Oberweis Small-Cap Opportunities Fund (OBSOX) is an MF managed by Independent / Boutique. Its largest position is Lumentum Holdings Inc. (LITE), representing 8.01% of fund assets.
Oberweis Small-Cap Opportunities Fund Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- OBSOX
- Type:
- MF
- Manager:
- Independent / Boutique
- Total Assets:
- —
- Report Date:
- Mar 31, 2026
- Filing Date:
- May 29, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
Lumentum Holdings Inc.
|
8.01% | $160,721,212.00 | 228,700 |
|
-
APPLIED OPTOELECTRONICS, INC.
|
4.51% | $90,606,548.34 | 1,071,126 |
|
-
Credo Technology Group Holding Ltd
|
4.01% | $80,422,934.76 | 856,748 |
|
-
DigitalOcean Holdings, Inc.
|
3.29% | $66,076,334.00 | 770,300 |
|
-
NOVA LTD.
|
2.64% | $53,069,016.00 | 122,200 |
|
-
SharkNinja, Inc.
|
2.64% | $53,013,540.00 | 500,600 |
|
-
DANA Inc
|
2.39% | $48,018,550.00 | 1,427,000 |
|
-
BrightSpring Health Services, Inc.
|
2.18% | $43,751,948.00 | 1,026,800 |
|
-
RAMBUS INC
|
1.87% | $37,560,698.00 | 436,600 |
|
-
SITIME Corp
|
1.82% | $36,536,648.60 | 105,796 |
|
-
MACOM Technology Solutions Holdings, Inc.
|
1.81% | $36,375,066.00 | 163,800 |
|
-
Everus Construction Group, Inc.
|
1.70% | $34,178,370.00 | 289,500 |
|
-
CLEAN HARBORS INC
|
1.67% | $33,547,410.00 | 117,000 |
|
-
Frontdoor, Inc.
|
1.67% | $33,502,668.00 | 633,800 |
|
-
CARPENTER TECHNOLOGY CORP
|
1.57% | $31,571,415.00 | 80,100 |
|
-
LATTICE SEMICONDUCTOR CORP
|
1.53% | $30,790,383.36 | 331,936 |
|
-
SKYWEST INC
|
1.51% | $30,377,364.00 | 330,800 |
|
-
GLOBUS MEDICAL INC
|
1.49% | $29,975,064.00 | 347,900 |
|
-
Arcutis Biotherapeutics, Inc.
|
1.42% | $28,550,008.00 | 1,211,800 |
|
-
Life Time Group Holdings, Inc.
|
1.38% | $27,710,484.00 | 1,028,600 |
|
-
FirstCash Holdings, Inc.
|
1.37% | $27,598,400.00 | 146,800 |
|
-
Dutch Bros Inc.
|
1.34% | $26,880,196.00 | 530,600 |
|
-
Solaris Energy Infrastructure, Inc.
|
1.33% | $26,638,814.00 | 471,400 |
|
-
FLOWSERVE CORP
|
1.29% | $25,802,010.00 | 351,000 |
|
-
FEDERAL SIGNAL CORP /DE/
|
1.28% | $25,694,064.00 | 237,600 |
|
-
Arcosa, Inc.
|
1.26% | $25,197,636.00 | 237,400 |
|
-
OSI SYSTEMS INC
|
1.25% | $25,090,695.00 | 94,500 |
|
-
Core Natural Resources, Inc.
|
1.25% | $25,061,889.00 | 239,300 |
|
-
MERIT MEDICAL SYSTEMS INC
|
1.23% | $24,780,335.00 | 359,500 |
|
-
MERCURY SYSTEMS INC
|
1.21% | $24,322,776.00 | 333,600 |
|
-
Encompass Health Corp
|
1.18% | $23,785,907.00 | 245,900 |
|
-
AAR CORP
|
1.18% | $23,785,658.00 | 217,300 |
|
-
Waystar Holding Corp.
|
1.17% | $23,569,936.00 | 977,600 |
|
-
ICU MEDICAL INC/DE
|
1.10% | $22,149,225.00 | 171,500 |
|
-
LITTELFUSE INC /DE
|
1.07% | $21,548,725.00 | 63,500 |
|
-
Remitly Global, Inc.
|
1.01% | $20,209,599.00 | 1,289,700 |
|
-
ASSURANT, INC.
|
0.99% | $19,798,929.00 | 90,900 |
|
-
Genpact LTD
|
0.96% | $19,329,025.00 | 518,900 |
|
-
LEVI STRAUSS & CO
|
0.95% | $19,098,321.00 | 1,032,900 |
|
-
Ameris Bancorp
|
0.91% | $18,210,665.00 | 233,500 |
|
-
Leonardo DRS, Inc.
|
0.88% | $17,741,220.00 | 398,500 |
|
-
URBAN OUTFITTERS INC
|
0.88% | $17,674,650.00 | 279,000 |
|
-
Indivior Pharmaceuticals, Inc.
|
0.88% | $17,667,457.68 | 579,641 |
|
-
Grand Canyon Education, Inc.
|
0.88% | $17,598,105.00 | 103,500 |
|
-
Matador Resources Co
|
0.87% | $17,513,496.00 | 277,200 |
|
-
VIAVI SOLUTIONS INC.
|
0.87% | $17,495,296.00 | 525,700 |
|
-
Vistance Networks, Inc.
|
0.87% | $17,488,598.40 | 960,912 |
|
-
Chime Financial, Inc.
|
0.86% | $17,209,124.00 | 918,800 |
|
-
iRhythm Holdings, Inc.
|
0.81% | $16,357,572.00 | 138,600 |
|
-
PEGASYSTEMS INC
|
0.79% | $15,934,464.00 | 374,400 |
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