OBERWEIS ASSET MANAGEMENT INC/ Q1 2019 Filing

Filed May 15, 2019

Portfolio Value

$498.0B

Holdings

201

Report Date

Q1 2019

Filing Type

13F-HR

All Holdings (201 positions)

#StockSharesValue% PortfolioType
1
NOMDNomad Foods Ltd.
2,827,798$57.8B11.61%
2
ARGXArgenx SE Sponsored ADR
307,000$38.3B7.70%
3
Mellanox Technologies Ltd.
285,590$33.8B6.79%
4
GW Pharmaceuticals Plc Ads
193,900$32.7B6.56%
5
GOOSCanada Goose Holdings, Inc.
275,850$13.2B2.66%
6
TNDMTandem Diabetes Care, Inc.
191,120$12.1B2.44%
7
BOOMDMC Global, Inc.
215,227$10.7B2.15%
8
SKYWSkywest Inc
162,457$8.8B1.77%
9
Biotelemetry, Inc.
140,180$8.8B1.76%
10
VCELVericel Corp.
500,670$8.8B1.76%
11
HMS Holdings Corp.
273,750$8.1B1.63%
12
SKYSkyline Champion Corp
416,573$7.9B1.59%
13
Blucora, Inc.
234,154$7.8B1.57%
14
MBUUMalibu Boats, Inc.
185,308$7.3B1.47%
15
UPLDUpland Software, Inc.
162,390$6.9B1.38%
16
BABAAlibaba ADR
36,555$6.7B1.34%
17
Carbonite, Inc.
268,154$6.7B1.34%
18
DECKDeckers Outdoor Corp.
45,210$6.6B1.33%
19
VICRVicor Corp.
212,670$6.6B1.32%
20
CDNACareDx, Inc.
209,210$6.6B1.32%
21
Cabot Microelectronics Corp.
51,960$5.8B1.17%
22
Cornerstone Ondemand, Inc.
103,680$5.7B1.14%
23
LGNDLigand Pharmaceuticals
44,649$5.6B1.13%
24
ATRCAtricure, Inc.
203,410$5.4B1.09%
25
TCMDTactile Sys Technology, Inc.
101,720$5.4B1.08%
26
TREXTrex Company, Inc.
85,710$5.3B1.06%
27
GDOTGreen Dot Corp. Cl A
85,460$5.2B1.04%
28
CYBRCyber-Ark Software
42,170$5.0B1.01%
29
BANDBandwidth, Inc.
72,970$4.9B0.98%
30
STAAStaar Surgical Co.
140,620$4.8B0.97%
31
Mobileiron, Inc.
858,480$4.7B0.94%
32
IRTCIrhythm Technologies Inc
60,710$4.6B0.91%
33
MPWRMonolithic Pwr Sys
30,878$4.2B0.84%
34
ENVUSDEnvestnet, Inc.
62,790$4.1B0.82%
35
Eldorado Resorts, Inc.
86,363$4.0B0.81%
36
CMCOColumbus McKinnon Corp. NY
103,453$3.6B0.71%
37
Career Education Corp.
147,179$2.4B0.49%
38
Quantenna Communications Inc
95,900$2.3B0.47%
39
EDUNew Oriental Education ADR
24,000$2.2B0.43%
40
MOMOUSDMomo, Inc. ADR
50,730$1.9B0.39%
41
MITKMitek Systems, Inc.
158,000$1.9B0.39%
42
GDSGDS Holdings Ltd. ADR
54,161$1.9B0.39%
43
KNKnowles Corp.
107,300$1.9B0.38%
44
CSFLUSDCenterstate Bank Corp.
78,146$1.9B0.37%
45
FSSFederal Signal Corp.
69,510$1.8B0.36%
46
Rosetta Stone, Inc.
82,700$1.8B0.36%
47
Mesa Air Group, Inc.
216,500$1.8B0.36%
48
TALTal Education Group ADR
50,000$1.8B0.36%
49
MasterCraft Boat Holdings, Inc
71,000$1.6B0.32%
50
CTRPUSDCTRIP Com Int'l Ltd ADR
35,000$1.5B0.31%
51
Cardtronics, Inc.
42,900$1.5B0.31%
52
SEISolaris Oilfield Infrastructur
88,800$1.5B0.29%
53
AMRCAmeresco, Inc.
87,008$1.4B0.28%
54
BHEBenchmark Electronics Inc
52,840$1.4B0.28%
55
HRIHerc Hldgs, Inc.
34,900$1.4B0.27%
56
OSPNOneSpan, Inc.
69,350$1.3B0.27%
57
PORPortland General Electric Co.
25,250$1.3B0.26%
58
Verint Sys Inc.
20,930$1.3B0.25%
59
Monotype Imaging Holdings, Inc
61,300$1.2B0.24%
60
ON1Old National Bancorp
74,115$1.2B0.24%
61
MGRCMcGrath RentCorp
21,200$1.2B0.24%
62
RUSHARush Enterprises,Inc. Cl A
28,400$1.2B0.24%
63
Physicians Realty Trust
63,031$1.2B0.24%
64
BOOTBoot Barn Hldgs, Inc.
40,000$1.2B0.24%
65
MODNEURModel N, Inc.
67,000$1.2B0.24%
66
WSMWilliams-Sonoma, Inc.
20,830$1.2B0.24%
67
BZUNBaozun Inc. Spon ADR
28,000$1.2B0.23%
68
K12, Inc.
33,268$1.1B0.23%
69
Audio Codes ADR
81,900$1.1B0.23%
70
CPFCentral Pacific Financial Corp
39,100$1.1B0.23%
71
AORTCryolife Inc.
38,344$1.1B0.22%
72
CLARClarus Corp.
83,500$1.1B0.21%
73
NTESNetease.Com, Inc. ADR
4,430$1.1B0.21%
74
Pyxus International, Inc.
44,700$1.1B0.21%
75
SPYSPDR S&P 500 ETF Trust
3,751$1.1B0.21%
76
Telaria, Inc.
166,800$1.1B0.21%
77
ASBAssociated Banc-Corp
49,540$1.1B0.21%
78
XEJAccuray Inc.
216,400$1.0B0.21%
79
VCYTVeracyte, Inc.
39,500$988.0M0.20%
80
GPOR1EURGulfport Energy Corp.
121,900$978.0M0.20%
81
SFNCSimmons First National Corp.
39,230$960.0M0.19%
82
MTRNMaterion Corp.
16,800$959.0M0.19%
83
TG7Triumph Group, Inc.
49,240$939.0M0.19%
84
AMWDAmer Woodmark
11,300$934.0M0.19%
85
Ryman Hospitality Pptys. Inc.
11,350$933.0M0.19%
86
NJRNew Jersey Res Corp.
18,630$928.0M0.19%
87
VREXVarex Imaging Corp.
27,000$915.0M0.18%
88
OSKOshkosh Corp.
12,140$912.0M0.18%
89
CAMTCamtek, Ltd.
100,800$899.0M0.18%
90
SWXSouthwest Gas Corp.
10,830$891.0M0.18%
91
PXLWEURPixelworks, Inc.
225,156$883.0M0.18%
92
CMTLComtech Telecommunications CP
36,100$838.0M0.17%
93
NEONeogenomics, Inc.
40,600$831.0M0.17%
94
HTEURHersha Hospitality Trust
47,820$820.0M0.16%
95
CA8ACACI International, Inc.
4,460$812.0M0.16%
96
DGIIDigi International I
64,000$811.0M0.16%
97
CRMTAmerica's Car-Mart
8,600$786.0M0.16%
98
W&T Offshore, Inc.
113,600$784.0M0.16%
99
HWCHancock Whitney Corp.
19,390$783.0M0.16%
100
EHTHEhealth, Inc.
12,500$779.0M0.16%
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