BIOPX — Baron Opportunity Fund
Data updated: 2026-05-22
BIOPX — Baron Opportunity Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Information Technology Equity · $1.62B AUM · 1.31% expense ratio · 23.6% 1-yr return. From SEC regulatory filings.
BIOPX Fund Overview
BIOPX — Baron Opportunity Fund is a US mutual fund managed by BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), categorised as United States Information Technology Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)
- Category: United States Information Technology Equity
- Assets under management: $1.62B
- 1-year return: 23.6%
- Ticker: BIOPX
- SEC CIK: 0000810902
- SEC series ID: S000000585
- Share class ID: C000001638
BIOPX Holdings
Top 10 holdings of Baron Opportunity Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NVIDIA Corp | 13.26% |
| Space Exploration Technologies | 6.61% |
| Broadcom Inc | 6.28% |
| Amazon.com Inc | 6.25% |
| Space Exploration Tech Corp. | 6.03% |
| Tesla Inc | 5.41% |
| Spotify Technology SA | 3.97% |
| Meta Platforms Inc | 3.86% |
| Alphabet Inc | 3.80% |
| Eli Lilly & Co | 3.41% |
BIOPX Portfolio Allocation
Asset-class allocation of Baron Opportunity Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.0% |
BIOPX Performance
Total returns for BIOPX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -8.9% |
| 1 year | 23.6% |
| 3 years (annualised) | 24.5% |
| 5 years (annualised) | 7.6% |
BIOPX Risk Information
Risk metrics for BIOPX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 16.5%
BIOPX Costs and Fees
BIOPX costs about $131 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.31%
- Gross expense ratio: 1.31%
- Portfolio turnover: 30%
- Brokerage commissions: 1.63 bps of average net assets (SEC N-CEN)
BIOPX Cashflows
Over the 12 months to 2026-03, Baron Opportunity Fund had net inflows of $18.37M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$5.49M |
| 2026-02 | −$11.08M |
| 2026-01 | −$3.61M |
| 2025-12 | $60.32M |
| 2025-11 | −$16.03M |
| 2025-10 | −$14.75M |
BIOPX Debt Constituents
No individual debt constituents are reported in Baron Opportunity Fund's latest SEC N-PORT filing.
BIOPX Prospectus and SEC Filings
Official Baron Opportunity Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Information Technology Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.