BDE Score vs Yahoo Finance API: Open Source Stock Analysis Compared

When building trading tools or financial dashboards, choosing the right data source is critical. Let’s compare BDE Score™ with Yahoo Finance alternatives like yfinance.

Coverage Comparison

Feature	BDE Score™	yfinance
US Stocks	25 (curated)	8000+
HK Stocks	26	2500+
China A-shares	23	Limited
Multi-factor scoring	✅ Built-in	❌ Raw data only
Risk analysis	✅ VaR, drawdown	❌ Manual
Sentiment analysis	✅ News/social	❌
EU AI Act compliance	✅ Art.50 labels	❌
Zero registration	✅	✅
shields.io badges	✅ Dynamic	❌
GitHub Action	✅ Built-in	❌
USDC payment	✅ Base Chain	❌

When to Use BDE Score

Best for:

Quick multi-market screening (74 curated stocks)
Multi-factor composite scoring out of the box
Adding live badges to README/docs
EU AI Act compliant applications
CI/CD integration via GitHub Action

# One command to get all scores
curl https://atlantic-remains-atomic-floor.trycloudflare.com/api/analyze?market=ALL

When to Use yfinance

Best for:

Full US market coverage (8000+ stocks)
Historical data downloads
Custom analysis pipelines
Integration with pandas ecosystem

from openbb import obb
data = obb.equity.price.historical("AAPL")

The Best of Both Worlds

Many developers use BDE Score for pre-screening and yfinance/OpenBB for deep analysis:

import requests
from openbb import obb

# Stage 1: Quick screening with BDE Score
bde = requests.get(
    "https://atlantic-remains-atomic-floor.trycloudflare.com/api/analyze?market=ALL"
).json()
top_picks = sorted(bde["results"], key=lambda x: x["composite_score"], reverse=True)[:5]

# Stage 2: Deep dive with OpenBB
for pick in top_picks:
    tools = obb.equity.profile(pick["symbol"])
    print(f"{pick['symbol']}: BDE={pick['composite_score']}, Sector={tools}")

Try BDE Score Now

GitHub: https://github.com/hbhqq9/bde-score
Live API: https://atlantic-remains-atomic-floor.trycloudflare.com/api/analyze?market=ALL
Docs: https://atlantic-remains-atomic-floor.trycloudflare.com/docs

MIT licensed. Not investment advice.