— PortfolioBuilder by tradingsea.com

Build
Profitable
Stock Portfolios

A five-stage data-driven workflow — from stock analysis to AI-optimised portfolios. Compare, backtest, rank and decide with confidence.

1
Stock Analysis
2
Build Portfolio
3
Backtest & AI
4
Ranking
5
Final Portfolios
tradingsea.com
PortfolioBuilder dashboard
tradingsea.com
Performance charts
tradingsea.com
Stock ranking
— The Challenge

Stock picking
is hard.
We make it
systematic.

Most investors spend hours sifting through data with no clear process. PortfolioBuilder gives you a structured five-stage workflow powered by fundamentals, performance data and AI.

A clear, structured selection process
PortfolioBuilder replaces guesswork with a systematic five-stage workflow — from raw symbols to final portfolio allocations.
🎯
Clear insight from clear data
Fundamental metrics, performance rankings and weighted scores — all in one place, no spreadsheet juggling required.
Test before you invest
Full backtesting built in — compare Even, Weighted and AI allocations against real historical data before committing capital.

One app.
Five stages.
Better portfolios.

PortfolioBuilder walks you through the entire process — from entering your first stock symbol to comparing AI-optimised final portfolios — in a single coherent workflow.

Intended primarily for US stock markets — New York Stock Exchange and Nasdaq — but also includes easy access to selected large European and Asian companies cross-listed in the US.

5
Workflow stages
AI
Portfolio analysis
5
Timeframes
US+EU+ASIA
Stock coverage
— The Workflow

Five stages to your
best portfolios

Follow the workflow once, iterate as often as you like. Each stage feeds directly into the next.

1
Stock Analysis -start here
Enter stock symbols or load a saved list. Compare 1Y, 6M, 3M, 1M, 1W performance. View fundamentals. Save your best candidates.
2
Build Portfolio -you can start here too
Select Long, Medium or Short term strategy. Apply your own fundamental data filters to narrow down to your Top 10 best performers. Calculate and save.
3
Backtest & Optimise
Test your portfolio historically. Compare Even, Weighted and AI allocations. Analyse CAGR, Sharpe Ratio and Drawdown. Get a comprehensive AI portfolio analysis with suggestions for possible improvements.
4
Portfolio Ranking
Compare all your saved portfolios across every timeframe. Rate them. Identify your consistent winners using multi-portfolio performance charts.
5
Final Portfolios
See your top 4 portfolios for 1Y, 6M and 3M with exact stock allocations. Click any symbol for full fundamental data. Create and save report and lock portfolio to follow and chart its progress. Your decision dashboard.
Stock Analysis
AI Portfolio Analysis
Portfolio Ranking
— What you get

Built for
serious
investors

Every feature in PortfolioBuilder is designed to give you a data edge — not just pretty charts. The decision making stays in your hands.

🤖
AI Portfolio Analysis
Deep AI-generated insights on performance, rebalancing suggestions, diversification and risk — for every saved portfolio.
📈
Multi-Timeframe Backtesting
Test portfolios across 1W to 1Y. Compare allocation strategies with real equity curves and CAGR, Sharpe Ratio and Drawdown metrics.
⚖️
Weighted Fundamental Scoring
Stocks ranked by a weighted score combining PE, PEG, Market Cap, Revenue and multi-timeframe returns.
🌍
US, EU + Asian Stock Coverage
Major Asian and European companies cross-listed on NYSE, NASDAQ and AMEX. One-click to add to your analysis.
🏆
Portfolio Ranking & Star Ratings
Compare unlimited portfolios side-by-side. Star-rate your winners. Top-rated portfolios get green markers in the ranking table.
tradingsea.com — Optimisation & Backtest
Optimisation and backtest
AI-Optimised Returns
tradingsea.com — EU → US, ASIA → US Symbols
EU to US symbols
— Market coverage

US markets
first. Europe/ASIA
included.

PortfolioBuilder is built primarily for NYSE and Nasdaq — the world's largest and most liquid stock markets. It also includes a curated EU → US, ASIA → US symbol list so you can bring major non US stocks into the same workflow.

NYSE & Nasdaq — the primary focus
Thousands of US-listed stocks analysable with full performance data and fundamental metrics. Add your own favourite lists of stocks to the PortfolioBuilder database and reuse them any time.
Selected large European and Asian stocks
Blue chips like ASML, Shell, AstraZeneca, Unilever, ENI, BHP, Rio Tinto, Taiwan Semiconductor, Toyota accessible via their US-listed symbols — one click to add to your analysis.
Main ETFs supported alongside stocks
Compare ETFs and individual stocks side by side using the same weighted scoring and ranking system.

Ready to build
your best portfolio?

Start with your first stock list today. Follow the five-stage workflow. Let AI help you streamline your best allocation. No installation needed.

Launch PortfolioBuilder →
tradingsea.com · Free to use
Disclaimer: This is not investment advice. tradingsea.com is not responsible for any investments made based on this application. Data shown may contain errors. Always do your own research and consult a qualified financial advisor before making investment decisions.

Get in touch

Questions, suggestions or feedback about PortfolioBuilder? We would love to hear from you. Send a message below or reach us directly by email.

✓  Thank you! We will get back to you shortly.