William Blair Large Cap Growth Fund

High-conviction U.S. large-cap growth investing in structurally advantaged companies, with stock selection as the primary return driver and moderate tracking error.$1.8B AUM6 published ideas

William Blair Large Cap Growth Fund invests primarily in large U.S. growth companies whose long-term prospects the manager believes are underappreciated. The strategy seeks structurally advantaged businesses, keeps sector and market-cap exposure relatively benchmark-aware, and aims for a high-conviction, lower-turnover portfolio.

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Ideas from William Blair Large Cap Growth Fund

LongAMDJun 2026

Advanced Micro Devices

AMD is the second-largest GPU supplier behind NVIDIA and is positioned across both server CPUs and AI accelerators. Quarterly results showed accelerating Data Center momentum…

LongUNHJun 2026

UnitedHealth Group

UnitedHealth combines insurance through UnitedHealthcare with healthcare services through Optum, creating an integrated platform for value-based care. Quarterly revenue beat…

LongSTXJun 2026

Seagate Technology

Seagate is a leading HDD manufacturer in a three-player oligopoly and supplies high-capacity nearline drives used for data-center storage. The fund initiated the position because…

LongINTUJun 2026

Intuit

Intuit remains a leading software provider in tax preparation, personal finance and small-business management, but the fund has become more selective because of AI-related…

LongCGJun 2026

Carlyle Group

Carlyle is an alternative asset manager with exposure to corporate private equity, real assets and credit. Shares declined on redemption concerns and a mixed earnings report…

LongNOWJun 2026

ServiceNow

ServiceNow provides cloud-based workflow and business-management software and remains strategically embedded in customer processes. The stock has been pressured by fears that AI…

Letters covered

  • Large Cap Growth Fund Quarterly ReviewJune 30, 2026

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