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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
23Q2 调仓
2023-03-31 → 2023-06-30 · 共 150 项
建仓 30
增持 88
减持 14
清仓 18
方向
标的
Δ市值
现股数(环比)
减持
—
Constellium NV Cl A
-$21.4M
2,799,271
-39%
增持
AEHR
Aehr Test Systems
+$14.3M
873,108
+25%
减持
ACLS
Axcelis Technologies
+$7.8M
240,399
-12%
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
VCYT
Veracyte, Inc.
+$7.6M
482,310
+127%
增持
ATEC
Alphatec Hldgs Inc.
+$7.0M
980,470
+44%
建仓
NVTS
Navitas Semiconductor Corp.
+$6.7M
640,000
建仓
POWI
Power Integrations
+$6.6M
69,270
清仓
HALO
Halozyme Therapeutics, Inc.
-$6.3M
0
-100%
建仓
VRT
Vertiv Holdings Co.
+$6.2M
248,340
建仓
SIBN
SI-BONE, Inc.
+$5.9M
220,200
建仓
—
CIRCOR International, Inc.
+$5.4M
95,000
建仓
EHC
Encompass Health Corporation
+$5.3M
78,100
建仓
VECO
Veeco Instruments, Inc.
+$5.2M
202,500
增持
EXTR
Extreme Networks, Inc.
+$5.0M
337,900
+68%
建仓
SNCY
Sun Country Airlines Holdings,
+$4.8M
213,200
清仓
—
Fabrinet
-$4.8M
0
-100%
建仓
DGII
Digi International I
+$4.8M
120,600
建仓
MGNI
Magnite, Inc.
+$4.7M
340,700
清仓
SYNA
Synaptics, Inc.
-$4.5M
0
-100%
建仓
FLS
Flowserve Corporation
+$4.4M
119,200
建仓
LFUS
Littelfuse, Inc.
+$4.4M
15,200
建仓
WWD
Woodward, Inc.
+$4.4M
37,100
建仓
WEAV
Weave Communications, Inc.
+$4.4M
394,500
建仓
PSN
Parsons Corp.
+$4.4M
90,400
增持
BLBD
Blue Bird Corporation
+$4.2M
301,300
+137%
减持
MXL
Maxlinear, Inc. Class A
-$4.0M
31,505
-78%
建仓
ALGT
Allegiant Travel Co.
+$3.8M
30,400
增持
PI
Impinj, Inc.
-$3.8M
179,145
+22%
建仓
FTDR
Frontdoor, Inc.
+$3.8M
117,700
建仓
AORT
Artivion, Inc
+$3.6M
211,300
建仓
SHLS
Shoals Technology Group, Inc.
+$3.6M
139,600
建仓
JELD
JELD-WEN Holding, Inc.
+$3.5M
201,900
建仓
SPXC
SPX Technologies, Inc.
+$3.5M
41,500
增持
—
Weatherford International PLC
+$3.5M
78,580
+168%
建仓
NEO
NeoGenomics, Inc.
+$3.4M
213,000
增持
MMSI
Merit Medical System Inc
+$3.3M
78,160
+78%
清仓
CALX
Calix, Inc.
-$3.3M
0
-100%
建仓
—
Super Micro Computer Inc.
+$3.3M
13,100
清仓
SITM
SiTime Corporation
-$3.1M
0
-100%
增持
TCMD
Tactile Sys Technology, Inc.
+$3.1M
294,950
+14%
增持
ICFI
ICF International, Inc.
+$3.0M
80,200
+26%
清仓
CALY
Topgolf Callaway Brands Corp.
-$3.0M
0
-100%
增持
ALGM
Allegro MicroSystems, Inc.
+$2.9M
196,040
+59%
减持
—
Dada Nexus Limited
-$2.8M
22,800
-93%
清仓
FC
Franklin Covey Co.
-$2.6M
0
-100%
增持
TMCI
Treace Medical Concepts, Inc.
+$2.5M
251,500
+63%
增持
HLIT
Harmonic, Inc.
+$2.5M
294,300
+93%
增持
TMDX
TransMedics Group, Inc.
+$2.5M
127,000
+17%
增持
GVA
Granite Construction
+$2.4M
110,100
+132%
增持
ADMA
ADMA Biologics, Inc.
+$2.3M
1,668,700
+43%
增持
—
Perion Network, Ltd.
-$2.3M
426,250
+10%
增持
STRL
Sterling Construction Co., Inc
+$2.2M
106,700
+9%
清仓
KTB
Kontoor Brands, Inc.
-$2.2M
0
-100%
增持
PLAB
Photronics, Inc.
+$2.2M
194,700
+15%
增持
UCTT
Ultra Clean Holdings
+$2.2M
170,900
+29%
增持
CECO
CECO Environmental Corp.
+$2.1M
392,600
+76%
增持
HXL
Hexcel Corporation
+$2.1M
59,000
+71%
清仓
ADTN
Adtran, Inc.
-$2.1M
0
-100%
清仓
—
Avid Technology, Inc.
-$2.1M
0
-100%
建仓
NSSC
Napco Sec Technologies, Inc.
+$2.1M
59,300
增持
MHO
M/I Homes, Inc.
+$2.0M
40,400
+67%
增持
—
Model N, Inc.
+$2.0M
194,818
+33%
减持
NRDS
NerdWallet, Inc.
-$2.0M
187,700
-18%
增持
—
Camtek, Ltd.
+$1.9M
148,202
+26%
清仓
CLW
Clearwater Paper Corp
-$1.9M
0
-100%
清仓
—
Guess, Inc
-$1.9M
0
-100%
减持
—
Everi Hldgs, Inc.
-$1.9M
229,200
-24%
增持
ATI
ATI, Inc.
+$1.8M
106,800
+47%
清仓
TITN
Titan Machinery, Inc.
-$1.8M
0
-100%
减持
AMPH
Amphastar Pharmaceuticals, Inc
+$1.8M
147,800
-17%
清仓
TWOU
2U, Inc.
-$1.8M
0
-100%
清仓
—
Univar Solutions, Inc.
-$1.8M
0
-100%
增持
VVX
V2X, Inc.
+$1.8M
97,800
+26%
建仓
SSD
Simpson Manufacturing
+$1.7M
12,600
增持
ZETA
Zeta Global Holdings Corp.
+$1.7M
474,500
+122%
建仓
FIX
Comfort Systems USA Inc.
+$1.7M
10,500
增持
FCFS
FirstCash Holdings, Inc
+$1.7M
40,100
+87%
增持
MGPI
MGP Ingredients, Inc.
+$1.7M
44,850
+40%
增持
FORM
Formfactor Inc.
+$1.7M
143,000
+41%
增持
—
Playa Hotels & Resorts N.V.
+$1.7M
655,300
+71%
增持
MOD
Modine Mfg Co Com
+$1.6M
115,000
+20%
增持
ACHC
Acadia Healthcare Co., Inc.
+$1.6M
51,400
+48%
增持
FSS
Federal Signal Corp.
+$1.6M
73,900
+27%
增持
CHEF
The Chefs Warehouse, Inc.
+$1.5M
141,500
+37%
建仓
WING
Wingstop, Inc.
+$1.5M
7,600
清仓
MP
MP Materials Corp.
-$1.5M
0
-100%
增持
—
SP Plus Corporation
+$1.5M
113,700
+31%
增持
EVH
Evolent Health, Inc.
+$1.5M
227,910
+36%
增持
CROX
Crocs, Inc.
-$1.5M
105,500
+0%
增持
—
Dynavax Technologies Corp.
+$1.4M
245,400
+39%
增持
BDC
Belden, Inc.
+$1.4M
98,755
+7%
增持
ALSN
Allison Transmission Holdings,
+$1.4M
77,400
+17%
增持
—
H&E Equipment Services, Inc.
+$1.3M
82,100
+47%
增持
ACMR
ACM Research, Inc. Class A
+$1.2M
285,600
+32%
增持
KWR
Quaker Chemical Corporation
+$1.2M
20,800
+44%
建仓
LI
Li Auto, Inc. ADR
+$1.2M
33,000
增持
EIG
Employers Holdings, Inc.
+$1.1M
95,100
+64%
增持
—
Haynes Intl, Inc.
+$1.1M
72,600
+43%
增持
—
Alight, Inc.
+$1.1M
361,300
+49%
增持
—
Axonics, Inc.
+$1.1M
125,440
+31%
增持
—
ShockWave Medical, Inc.
+$1.1M
9,050
+32%
增持
INSP
Inspire Medical Systems, Inc.
+$1.1M
7,650
+29%
建仓
TSM
Taiwan Semiconductor
+$1.1M
10,500
增持
EZPW
EZCorp, Inc.
+$1.0M
506,200
+36%
增持
LYTS
LSI Industries Inc.
+$1.0M
283,700
+57%
增持
—
Inmode Ltd.
+$997.8K
137,100
+6%
增持
HAE
Haemonetics Corp.
+$990.7K
47,500
+29%
增持
UNM
UNUM Group
+$968.5K
62,600
+23%
增持
FELE
Franklin Electric
+$962.2K
40,900
+19%
增持
VSEC
VSE Corp.
+$880.1K
47,700
+24%
增持
—
Applied Industrial
+$861.8K
24,400
+30%
增持
OI
O-I Glass, Inc.
+$860.4K
168,100
+40%
增持
NOVT
Novanta, Inc.
+$837.8K
10,600
+51%
清仓
RCKY
Rocky Brands, Inc.
-$832.8K
0
-100%
增持
MMS
Maximus, Inc.
+$828.6K
47,800
+17%
建仓
LEGN
Legend Biotech Corp.
+$828.4K
12,000
减持
LNTH
Lantheus Hldgs Inc.
-$794.4K
166,180
-7%
增持
PTEN
Patterson-Uti Energy, Inc.
+$793.6K
226,500
+38%
减持
PDD
PDD Holdings Inc.
-$791.3K
16,000
-36%
增持
—
New Relic, Inc.
+$758.4K
45,300
+55%
清仓
BEKE
KE Holdings, Inc.
-$753.6K
0
-100%
增持
—
International Seaways, Inc.
+$718.0K
74,800
+46%
增持
—
Earthstone Energy Inc.
+$690.1K
223,000
+16%
增持
VC
Visteon Corp.
+$679.7K
47,760
+21%
增持
LMAT
LeMaitre Vascular, Inc.
+$648.9K
31,600
+10%
增持
IPAR
Inter Parfums
+$640.3K
30,400
+25%
增持
PDFS
Pdf Solutions, Inc.
+$634.8K
54,500
+27%
增持
—
SeaWorld Entertainment Inc.
+$624.7K
99,600
+23%
减持
MNSO
MINISO Group Holding Limited
-$604.8K
96,800
-24%
增持
MCRI
Monarch Casino & Resort, Inc.
+$559.4K
45,200
+28%
增持
—
MRC Global, Inc.
+$545.7K
223,400
+27%
增持
MTSI
Macom Technology Solutions
+$526.0K
55,700
+26%
减持
DECK
Deckers Outdoor Corp.
-$513.8K
23,120
-18%
增持
OPCH
Option Care Health Inc.
+$512.0K
111,000
+14%
减持
SCSC
Scansource, Inc.
-$498.7K
58,200
-20%
增持
MUSA
Murphy USA, Inc.
+$461.1K
4,800
+20%
增持
CBT
Cabot Corp.
-$451.0K
62,405
+3%
增持
TXRH
Texas Roadhouse
+$437.9K
16,700
+26%
减持
CDNS
Cadence Design System, Inc.
+$409.0K
17,600
-1%
增持
AVNW
Aviat Networks, Inc.
+$397.5K
109,507
+16%
增持
SLAB
Silicon Laboratories, Inc.
+$380.3K
25,510
+23%
减持
TME
Tencent Music Entertainment
-$360.9K
125,000
-19%
增持
STKL
SunOpta, Inc.
+$357.1K
537,700
+28%
增持
CAL
Caleres Inc.
+$355.0K
66,900
+16%
增持
—
Nine Energy Service, Inc.
-$349.0K
235,800
+5%
增持
CVV
CVD Equipment Corp.
+$329.5K
103,000
+219%
增持
ABM
ABM Industries, Inc.
+$319.5K
68,500
+18%
增持
PFBC
Preferred Bank
+$311.7K
57,000
+11%
增持
JBI
Janus International Group, Inc
+$305.0K
224,700
+6%
增持
IMXI
International Money Express, I
+$290.0K
108,300
+18%
