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lflsphere/README.md

Hi, I'm Louis

Graduate student in Data Science (Quantitative Finance) at Columbia University with a background in Distributed Systems (IP Paris) and Engineering (Telecom SudParis).

I specialize in Quantitative Research, Systematic Asset Allocation, Machine Learning for Finance, and AI-driven Financial Engineering.

📫 Contact: Email | GitHub


📌 Featured Projects & Industry Experience

  • QRT x École Normale Supérieure Datathon: Engineered next-day return direction prediction pipeline.
  • Purged Cross-Validation: Demonstrated Purged-CV + XGBoost outperforming benchmark architectures on held-out leaderboard data.
  • Matrix Overlap Reconstruction: Recovered chronological order of in-sample shuffled dates from 20-day return windows via nearest-neighbor overlap matching.
  • Equity Directional Prediction: Built a stacked LSTM architecture targeting daily directional movement in US Biotech equities.
  • Dollar-Bar Sampling: Implemented de Prado dollar-bar event sampling to stabilize predictions during volatility shocks.
  • Feature Stability & Hardening: Applied distributional moment profiling, winsorization, and z-score recalibration.
  • 13F Theme Timing & Early-Mover Detection: Built a pipeline analyzing 3,000+ hedge fund managers to detect early-mover skill using SEC DERA 13F filings (2013–2026) and 5,200-firm Preqin-to-CRSP mappings.
  • Hierarchical Modeling: Estimated theme conviction via hierarchical random slopes; identified top-quintile managers across ~800 pairs after FDR control.
  • Four-Factor Style Model & Risk Optimization: Developed a multi-asset style model (Carry, Value, Momentum, Quality) across US ETF asset classes (equities, FICC, commodities).
  • Orthogonalization & Signal Isolation: Created cross-sectional Z-scores with sector demeaning, isolated pure style premia via OLS market-premium orthogonalization.
  • Mean-CVaR LP Formulation: Formulated and solved Rockafellar-Uryasev Mean-CVaR Linear Programs (CVXPY/SCS) across a 60-month rolling walk-forward backtest.

⚡ Tse Capital — AI & Macro Quantitative Engineering

  • Macroeconomic LLM Platform: Designed a domain-engineered platform extracting discretionary timing and sizing signals from unstructured macroeconomic publications.
  • Noise Reduction & Anomaly Engine: Constructed a z-score gating engine using log-share deviations (MAD) on macro indicators, reducing signal noise and false positives.

🛠 Tech Stack & Tools

Python PyTorch Scikit-Learn SQL AWS Docker

Pinned Loading

  1. Factor-Driven-CVaR-Portfolio-Optimization Factor-Driven-CVaR-Portfolio-Optimization Public

    Portfolio optimization system minimizing and attributing CVaR using factor analysis to rebalance a multi-asset portfolio

    Python 1

  2. h-genai h-genai Public

    Forked from holygramp/h-genai

    AutoSfill is a GenAI-based tool automating the analysis of financial statements to assess credit risk

    Python 1

  3. starcombo starcombo Public

    DeFi atomic transaction builder for liquidity provisioning trade executions

    TypeScript 1 1

  4. akuna-mm-bot akuna-mm-bot Public

    Automated market maker for binary event contracts tracking relatively valued underlyings

    Python

  5. LSTM-biotech-modeling LSTM-biotech-modeling Public

    Forecasting equity daily returns for US biotech stocks for event-driven strategies

    Jupyter Notebook

  6. QRT-Asset-Allocation-Perf QRT-Asset-Allocation-Perf Public

    Predicting next-day asset allocation returns with tree-based models, built for the QRT challenge. The approach follows Lopez de Prado's methodology to focus on minimal data leakage

    Jupyter Notebook