Tag: Financial Data
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IQR vs Isolation Forest vs DBSCAN: 47% False Positive Gap
Compare IQR, Isolation Forest, and DBSCAN for anomaly detection. Discover why false positive rates differ by 47% and which method fits your data.
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Stock Data API Debugging: 5 Silent Failures You’ll Hit
Stock APIs return 200 OK with corrupt data. Detect split adjustments, survivorship bias, and timezone drift before they ruin your backtest.
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Tesla Stock 15-Year Data Analysis: 4 Volatility Regimes
Tesla stock's 15-year distribution shows 4 volatility regimes and fat-tailed returns. Here's what Sharpe ratios won't tell you.
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yfinance vs pandas-datareader: Python Stock Data in 2026
yfinance failed to get ticker? pandas-datareader returning errors? We benchmark speed, reliability, and data quality โ one library was 3x faster for stock price analysis in Python.
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Advanced Feature Engineering for Financial Time-Series
Engineer 15 financial features for time-series ML: RSI, MACD, Bollinger Bands, lag returns. Code templates for pandas and feature validation.
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US Stock Data Pipeline with Python and Yahoo Finance
Speed up S&P 500 data fetching 4x by switching from yfinance to raw Yahoo Finance endpoints. Includes data quality validation and error handling.