Oberweis Asset Management Inc Portfolio Holdings

Oberweis Asset Management Inc

  • $2.39 Billion
  • Q3 2025

Oberweis Asset Management Inc has filed its 13F form on November 17, 2025 for Q3 2025 where it was disclosed a total value porftolio of $2.39 Billion distributed in 183 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Credo Technology Group Holding LTD with a value of $93.8M, Lumentum Holdings Inc. with a value of $53.5M, Rambus Inc with a value of $52.9M, Ambarella Inc with a value of $50.4M, and Applied Optoelectronics, Inc. with a value of $48.2M.

Examining the 13F form we can see an increase of $263M in the current position value, from $2.13B to 2.39B.

Oberweis Asset Management Inc is based out at Lisle, IL

Below you can find more details about Oberweis Asset Management Inc portfolio as well as his latest detailed transactions.

Portfolio value $2.39 Billion
Technology: $1.01 Billion
Industrials: $443 Million
Healthcare: $308 Million
Consumer Cyclical: $257 Million
Financial Services: $113 Million
Consumer Defensive: $107 Million
Communication Services: $91.1 Million
Energy: $36 Million
Other: $23.2 Million

Stock Holdings Table

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$1.95B
$9.14 Million 0.38% of portfolio
545,600
Q1 2025 Added 16.93%
$1.84B
$8.97 Million 0.37% of portfolio
211,800
Q2 2025 Added 11.24%
$712M
$8.75 Million 0.37% of portfolio
218,806
Q3 2025 Added 34.81%
$1.31B
$8.56 Million 0.36% of portfolio
194,400
Q2 2025 Added 1.89%
$9.75B
$8.62 Million 0.36% of portfolio
117,580
Q3 2025 Reduced 35.47%
$2.66B
$8.35 Million 0.35% of portfolio
45,700
Q4 2024 Added 3.86%
$3.29B
$8.28 Million 0.35% of portfolio
484,000
Q3 2025 New
$745M
$8.11 Million 0.34% of portfolio
83,700
Q2 2025 Reduced 24.46%
$1.83B
$8.1 Million 0.34% of portfolio
60,200
Q2 2025 Added 9.06%
$1.38B
$7.88 Million 0.33% of portfolio
266,000
Q3 2025 New
$3.12B
$7.62 Million 0.32% of portfolio
134,500
Q3 2025 Reduced 22.07%
$3.5B
$7.68 Million 0.32% of portfolio
414,550
Q3 2025 Added 4.69%
$518M
$7.73 Million 0.32% of portfolio
238,200
Q2 2025 Added 24.78%
$506M
$7.58 Million 0.32% of portfolio
271,100
Q3 2025 Added 10.97%
$2.14B
$7.39 Million 0.31% of portfolio
196,000
Q2 2025 Added 9.87%
$2.19B
$7.41 Million 0.31% of portfolio
44,600
Q3 2025 Reduced 23.89%
$867M
$7.16 Million 0.3% of portfolio
948,400
Q2 2025 New
$1.3B
$7.28 Million 0.3% of portfolio
34,900
Q3 2025 Added 83.68%
$1.04B
$7.28 Million 0.3% of portfolio
274,700
Q4 2024 Added 3.78%
$5.16B
$6.98 Million 0.29% of portfolio
42,100
Q2 2025 Reduced 42.09%
$563M
$7.02 Million 0.29% of portfolio
301,600
Q3 2025 Added 59.07%
$2.55B
$6.88 Million 0.29% of portfolio
123,500
Q4 2024 Added 4.04%
$2.07B
$6.7 Million 0.28% of portfolio
461,122
Q3 2025 New
$403M
$6.6 Million 0.28% of portfolio
985,950
Q3 2025 Added 1.08%
$1.24B
$6.57 Million 0.27% of portfolio
561,000
Q3 2025 New
$734M
$6.19 Million 0.26% of portfolio
91,600
Q3 2025 New
$3.44B
$5.94 Million 0.25% of portfolio
40,500
Q2 2024 Reduced 17.68%
$1B
$5.85 Million 0.24% of portfolio
328,100
Q2 2025 Added 9.18%
$1.53B
$5.41 Million 0.23% of portfolio
153,500
Q3 2025 New
$791M
$5.47 Million 0.23% of portfolio
97,100
Q2 2025 Added 41.96%
$789M
$5.21 Million 0.22% of portfolio
100,300
Q2 2025 Added 17.58%
$181M
$5.33 Million 0.22% of portfolio
1,068,800
Q1 2025 Added 97.16%
$1.47B
$5.17 Million 0.22% of portfolio
435,500
Q3 2025 New
$65.5M
$5 Million 0.21% of portfolio
538,700
Q2 2024 Added 50.56%
$1.51B
$5.09 Million 0.21% of portfolio
82,700
Q2 2025 Added 12.52%
$442M
$4.93 Million 0.21% of portfolio
366,900
Q2 2025 Added 1.92%
$622M
$5.09 Million 0.21% of portfolio
132,732
Q2 2025 New
$2.41B
$4.45 Million 0.19% of portfolio
296,300
Q2 2024 Added 11.06%
$1.18B
$4.22 Million 0.18% of portfolio
90,900
Q1 2025 Added 8.99%
$428M
$4.2 Million 0.18% of portfolio
192,360
Q3 2025 New
$495M
$3.97 Million 0.17% of portfolio
169,200
Q1 2025 New
$453M
$4.03 Million 0.17% of portfolio
601,714
Q4 2024 Added 17.77%
$634M
$3.83 Million 0.16% of portfolio
299,400
Q2 2025 Added 12.56%
$79.1B
$3.04 Million 0.13% of portfolio
17,000
Q3 2025 Added 23.19%
$320M
$2.86 Million 0.12% of portfolio
221,075
Q4 2024 Added 4.74%
$86.4B
$2.6 Million 0.11% of portfolio
7,400
Q2 2025 Added 1.37%
$123B
$1.95 Million 0.08% of portfolio
2,800
Q3 2025 Reduced 54.84%
$24.4B
$1.91 Million 0.08% of portfolio
11,000
Q3 2025 Reduced 3.51%
$0
$1.45 Million 0.06% of portfolio
2,173
Q3 2025 Added 0.23%

Summary

  • Portfolio
  • No. of Stocks 183
  • Current Value $2.39 Billion
  • Prior Value $2.13 Billion
  • Filing
  • Period Q3 2025
  • Filing Date November 17, 2025
  • Form Type 13F-HR
  • Activity in Q3 2025
  • New Purchases 23 stocks
  • Additional Purchases 43 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 40 stocks
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