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Baron Opportunity Fund

Symbol BIOIXCUSIP: 068278886
Symbol BIOIXCUSIP: 068278886
A
All-Cap Growth

Nav

$55.93

Daily Change -$0.04 (-0.07%)
As of 03/11/2026

Net Assets

$1.80 B

As of 12/31/2025

Morningstar Rating™

As of 02/28/2026

Morningstar Medalist Rating™

medal Logo

SILVER

Inception date

02/29/2000

Prices & Performance

PricesAs of 03/11/2026

NAVDaily Change ($)Daily Change (%)MTDQTDYTD
$55.93-$0.04-0.07%1.21%-3.78%-3.78%
NAV$55.93
Daily Change ($)-$0.04
Daily Change (%)-0.07%
MTD1.21%
QTD-3.78%
YTD-3.78%

PerformanceAs of 12/31/2025

Portfolio or IndexQTD1YTD11 Year3 Years5 Years10 YearsSince Inception 02/29/2000
BIOIX - Baron Opportunity Fund - I4.63%19.73%19.73%36.05%10.08%20.15%10.60%
Russell 3000 Growth Index1.14%18.15%18.15%30.25%14.59%17.59%8.07%
S&P 500 Index2.66%17.88%17.88%23.01%14.42%14.82%8.42%

Performance InformationAs of 12/31/2025

Performance statistics3 Years5 Years10 Years
Standard Deviation (%)19.3822.4821.08
Sharpe Ratio1.600.300.85
Alpha (%)-1.00-5.170.87
Beta1.221.141.11
R-Squared (%)88.1085.5384.11
Tracking Error (%)7.468.918.64
Information Ratio0.78-0.510.30
Upside Capture (%)116.9797.76111.46
Downside Capture (%)116.43116.40108.97
Except for Standard Deviation and Sharpe Ratio, the performance based-characteristics above were calculated relative to the Baron Opportunity Fund's(BIOIX) benchmark (Russell 3000 Growth Index). Performance statistics for additional periods will be provided on request. Source FactSet: SPAR.

Risk & Return09/30/2022 - 09/30/2025

Portfolio Holdings & Characteristics

HoldingsAs of 02/28/2026

HoldingSector% of Net Assets
Space Exploration Technologies Corp.
Space Exploration Technologies Corp. (SpaceX) designs, manufactures, and launches rockets, satellites, and spacecrafts. Its ultimate goal is to make humanity multi-planetary. Products include reusable orbital launch offerings and a broadband service leveraging its satellite constellation, Starlink.
We believe SpaceX will continue to drive down the cost of space launches and capture market share with its unique, reliable, and improving reusable launch capabilities. As costs decline, we also expect demand for access to space to increase. By leveraging its launch cost leadership, vertical integration, and innovative design approach, SpaceX has an advantage in building and operating its rapidly expanding satellite-based broadband services, creating an even more attractive growth profile for the company.
Industrials14.7%
NVIDIA Corporation
NVIDIA Corporation (NVDA) sells semiconductors, systems, and software for accelerated computing, gaming, and generative AI.
Computing demand has been doubling every one to two years, driven by electrification, digitization, and recent advancements in AI, yet supply growth has decelerated dramatically due to the slowdown in Moore's law. NVIDIA’s accelerated computing architecture enables continued growth in computing capacity through parallelization. We are at the tipping point of a new era in computing, with NVIDIA at its epicenter as generative AI adoption grows. With leading market share in gaming, data centers, and autonomous machines, we think NVIDIA is well positioned for long-term growth.
Information Technology12.9%
Broadcom Inc.
Broadcom Inc. (AVGO) designs, develops, and supplies a wide range of semiconductor and infrastructure software solutions. Its semiconductor devices serve broadband, networking, wireless, storage, and industrial markets, while its software offerings focus on operational efficiency tools for large enterprises.
Broadcom’s semiconductor portfolio is reaching an inflection point, driven by its AI solutions in networking and custom compute. We expect Broadcom to tap into most of the $75 billion serviceable addressable market in AI across its three largest customers by 2027 and to grow VMware at a high-teens rate over the next few years. The rest of Broadcom’s semiconductor business is recovering, and we expect other software segments to grow at a mid-single-digit rate. The company has best-in-class margins and cash flow, which it returns to shareholders.
Information Technology6.2%
Amazon.com, Inc.
Amazon.com, Inc. (AMZN) is an e-commerce pioneer, innovator, and market share leader with a relentless focus on providing value and convenience to its customers. Amazon also operates the industry-leading cloud infrastructure business Amazon Web Services (AWS). 
Amazon's market share of U.S. online retail sales is around 40%, while its share of global retail sales is less than 5%. Amazon has many avenues for revenue growth, including consumer staples, international expansion, grocery, digital media offerings, private label, pharmacy and health care services, advertising, and a better shopping experience powered by generative AI. Amazon also represents an opportunity to invest in the secular growth of cloud computing and the adoption of enterprise AI through AWS — a large, fast-growing, and margin-accretive part of the business. 
Consumer Discretionary6.0%
Tesla, Inc.
Tesla, Inc. (TSLA) manufactures electric vehicles including sedans, SUVs/CUVs, a pickup truck, and a semi-truck. The company is also ramping up internal battery cell production, energy solutions, robotics offerings such as full self-driving and humanoids, and renewable energy generation and storage solutions.
We expect Tesla to continue growing its automotive business as it benefits from the secular adoption of electric vehicles, vertical integration, technological innovation, and cost advantages. The company is also leveraging its core automotive technologies to address the rapidly growing energy storage segment. In addition, Tesla's software and AI expertise is broadening the industrial opportunity to large and profitable revenue avenues that were previously locked in the legacy vehicle architecture, such as autonomous driving, robotics, insurance, and other AI use cases.
Consumer Discretionary5.7%
Meta Platforms, Inc.
Meta Platforms, Inc. (META) owns Facebook, the world's largest social network, with over 3 billion monthly and over 2 billion daily active users. Instagram, Messenger, WhatsApp, and Oculus are also part of the Meta Platforms network, with over 3.4 billion total daily unique users across Meta products.
Meta owns unique social platforms with users that continue to demonstrate stickiness and high engagement. Advertisers want to be where users are, and Meta's ability to analyze, target, and show clear, demonstrable, and rising returns on investment makes the platform particularly attractive. We believe the company has significant room to further monetize its vast customer base, especially internationally. In addition, we see significant positive optionality from monetization opportunities in generative AI features, video, WhatsApp, business messaging, and smart glasses.
Communication Services4.3%
Spotify Technology S.A.
Spotify Technology S.A. (SPOT) is the world's leading music streaming service, with approximately 40% market share. The company monetizes through several tiers of subscriptions, advertising, and miscellaneous a la carte pricing. 
With over 281 million paying subscribers, Spotify has created a two-sided marketplace where creators can monetize their work and consumers can stream music. Longer term, we expect the company to grow to over 1 billion subscribers (from 713 million today) and improve margins materially through advertising, its artist promotions marketplace, audiobooks, and improved cost discipline. We expect Spotify to continually improve its value proposition through additional features like video, and monetize this value through more optimized pricing tiers like Super Premium.
Communication Services4.0%
Alphabet Inc.
Alphabet Inc. (GOOGL) is the parent of Google, the world's most dominant online search provider. Other services and products include display advertising, Android, Chrome, Google Cloud, Google Maps, Google Play, and YouTube. Its Other Bets segment consists of businesses such as Waymo, CapitalG, and Verily.
Alphabet has been the largest beneficiary of a secular shift in advertising from traditional media to online and mobile. The company has processed and indexed more data than any other company, leveraging its large datasets to improve its products and expand into adjacent markets. Subsidiaries Google Cloud and YouTube give Alphabet exposure to the transition toward cloud computing and connected TV, while Waymo remains a leader in autonomous driving. Alphabet has tremendous scale, distribution, and talent. We are monitoring how AI could disrupt or create new opportunities.
Communication Services3.8%
Eli Lilly and Company
Eli Lilly and Company (LLY) is a multinational pharmaceutical company developing drugs in diabetes, oncology, immunology, and neuroscience. The company's top-selling drugs include Mounjaro, Zepbound, Trulicity, Humalog, Alimta, Taltz, Humulin, and Jardiance.
We are investors in Lilly given its focus on industry-leading growth categories like diabetes, obesity, and oncology. Leading GLP-1 drugs Mounjaro and Zepbound offer superb blood sugar control for diabetics, can drive 20%-plus weight loss in obese patients, and are likely improve cardiovascular outcomes in both diabetic and non-diabetic obese patients. We think GLP-1 drugs will become the standard of care for both diabetes and obesity, representing a $150 billion-plus market. We believe Lilly has the potential to double revenues and achieve double-digit EPS growth by 2030.
Health Care3.7%
Taiwan Semiconductor Manufacturing Company Limited
Taiwan Semiconductor Manufacturing Company Limited (TSM), known as TSMC, is the world's largest independent semiconductor foundry, manufacturing chips on behalf of other companies.
TSMC is the dominant force in leading-edge semiconductor foundry manufacturing, as it benefits from economies of scale and a superior cost structure. The company's successful track record of deploying new technology faster than competitors helps it maintain market share and pricing power. We believe TSMC’s investments in advanced nodes will strengthen its market leadership and support long-term profitability.
Information Technology2.7%
Total
Total
64.0%
Top Ten Fund Holdings based on net assets. Portfolio holdings may change over time.
Portfolio holdings are subject to change. Current and future portfolio holdings are subject to risk.

Contributors / DetractorsQuarterly as of 12/31/2025

Top ContributorsAverage WeightContribution
Space Exploration Technologies Corp.5.71%4.42%
X.AI Holdings Corp.1.88%1.48%
Eli Lilly and Company3.15%1.05%
Exact Sciences Corporation1.03%0.90%
Broadcom Inc.6.70%0.45%
Source: FactSet PA.

GICS Sector BreakdownAs of 02/28/2026

Sector

Information Technology

40.1%

Industrials

17.9%

Consumer Discretionary

12.8%

Communication Services

12.1%

Health Care

10.9%

Financials

4.5%

Real Estate

1.2%

Unclassified

0.2%

Cash & Cash Equivalents

0.2%

Sub-Industry

02/28/2026
Semiconductors24.30%
Aerospace & Defense15.90%
Interactive Media & Services8.10%
Broadline Retail 6.00%
Automobile Manufacturers5.70%
Systems Software4.80%
Application Software4.50%
Movies & Entertainment4.00%
Biotechnology3.80%
Pharmaceuticals3.70%
Transaction & Payment Processing Services 3.60%
Internet Services & Infrastructure3.10%
Communications Equipment1.30%
Health Care Equipment1.20%
Real Estate Services 1.20%
0510152025
Semiconductors24.30%
Aerospace & Defense15.90%
Interactive Media & Services8.10%
Broadline Retail 6.00%
Automobile Manufacturers5.70%
Systems Software4.80%
Application Software4.50%
Movies & Entertainment4.00%
Biotechnology3.80%
Pharmaceuticals3.70%
Transaction & Payment Processing Services 3.60%
Internet Services & Infrastructure3.10%
Communications Equipment1.30%
Health Care Equipment1.20%
Real Estate Services 1.20%
0510152025

Portfolio CharacteristicsAs of 12/31/2025

DescriptionBaron Opportunity FundRussell 3000 Growth Index
Inception DateFebruary 29, 2000
Net Assets$1.80 billion
# of Issuers / % of Net Assets46/99.0%
Turnover (3 Year Average)27.38%
Active Share55.4%
Median Market Cap$46.27 billion$2.21 billion
Weighted Average Market Cap$1.44 trillion$2.02 trillion
Expense Ratio1.05%
As of FYE Current Expense Ratio Date01/28/2025
EPS Growth (3-5 year forecast)18.7%15.2%
Price/Earnings Ratio (trailing 12-month)42.0x35.6x
Price/Book Ratio10.8x9.1x
Price/Sales Ratio9.2x4.7x
The Net Assets include all share classes combined.
Price/Book Ratio and Price/Sales Ratio are calculated using the Weighted Harmonic Average. Source: FactSet PA. Internal valuation metrics may differ.

Distributions

Record DateEx DatePayable DateIncomeReturn of CapitalShort-Term Capital GainLong-Term Capital GainTotalRe-Invest NAVCalendar-Year Return
12/15/202512/16/202512/17/2025$0.0000$0.0000$0.0000$2.2870$2.2870$57.9019.73%
12/16/202412/17/202412/18/2024$0.0000$0.0000$0.0000$2.3307$2.3307$52.9240.25%
11/22/202111/23/202111/24/2021$0.0000$0.0000$2.0076$1.5956$3.6032$45.3912.29%
11/23/202011/24/202011/25/2020$0.0000$0.0000$0.1878$2.5970$2.7848$37.3889.28%
11/25/201911/26/201911/27/2019$0.0000$0.0000$0.0000$1.6760$1.6760$23.46
For estimated distributions, visit the Tax Center