc.
+$3.2M
40,800
增持
TMDX
TransMedics Group, Inc.
+$3.1M
108,300
+31%
建仓
SITM
SiTime Corporation
+$3.1M
21,800
建仓
ALSN
Allison Transmission Holdings,
+$3.0M
66,400
增持
AMPH
Amphastar Pharmaceuticals, Inc
+$2.9M
178,200
+33%
增持
ICFI
ICF International, Inc.
+$2.7M
63,400
+46%
建仓
BLBD
Blue Bird Corporation
+$2.6M
127,300
增持
VCYT
Veracyte, Inc.
+$2.5M
212,180
+130%
建仓
ACMR
ACM Research, Inc. Class A
+$2.5M
215,600
建仓
LYTS
LSI Industries Inc.
+$2.5M
180,700
增持
ALGM
Allegro MicroSystems, Inc.
+$2.5M
123,500
+7%
建仓
HXL
Hexcel Corporation
+$2.4M
34,600
减持
ACHC
Acadia Healthcare Co., Inc.
-$2.3M
34,800
-41%
建仓
ZETA
Zeta Global Holdings Corp.
+$2.3M
213,300
建仓
KTB
Kontoor Brands, Inc.
+$2.2M
46,300
建仓
—
Alight, Inc.
+$2.2M
241,756
建仓
—
New Relic, Inc.
+$2.2M
29,300
增持
UCTT
Ultra Clean Holdings
+$2.1M
132,700
+95%
建仓
—
International Seaways, Inc.
+$2.1M
51,400
增持
RES
RPC, Inc.
+$2.1M
614,785
+110%
增持
CIEN
Ciena Corporation
+$2.1M
118,305
+47%
清仓
—
EnPro Industries, Inc.
-$2.1M
0
-100%
清仓
CCRN
Cross Country Healthcare, Inc.
-$2.1M
0
-100%
增持
SLAB
Silicon Laboratories, Inc.
+$2.1M
20,810
+79%
增持
CROX
Crocs, Inc.
+$2.0M
105,350
+1%
增持
—
Camtek, Ltd.
+$2.0M
117,680
+99%
增持
NRDS
NerdWallet, Inc.
+$2.0M
229,700
+31%
建仓
GVA
Granite Construction
+$2.0M
47,500
增持
—
Everi Hldgs, Inc.
+$1.9M
301,300
+34%
清仓
FOXF
Fox Factory Hldg Corp.
-$1.9M
0
-100%
增持
TCMD
Tactile Sys Technology, Inc.
+$1.9M
259,550
+27%
增持
HALO
Halozyme Therapeutics, Inc.
-$1.9M
164,040
+14%
增持
—
SeaWorld Entertainment Inc.
+$1.9M
80,800
+41%
增持
DECK
Deckers Outdoor Corp.
+$1.9M
28,280
+4%
增持
—
Playa Hotels & Resorts N.V.
+$1.8M
383,200
+35%
建仓
TWOU
2U, Inc.
+$1.8M
264,300
增持
ADMA
ADMA Biologics, Inc.
+$1.8M
1,169,500
+118%
建仓
AMLX
Amylyx Pharmaceuticals, Inc.
+$1.8M
60,305
建仓
—
Weatherford International PLC
+$1.7M
29,300
增持
CLH
Clean Harbors, Inc.
+$1.7M
50,835
+5%
增持
CBT
Cabot Corp.
+$1.6M
60,351
+35%
清仓
AMN
AMN Healthcare Svcs
-$1.6M
0
-100%
清仓
—
NV5 Global, Inc
-$1.6M
0
-100%
增持
—
Veritiv Corp.
+$1.6M
67,490
+9%
增持
EVH
Evolent Health, Inc.
+$1.5M
167,710
+20%
增持
HAE
Haemonetics Corp.
+$1.5M
36,900
+87%
增持
BDC
Belden, Inc.
+$1.4M
92,672
+1%
增持
BOOT
Boot Barn Hldgs, Inc.
+$1.4M
41,200
+48%
增持
IPAR
Inter Parfums
+$1.3M
24,400
+10%
增持
CALY
Topgolf Callaway Brands Corp.
+$1.3M
138,300
+65%
增持
CHEF
The Chefs Warehouse, Inc.
+$1.3M
103,600
+55%
增持
MNSO
MINISO Group Holding Limited
+$1.3M
126,800
+41%
增持
ATI
ATI, Inc.
+$1.2M
72,900
+27%
清仓
UFPI
UFP Industries, Inc.
-$1.2M
0
-100%
增持
ATEN
A10 Networks, Inc.
+$1.1M
213,700
+63%
增持
FELE
Franklin Electric
+$1.1M
34,500
+30%
增持
OPCH
Option Care Health Inc.
+$1.1M
97,400
+49%
增持
—
Fabrinet
+$1.1M
40,145
+41%
增持
EXTR
Extreme Networks, Inc.
+$1.1M
201,000
+34%
增持
MXL
Maxlinear, Inc. Class A
+$1.1M
140,460
+24%
增持
MCRI
Monarch Casino & Resort, Inc.
+$1.1M
35,400
+76%
增持
STRL
Sterling Construction Co., Inc
+$1.1M
97,900
+21%
增持
EZPW
EZCorp, Inc.
+$1.1M
371,500
+42%
清仓
CERS
Cerus Corp.
-$1.0M
0
-100%
清仓
—
Forward Air Corp.
-$1.0M
0
-100%
增持
STKL
SunOpta, Inc.
+$1.0M
420,800
+60%
增持
VVX
V2X, Inc.
+$1.0M
77,800
+55%
增持
—
Haynes Intl, Inc.
+$1.0M
50,900
+52%
增持
OI
O-I Glass, Inc.
+$1.0M
120,000
+16%
增持
SYNA
Synaptics, Inc.
+$1.0M
40,260
+11%
增持
—
Model N, Inc.
-$1.0M
146,240
+1%
减持
PRSU
Viad Corp.
-$998.6K
11,886
-77%
增持
CECO
CECO Environmental Corp.
+$987.2K
222,600
+22%
增持
OXM
Oxford Inds, Inc.
+$966.9K
24,600
+41%
增持
PDFS
Pdf Solutions, Inc.
+$964.7K
43,000
+43%
减持
PDD
Pinduoduo Inc.
-$956.8K
25,000
-29%
增持
HLIT
Harmonic, Inc.
+$917.6K
152,500
+53%
增持
KWR
Quaker Chemical Corporation
+$914.4K
14,400
+24%
增持
SCSC
Scansource, Inc.
+$851.6K
72,900
+56%
增持
JBI
Janus International Group, Inc
+$849.9K
212,000
+63%
增持
PLAB
Photronics, Inc.
+$841.3K
169,300
+45%
清仓
OOMA
OOMA Inc.
-$830.8K
0
-100%
增持
UNM
UNUM Group
+$827.7K
51,000
+76%
增持
IMXI
International Money Express, I
+$819.1K
91,800
+45%
清仓
FUTU
Futu Holdings Ltd.
-$813.0K
0
-100%
增持
BELFB
Bel Fuse, Inc.
+$786.8K
121,500
+6%
增持
—
Inmode Ltd.
+$768.8K
129,000
+37%
增持
NSP
Insperity, Inc.
+$765.3K
19,100
+39%
建仓
BEKE
KE Holdings, Inc.
+$753.6K
40,000
增持
EIG
Employers Holdings, Inc.
+$753.3K
57,900
+50%
增持
MMSI
Merit Medical System Inc
+$724.9K
43,800
+23%
增持
MTSI
Macom Technology Solutions
+$705.6K
44,100
+15%
增持
—
Avid Technology, Inc.
+$690.7K
65,000
+25%
增持
CALX
Calix, Inc.
+$680.9K
61,100
+61%
清仓
TAL
Tal Education Group ADR
-$669.8K
0
-100%
增持
—
Earthstone Energy Inc.
+$663.8K
191,900
+49%
增持
AVNW
Aviat Networks, Inc.
+$658.4K
94,507
+13%
增持
CPRX
Catalyst Pharmaceuticals, Inc.
+$647.1K
147,400
+53%
增持
—
SP Plus Corporation
+$629.3K
86,800
+28%
增持
ABM
ABM Industries, Inc.
+$625.3K
57,900
+30%
增持
—
Applied Industrial
+$579.9K
18,800
+13%
清仓
YUMC
Yum China Hldgs, Inc.
-$573.8K
0
-100%
增持
TXRH
Texas Roadhouse
+$573.2K
13,300
+40%
增持
ALNT
Allied Motion Technologies
+$572.4K
56,600
+22%
增持
PFBC
Preferred Bank
+$569.2K
51,500
+71%
增持
VPG
Vishay Precision Group
+$544.8K
53,400
+22%
增持
FSS
Federal Signal Corp.
+$507.0K
58,300
+2%
增持
VSEC
VSE Corp.
+$505.1K
38,500
+48%
增持
MOD
Modine Mfg Co Com
+$490.3K
95,800
+11%
增持
FCFS
FirstCash Holdings, Inc
+$485.2K
21,400
+20%
增持
LMAT
LeMaitre Vascular, Inc.
+$483.2K
28,700
+33%
增持
ALTG
Alta Equipment Group, Inc.
+$477.2K
108,000
+15%
减持
MGPI
MGP Ingredients, Inc.
-$473.6K
31,950
-5%
增持
FC
Franklin Covey Co.
+$458.2K
68,200
+47%
增持
NOVT
Novanta, Inc.
+$447.9K
7,000
+43%
建仓
CVV
CVD Equipment Corp.
+$429.6K
32,300
增持
—
ShockWave Medical, Inc.
+$426.4K
6,850
+33%
增持
PTEN
Patterson-Uti Energy, Inc.
-$424.9K
163,894
+18%
增持
INSP
Inspire Medical Systems, Inc.
+$423.0K
5,950
+55%
增持
CAL
Caleres Inc.
+$408.2K
57,600
+53%
减持
CDNS
Cadence Design System, Inc.
-$377.7K
17,700
-31%
增持
HFWA
Heritage Financial Corporation
+$354.7K
95,896
+73%
增持
FRME
First Merchants Corporation
+$347.1K
42,100
+66%
增持
MP
MP Materials Corp.
+$317.4K
52,600
+10%
增持
—
MRC Global, Inc.
+$315.5K
175,300
+46%
增持
CLW
Clearwater Paper Corp
+$307.8K
56,500
+35%
增持
WAFD
Washington Federal, Inc.
+$303.6K
58,200
+35%
增持
ASYS
Amtech Systems, Inc.
+$268.7K
118,900
+4%
建仓
OMAB
Grupo Aeroportuario del Centro
+$268.5K
3,000
清仓
—
AFYA Ltd.
-$265.5K
0
-100%
增持
TITN
Titan Machinery, Inc.
+$256.7K
60,100
+52%
增持
CRK
Comstock Res
+$228.5K
202,624
+42%
增持
MUSA
Murphy USA, Inc.
+$221.5K
4,000
+38%
