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MaciSekander/README.md

Hi, I'm Maci 👋

M.S. Applied Mathematics & Statistics at Columbia University. I build quantitative tools that people actually use: pricing and risk engines, data pipelines and LLM-powered analytics, shipped end to end from model to deployed app.

  • 💼 Summer 2026: Summer Analyst, nonlinear rates desk at Crédit Agricole CIB
  • 🔭 Currently building: open-source estimates of AI-lab revenue from public data
  • 🧠 Interests: rates & volatility, market microstructure, applied ML/LLMs
  • 📫 macisekander10@gmail.com

⭐ Featured projects

Project What it is Stack
Open ARR Tracker · live Open-source estimates of OpenAI and Anthropic annualized revenue from public disclosures and alternative data, with every input and assumption published Python · GitHub Actions · Pages
Tranche Loss Simulator · live Interactive capital-stack stress tester for GPU-backed structured credit TypeScript · Next.js · Recharts
Fed Sentiment Analyzer Scores FOMC minutes and Fed speeches as hawkish or dovish and tracks the Fed's stance over time Python · Transformers · Docker
LLM Projects Pretraining, fine-tuning, DPO, quantization, retrieval and multi-agent notebooks PyTorch · Transformers
Machine Learning & Quant Finance Regression, time series, neural nets, option pricing and CAPM performance attribution scikit-learn · statsmodels · Keras

🛠️ Toolbox

  • Languages: Python · TypeScript · SQL · R
  • Quant: QuantLib · NumPy · pandas · statsmodels · arch · cvxpy
  • ML / LLMs: PyTorch · Hugging Face Transformers · scikit-learn
  • Apps & infra: Streamlit · Next.js · FastAPI · Docker · GitHub Actions · Vercel
  • Data: Bloomberg (xbbg) · Databento · FRED · yfinance

Pinned Loading

  1. fed-sentiment-analyzer fed-sentiment-analyzer Public

    Scores FOMC minutes and Fed speeches as hawkish or dovish and tracks how the Fed's stance shifts over time

    Python

  2. LLM-projects LLM-projects Public

    Hands-on LLM notebooks: pretraining, fine-tuning, DPO, quantization, HNSW retrieval, function calling, ReAct and multi-agent systems

    Jupyter Notebook

  3. Machine-Learning-Projects Machine-Learning-Projects Public

    Machine learning and quant finance notebooks: regression, time series, clustering, neural nets, option pricing and CAPM performance attribution

    Jupyter Notebook

  4. open-arr-tracker open-arr-tracker Public

    Open-source estimates of OpenAI and Anthropic annualized revenue from public disclosures and free alternative data

    Python

  5. tranche-loss-simulator tranche-loss-simulator Public

    Interactive capital-stack stress tester for GPU-backed structured credit: shape tranches, add a residual value guarantee, shock collateral and see who takes the loss

    TypeScript