OBERWEIS ASSET MANAGEMENT INC/ — 13F Holdings

2026 Q2  ·  202 Positions

2026 Q2 Portfolio Activity

In 2026 Q2, OBERWEIS ASSET MANAGEMENT INC/ maintained a portfolio of 202 distinct positions. The most significant new addition was Maxlinear, Inc. Class A, now representing 0.85% of the total fund value. They heavily accumulated shares in Silicon Motion Techn ADR, increasing the position by 12.0%. The fund also reduced its exposure to Lumentum Hldgs, Inc. by 72.9%.
Position History hover any row below to update
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PCA Score Concentration Risk
Risk ENB
Total Positions
202
Quarter
2026 Q2
Top Holding
CRDO (5.7%)
Top 10 Concentration
26.6%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 202

OBERWEIS ASSET MANAGEMENT INC/ Full Holdings List — 2026 Q2

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
CRDO
Credo Technolog...
Technology 5.69% 2.83% #1 2
Prev: #3
4.8
-8,540 -0.8%
P
S
1,013,428 $275,601,745
$49.38 +386.5%
$271.95 -11.7%
2024 Q1 13F Filing 2026-06-30 2026-08-14
AAOI
Applied Optoele...
Technology 5.48% 5.87% #2 1
Prev: #1
3.7
-558,842 -23.8%
P
S
1,791,127 $265,373,376 2016 Q3 13F Filing 2026-06-30 2026-08-14
DOCN
DigitalOcean Ho...
Technology 3.02% 2.35% #3 1
Prev: #4
2.7
2,500 0.3%
P
S
930,005 $146,038,685 2024 Q3 13F Filing 2026-06-30 2026-08-14
SIMO
Silicon Motion ...
Technology 2.18% 0.94% #4 19
Prev: #23
3.4
33,800 12.0%
P
S
316,350 $105,448,946 2005 Q2 13F Filing 2026-06-30 2026-08-14
UCTT
Ultra Clean Hol...
Technology 1.91% 1.18% #5 8
Prev: #13
1.8
6,800 1.1%
P
S
647,276 $92,295,085 2010 Q1 13F Filing 2026-06-30 2026-08-14
SN
SharkNinja, Inc...
Consumer Cyclical 1.87% 1.88% #6 1
Prev: #5
1.2
-6,470 -1.1%
P
S
593,500 $90,372,245 2014 Q1 13F Filing 2026-06-30 2026-08-14
SITM
SiTime Corporat...
Technology 1.84% 1.22% #7 5
Prev: #12
1.2
220 0.2%
P
S
119,501 $89,095,166 2023 Q1 13F Filing 2026-06-30 2026-08-14
BTSG
BrightSpring He...
Healthcare 1.71% 1.46% #8
Prev: #8
1.2
26,310 2.3%
P
S
1,185,280 $82,661,427 2025 Q2 13F Filing 2026-06-30 2026-08-14
HNGE
Hinge Health, I...
Healthcare 1.47% 0.53% #9 62
Prev: #71
3.6
389,710 83.7%
P
S
855,476 $71,004,508 2026 Q1 13F Filing 2026-06-30 2026-08-14
RMBS
Rambus, Inc
Technology 1.45% 1.34% #10
Prev: #10
1.1
700 0.1%
P
S
527,016 $69,956,104 2024 Q4 13F Filing 2026-06-30 2026-08-14
MTSI
Macom Technolog...
Technology 1.41% 1.42% #11 2
Prev: #9
1.1
-36,530 -16.9%
P
S
179,356 $68,221,642 2020 Q3 13F Filing 2026-06-30 2026-08-14
LITE
Lumentum Hldgs,...
Technology 1.28% 5.53% #12 10
Prev: #2
0.5
-194,037 -72.9%
P
S
72,185 $61,939,061 2017 Q1 13F Filing 2026-06-30 2026-08-14
LSCC
Lattice Semicon...
Technology 1.24% 1.03% #13 5
Prev: #18
1.0
17,380 4.6%
P
S
391,816 $59,932,175 2014 Q2 13F Filing 2026-06-30 2026-08-14
NVMI
Nova Ltd.
Technology 1.22% 1.77% #14 8
Prev: #6
0.5
-29,280 -21.2%
P
S
108,675 $59,004,005 2009 Q4 13F Filing 2026-06-30 2026-08-14
CRS
Carpenter Techn...
Industrials 1.19% 1.10% #15 1
Prev: #16
1.0
-1,160 -1.2%
P
S
93,273 $57,534,775 2017 Q4 13F Filing 2026-06-30 2026-08-14
FTDR
Frontdoor, Inc.
Consumer Cyclical 1.15% 1.12% #16 1
Prev: #15
1.0
1,100 0.2%
P
S
719,060 $55,791,865 2023 Q2 13F Filing 2026-06-30 2026-08-14
ECG
Everus Construc...
Industrials 1.13% 1.14% #17 3
Prev: #14
1.0
1,650 0.5%
P
S
328,183 $54,461,969 2025 Q2 13F Filing 2026-06-30 2026-08-14
VCYT
Veracyte, Inc.
Healthcare 1.07% 0.80% #18 22
Prev: #40
0.9
37,900 4.5%
P
S
877,734 $51,549,318 2018 Q3 13F Filing 2026-06-30 2026-08-14
POWL
Powell Industri...
Industrials 1.06% 0.55% #19 48
Prev: #67
3.4
145,364 425.6%
P
S
179,521 $51,407,634 2018 Q3 13F Filing 2026-06-30 2026-08-14
LTH
Life Time Holdi...
Consumer Cyclical 1.00% 0.92% #20 4
Prev: #24
0.9
29,120 2.5%
P
S
1,189,620 $48,584,081 2025 Q1 13F Filing 2026-06-30 2026-08-14
RSI
Rush Street Int...
Consumer Cyclical 1.00% 0.92% #21 4
Prev: #25
2.4
193,370 13.5%
P
S
1,627,930 $48,414,638 2024 Q1 13F Filing 2026-06-30 2026-08-14
MRCY
Mercury Systems...
Industrials 0.99% 0.84% #22 12
Prev: #34
0.9
1,700 0.4%
P
S
392,723 $48,041,805 1999 Q4 13F Filing 2026-06-30 2026-08-14
BROS
Dutch Bros., In...
Consumer Cyclical 0.97% 0.90% #23 6
Prev: #29
2.4
57,600 9.6%
P
S
656,093 $47,114,038 2024 Q2 13F Filing 2026-06-30 2026-08-14
CLH
Clean Harbors, ...
Industrials 0.95% 1.22% #24 13
Prev: #11
2.4
9,120 6.3%
P
S
153,475 $45,850,656 2019 Q1 13F Filing 2026-06-30 2026-08-14
SEI
Solaris Energy ...
Energy 0.94% 0.89% #25 5
Prev: #30
2.4
32,692 6.1%
P
S
564,581 $45,426,174 2018 Q3 13F Filing 2026-06-30 2026-08-14
DIOD
Diodes, Inc.
Technology 0.94% 0.45% #26 63
Prev: #89
3.4
189,450 84.5%
P
S
413,750 $45,280,800 2000 Q2 13F Filing 2026-06-30 2026-08-14
ACA
Arcosa, Inc.
Industrials 0.89% 0.84% #27 8
Prev: #35
2.4
27,750 10.4%
P
S
295,450 $42,925,931 2019 Q4 13F Filing 2026-06-30 2026-08-14
BLBD
Blue Bird Corpo...
Industrials 0.86% 0.65% #28 20
Prev: #48
2.8
140,600 36.1%
P
S
529,838 $41,836,008 2023 Q1 13F Filing 2026-06-30 2026-08-14
CAMT
Camtek, Ltd.
Technology 0.85% 1.00% #29 9
Prev: #20
2.3
30,600 13.7%
P
S
253,380 $41,331,346 2018 Q1 13F Filing 2026-06-30 2026-08-14
LIVN
LivaNova Plc
Healthcare 0.85% 0.60% #30 25
Prev: #55
3.3
178,250 55.4%
P
S
500,150 $41,127,335 2023 Q4 13F Filing 2026-06-30 2026-08-14
AMSC
American Superc...
Industrials 0.85% 0.85% #31 2
Prev: #33
2.3
137,600 16.2%
P
S
987,500 $40,991,125 2009 Q2 13F Filing 2026-06-30 2026-08-14
MXL
Maxlinear, Inc....
Technology 0.85% #32
Prev: #—
3.8
319,500
NEW
319,500 $40,905,585 2012 Q3 13F Filing 2026-06-30 2026-08-14
GMED
Globus Medical,...
Healthcare 0.84% 1.00% #33 14
Prev: #19
2.8
119,900 30.6%
P
S
512,100 $40,461,021 2015 Q4 13F Filing 2026-06-30 2026-08-14
NOVT
Novanta, Inc.
Technology 0.82% #34
Prev: #—
3.8
244,260
NEW
244,260 $39,628,742 2022 Q3 13F Filing 2026-06-30 2026-08-14
SKYW
Skywest Inc
Industrials 0.79% 1.06% #35 18
Prev: #17
0.8
-8,700 -2.2%
P
S
383,799 $38,122,755 2015 Q2 13F Filing 2026-06-30 2026-08-14
VIAV
Viavi Solutions...
Technology 0.78% 0.58% #36 26
Prev: #62
2.8
200,400 33.8%
P
S
793,600 $37,894,400 2019 Q3 13F Filing 2026-06-30 2026-08-14
MOG/A
Moog Inc. - A
Industrials 0.76% 0.39% #37 64
Prev: #101
3.3
41,825 93.1%
P
S
86,735 $36,761,762 2026 Q1 13F Filing 2026-06-30 2026-08-14
LFUS
Littelfuse, Inc...
Technology 0.75% 0.72% #38 5
Prev: #43
2.3
8,000 11.1%
P
S
79,800 $36,335,334 2023 Q2 13F Filing 2026-06-30 2026-08-14
ARQT
Arcutis Biother...
Healthcare 0.74% 0.95% #39 18
Prev: #21
0.8
7,000 0.5%
P
S
1,372,941 $35,998,513 2025 Q4 13F Filing 2026-06-30 2026-08-14
FCFS
FirstCash Holdi...
Financial Services 0.74% 0.92% #40 14
Prev: #26
0.8
440 0.3%
P
S
166,105 $35,931,834 2022 Q2 13F Filing 2026-06-30 2026-08-14
BLLN
Billiontoone, I...
Healthcare 0.74% #41
Prev: #—
3.8
299,030
NEW
299,030 $35,877,619 2026 Q2 13F Filing 2026-06-30 2026-08-14
DAN
Dana Inc.
Consumer Cyclical 0.74% 1.60% #42 35
Prev: #7
0.8
-293,200 -18.2%
P
S
1,318,300 $35,870,943 2018 Q2 13F Filing 2026-06-30 2026-08-14
ESI
Element Solutio...
Basic Materials 0.73% #43
Prev: #—
3.8
740,100
NEW
740,100 $35,339,775 2026 Q2 13F Filing 2026-06-30 2026-08-14
AIR
AAR Corp.
Industrials 0.73% 0.79% #44 3
Prev: #41
0.8
1,200 0.5%
P
S
246,325 $35,207,232 2006 Q1 13F Filing 2026-06-30 2026-08-14
RELY
Remitly Global,...
Technology 0.73% 0.67% #45
Prev: #45
2.3
116,100 8.0%
P
S
1,570,400 $35,192,664 2025 Q2 13F Filing 2026-06-30 2026-08-14
ICUI
ICU Medical, In...
Healthcare 0.72% 0.78% #46 4
Prev: #42
2.3
33,340 16.4%
P
S
237,050 $34,751,530 2024 Q3 13F Filing 2026-06-30 2026-08-14
FSS
Federal Signal ...
Industrials 0.71% 0.85% #47 15
Prev: #32
0.8
1,450 0.5%
P
S
269,084 $34,574,603 2017 Q4 13F Filing 2026-06-30 2026-08-14
OUST
Ouster, Inc.
Technology 0.71% #48
Prev: #—
3.8
545,810
NEW
545,810 $34,124,041 2026 Q2 13F Filing 2026-06-30 2026-08-14
LEVI
Levi Strauss & ...
Consumer Cyclical 0.70% 0.64% #49 1
Prev: #50
2.3
190,800 16.3%
P
S
1,358,100 $33,721,623 2025 Q3 13F Filing 2026-06-30 2026-08-14
MMSI
Merit Medical S...
Healthcare 0.68% 0.86% #50 19
Prev: #31
2.3
49,200 11.6%
P
S
473,409 $32,826,180 2014 Q1 13F Filing 2026-06-30 2026-08-14
Showing 1-50 of 202 holdings

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