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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
23Q3 调仓
2023-06-30 → 2023-09-30 · 共 150 项
建仓 43
增持 71
减持 6
清仓 30
方向
标的
Δ市值
现股数(环比)
减持
PI
Impinj, Inc.
-$14.1M
35,700
-80%
增持
—
Weatherford International PLC
+$12.6M
196,920
+151%
减持
ACLS
Axcelis Technologies
-$12.5M
193,559
-19%
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。
建仓
OLED
Universal Display Corp.
+$9.7M
62,015
清仓
—
Veritiv Corp.
-$9.1M
0
-100%
增持
VRT
Vertiv Holdings Co.
+$8.0M
380,990
+53%
建仓
AVAV
Aerovironment, Inc.
+$7.7M
69,100
清仓
OSPN
OneSpan, Inc.
-$6.2M
0
-100%
建仓
HNI
HNI Corp.
+$5.9M
169,700
建仓
PRIM
Primoris Services Corp.
+$5.8M
178,600
建仓
HURN
Huron Consulting Group, Inc.
+$5.8M
55,900
增持
AEHR
Aehr Test Systems
+$5.6M
910,108
+4%
建仓
ONTO
Onto Innovation, Inc.
+$5.2M
41,100
增持
—
Constellium NV Cl A
+$5.2M
2,933,071
+5%
建仓
OSK
Oshkosh Corp.
+$5.2M
54,136
建仓
AAOI
Applied Optoelectronics Inc.
+$5.1M
468,415
增持
—
Camtek, Ltd.
+$5.1M
166,380
+12%
减持
CROX
Crocs, Inc.
-$4.9M
78,730
-25%
清仓
HLIT
Harmonic, Inc.
-$4.8M
0
-100%
清仓
MGNI
Magnite, Inc.
-$4.7M
0
-100%
清仓
LFUS
Littelfuse, Inc.
-$4.4M
0
-100%
建仓
—
PetlQ Inc
+$4.3M
219,600
建仓
BOOM
DMC Global, Inc.
+$4.3M
174,100
清仓
FELE
Franklin Electric
-$4.2M
0
-100%
清仓
CBT
Cabot Corp.
-$4.2M
0
-100%
建仓
ANF
Abercrombie & Fitch Co.
+$4.1M
73,500
清仓
SLAB
Silicon Laboratories, Inc.
-$4.0M
0
-100%
增持
FLS
Flowserve Corporation
+$4.0M
210,840
+77%
建仓
NXT
Nextracker, Inc.
+$3.9M
97,300
建仓
HLX
Helix Energy Solutions Group,
+$3.7M
335,600
建仓
—
Fabrinet
+$3.7M
22,200
建仓
CLW
Clearwater Paper Corp
+$3.7M
101,000
清仓
MTSI
Macom Technology Solutions
-$3.7M
0
-100%
清仓
STKL
SunOpta, Inc.
-$3.6M
0
-100%
建仓
GIII
G-III Apparel Group Ltd.
+$3.6M
144,000
清仓
OI
O-I Glass, Inc.
-$3.6M
0
-100%
建仓
GO
Grocery Outlet Hldg Corp.
+$3.3M
115,900
清仓
—
Alight, Inc.
-$3.3M
0
-100%
建仓
MNKD
Mannkind Corp.
+$3.3M
798,400
建仓
FSLY
Fastly, Inc.
+$3.3M
170,300
建仓
OSIS
Osi Systems, Inc.
+$3.0M
25,400
清仓
—
New Relic, Inc.
-$3.0M
0
-100%
清仓
ABM
ABM Industries, Inc.
-$2.9M
0
-100%
建仓
—
Primo Water Corp.
+$2.9M
211,500
增持
HAE
Haemonetics Corp.
+$2.9M
77,400
+63%
建仓
AVPT
AvePoint, Inc.
+$2.9M
425,000
清仓
—
PDC Energy, Inc.
-$2.8M
0
-100%
增持
PSN
Parsons Corp.
+$2.8M
131,300
+45%
增持
—
Axonics, Inc.
+$2.7M
161,620
+29%
增持
TCMD
Tactile Sys Technology, Inc.
-$2.7M
330,350
+12%
清仓
IMXI
International Money Express, I
-$2.7M
0
-100%
建仓
BJRI
BJ's Restaurants, Inc.
+$2.6M
112,200
清仓
—
ShockWave Medical, Inc.
-$2.6M
0
-100%
清仓
—
Alteryx, Inc. Com Cl A
-$2.6M
0
-100%
建仓
—
Rover Group, Inc.
+$2.6M
408,000
建仓
QLYS
Qualys, Inc.
+$2.5M
16,600
增持
—
Dynavax Technologies Corp.
+$2.5M
385,200
+57%
清仓
INSP
Inspire Medical Systems, Inc.
-$2.5M
0
-100%
增持
ACMR
ACM Research, Inc. Class A
+$2.5M
341,800
+20%
增持
FCFS
FirstCash Holdings, Inc
+$2.5M
61,700
+54%
建仓
ROCK
Gibraltar Inds
+$2.4M
35,700
建仓
ELF
e.l.f. Beauty, Inc.
+$2.4M
21,800
增持
TMDX
TransMedics Group, Inc.
-$2.4M
151,100
+19%
建仓
SRCE
1st Source Corp.
+$2.4M
55,900
建仓
ARRY
Array Biopharma
+$2.3M
104,000
建仓
QTRX
Quanterix Corp.
+$2.3M
83,400
清仓
ALNT
Allied Motion Technologies
-$2.3M
0
-100%
清仓
—
MRC Global, Inc.
-$2.2M
0
-100%
增持
EHC
Encompass Health Corporation
+$2.2M
111,600
+43%
增持
LNTH
Lantheus Hldgs Inc.
-$2.2M
169,340
+2%
清仓
NSP
Insperity, Inc.
-$2.1M
0
-100%
建仓
GRC
The Gorman-Rupp Co.
+$2.1M
65,000
增持
STRL
Sterling Construction Co., Inc
+$2.1M
110,000
+3%
建仓
MGRC
McGrath RentCorp
+$2.1M
21,100
建仓
POWL
Powell Industries Inc.
+$2.1M
25,400
建仓
HWKN
Hawkins, Inc.
+$2.1M
35,600
建仓
ATRC
Atricure, Inc.
+$2.1M
47,300
清仓
NSSC
Napco Sec Technologies, Inc.
-$2.1M
0
-100%
建仓
PLUS
EPlus, Inc.
+$2.0M
31,700
建仓
RPD
Rapid7, Inc.
+$2.0M
43,900
增持
SPXC
SPX Technologies, Inc.
+$2.0M
68,000
+64%
增持
PFBC
Preferred Bank
+$2.0M
82,600
+45%
增持
CHEF
The Chefs Warehouse, Inc.
-$2.0M
146,400
+3%
清仓
NOVT
Novanta, Inc.
-$2.0M
0
-100%
建仓
HALO
Halozyme Therapeutics, Inc.
+$1.9M
50,500
建仓
ANIP
ANI Pharmaceuticals, Inc.
+$1.9M
33,000
建仓
TREX
Trex Company, Inc.
+$1.9M
30,400
建仓
ASTE
Astec Inds Inc.
+$1.9M
39,400
增持
OPCH
Option Care Health Inc.
+$1.8M
167,800
+51%
增持
TMCI
Treace Medical Concepts, Inc.
-$1.8M
355,600
+41%
清仓
NRDS
NerdWallet, Inc.
-$1.8M
0
-100%
增持
BOOT
Boot Barn Hldgs, Inc.
+$1.7M
60,800
+61%
减持
CIEN
Ciena Corporation
-$1.7M
70,200
-41%
增持
—
Earthstone Energy Inc.
+$1.7M
240,600
+8%
增持
FORM
Formfactor Inc.
+$1.7M
188,100
+32%
增持
JBI
Janus International Group, Inc
+$1.7M
378,600
+68%
增持
WWD
Woodward, Inc.
+$1.7M
48,800
+32%
增持
RES
RPC, Inc.
+$1.6M
708,576
+8%
增持
ALGM
Allegro MicroSystems, Inc.
-$1.6M
225,930
+15%
建仓
UPWK
Upwork, Inc.
+$1.6M
143,400
增持
ATEC
Alphatec Hldgs Inc.
-$1.6M
1,236,040
+26%
增持
ICFI
ICF International, Inc.
+$1.6M
95,700
+19%
增持
ZETA
Zeta Global Holdings Corp.
+$1.6M
674,700
+42%
清仓
—
Brookline Bancorp, Inc.
-$1.6M
0
-100%
增持
AMPH
Amphastar Pharmaceuticals, Inc
-$1.5M
152,500
+3%
增持
IPAR
Inter Parfums
+$1.5M
41,600
+37%
增持
NOV
NOV, Inc.
+$1.4M
141,000
+49%
增持
CECO
CECO Environmental Corp.
+$1.4M
416,700
+6%
增持
ACHC
Acadia Healthcare Co., Inc.
+$1.4M
77,800
+51%
增持
PDD
PDD Holdings Inc.
+$1.3M
25,000
+56%
增持
—
Perion Network, Ltd.
+$1.3M
470,290
+10%
增持
LBRT
Liberty Energy, Inc.
+$1.3M
149,400
+36%
增持
FTDR
Frontdoor, Inc.
+$1.3M
164,700
+40%
增持
ADMA
ADMA Biologics, Inc.
+$1.3M
2,078,400
+25%
增持
AMLX
Amylyx Pharmaceuticals, Inc.
+$1.3M
170,000
+100%
建仓
CDRE
Cadre Hldgs, Inc.
+$1.3M
47,300
增持
ALSN
Allison Transmission Holdings,
+$1.2M
94,100
+22%
增持
—
Applied Industrial
+$1.2M
30,500
+25%
增持
LYTS
LSI Industries Inc.
+$1.2M
298,700
+5%
增持
SCSC
Scansource, Inc.
+$1.2M
95,664
+64%
增持
VECO
Veeco Instruments, Inc.
+$1.2M
226,800
+12%
增持
VC
Visteon Corp.
+$1.1M
57,970
+21%
增持
VCYT
Veracyte, Inc.
+$1.1M
597,540
+24%
增持
—
Super Micro Computer Inc.
+$1.0M
15,700
+20%
增持
WING
Wingstop, Inc.
+$1.0M
14,200
+87%
增持
—
International Seaways, Inc.
+$1.0M
86,500
+16%
增持
DECK
Deckers Outdoor Corp.
+$1.0M
25,700
+11%
增持
—
Model N, Inc.
-$995.5K
241,430
+24%
清仓
MXL
Maxlinear, Inc. Class A
-$994.3K
0
-100%
增持
LMAT
LeMaitre Vascular, Inc.
+$979.3K
57,000
+80%
增持
CPRX
Catalyst Pharmaceuticals, Inc.
+$967.3K
293,600
+60%
增持
VVX
V2X, Inc.
+$964.8K
112,500
+15%
增持
EIG
Employers Holdings, Inc.
+$924.7K
112,200
+18%
清仓
TME
Tencent Music Entertainment
-$922.5K
0
-100%
增持
MBWM
Mercantile Bank Corp.
+$911.8K
85,603
+36%
增持
PTEN
Patterson-Uti Energy, Inc.
+$910.7K
261,700
+16%
清仓
—
Nine Energy Service, Inc.
-$903.1K
0
-100%
增持
MGPI
MGP Ingredients, Inc.
+$892.3K
53,650
+20%
增持
MTDR
Matador Resources Company
+$886.9K
48,600
+27%
清仓
KVHI
KVH Industries, Inc.
-$831.7K
0
-100%
增持
CAL
Caleres Inc.
+$814.9K
84,000
+26%
减持
ATI
ATI, Inc.
-$814.5K
95,000
-11%
增持
MUSA
Murphy USA, Inc.
+$796.3K
6,700
+40%
增持
UNM
UNUM Group
+$786.9K
76,700
+23%
增持
SIBN
SI-BONE, Inc.
+$751.7K
315,100
+43%
增持
FSS
Federal Signal Corp.
+$727.5K
91,400
+24%
减持
MNSO
MINISO Group Holding Limited
+$696.7K
90,400
-7%
增持
EZPW
EZCorp, Inc.
+$669.3K
595,300
+18%
增持
FIX
Comfort Systems USA Inc.
+$661.6K
14,000
+33%
增持
POWI
Power Integrations
+$659.0K
94,573
+37%
