Osterweis Opportunity Fund

Small-cap growth equity strategy focused on fundamental security selection and sustainable growth, with active rotation away from crowded areas.$360M AUM6 published ideas

Osterweis Opportunity Fund is a small-cap growth strategy benchmarked against the Russell 2000 Growth Index. Security selection is a central driver of returns, with significant exposure to technology, industrials, health care and consumer discretionary companies. Following exceptional gains in AI-linked holdings, the managers have been taking profits and reallocating toward less-crowded opportunities with more sustainable growth rates.

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Ideas from Osterweis Opportunity Fund

LongHNGEJul 2026

Hinge Health, Inc.

Hinge Health provides virtual physical therapy and produced exceptional recent financial results. Second-quarter billings increased 52% year over year due to both new members and…

LongLTHJul 2026

Life Time Group Holdings, Inc.

Life Time operates high-end health clubs and has consistently beaten and raised estimates during the fund's roughly year-and-a-half ownership period. The fund believed a…

LongSMTCJul 2026

Semtech Corporation

Semtech provides high-performance analog and mixed-signal semiconductors whose connectivity products are becoming increasingly important in AI data centers. The company is seeing…

LongCDNLJul 2026

Cardinal Infrastructure Group Inc.

Cardinal Infrastructure delivered strong first-quarter results, including 64% organic growth, and announced its first data-center win. The company also completed a well-priced…

LongSITMJul 2026

SiTime Corporation

SiTime is the leading pure-play precision-timing semiconductor company. Adoption is increasing in AI data centers as well as applications such as Apple's iPhone, while its most…

LongFSVJul 2026

FirstService Corporation

FirstService experienced a difficult second quarter because its roofing and residential closet businesses remained soft. The fund expects organic growth to improve during the…

Letters covered

  • Q2 Small Cap Growth Update: AI Investment Pushes Market HigherJuly 22, 2026

Source PDFs are not republished here; only extracted ideas and quotes.