Science towards financial prosperity
Private Investor Alliance (PIA) provides scientific and independent research to help retail investors across the EU choose the safest, and most cost-effective online brokers for their investment journeys.
PIA's evaluations cover over 75 online brokers operating within the EU, analysing more than 250 data points per broker to deliver comprehensive, up-to-date rankings and insights.
Science-First
Using comprehensive and data-based research method to evaluate brokers.
Unbiased
Following a evidence-based process to ensure investors’ needs are put first.
Transparent
Clearly communicating how brokers are assessed and results are interpreted.
Why is choosing the right online broker is critical?
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How do we uniquely compare brokers?
PIA us using 14 Evaluation Categories, carefully chosen based on scientific research, regulatory frameworks, and industry best practices.
Each category addresses a critical question about broker quality and uses multiple criteria to provide a rigorous, transparent, and trustworthy assessment.
Market Trends
Last year saw a positive trend in stock prices, with the US clearly outperforming EU and Dutch stocks.
Read our latest publication on Nagivating the EU Economy in 2025.
AEX Stock Index 
+ 10.26%
Full 2024 Year Return
Europe 600 Index
+ 5.58%
Full 2024 Year Return
S&P 500 US Index
+ 24.47%
Full 2024 Year Return
Deposit Facility Rate
2.00%
June 2025
Latest Publications
Suboptimal investment behavior reported by over 500,000 Dutch households
The design of investment platforms influences investor behavior in powerful ways—often driving excessive risk-taking, frequent trading, and poor diversification, according to the Dutch financial regulator AFM.
Navigating the EU Economy in 2025: Risks, Opportunities, and the Path Ahead
With modest growth, falling inflation, and new global trade tensions, the EU economy in 2025 faces challenges—but also investment opportunities in tech, green energy, and infrastructure.
For further publications please visit our Publication Center 
Frequently Asked Questions
1. Why choosing the right online broker is key to success?
The right broker impacts your investment safety, costs, market access, and experience. A trustworthy broker protects your assets, keeps fees clear, and supports smart investing. The wrong choice can mean higher costs, fewer options, or security risks.
2. How does Private Investor Alliance evaluate online brokers?
We use a scientific method based on 14 categories and 92 criteria, gathering over 250 data points per broker. Our approach relies on academic research, regulations, and best practices to provide transparent, independent assessments. Read more about our Online Broker Evaluation Framework.
3. How do we finance ourselves?
We earn through affiliate partnerships with recommended brokers, a common industry practice. This allows us to offer free, independent research while ensuring our recommendations put investors’ interests first.
4. How can I use the broker rankings to choose the right broker for me?
Rankings show scores across safety, cost, and user experience. Use them to compare brokers based on what matters most to your investment goals, helping you find the best fit. Visit the Compare page for the latest broker rankings.
5. How often are broker rankings updated?
We update rankings monthly to keep information current, reflecting market changes and platform updates for accurate decisions.