Fernando Ruiz

Quantitative Finance
Sustainability & Portfolio Research

ESG Portfolio Manager at Santander CIB. Building quantitative frameworks for portfolio alignment, factor models, and tactical asset allocation. Personal research at the intersection of climate finance, asset allocation, and machine learning.

PCAF / PACTA Markowitz Black-Litterman Factor Investing Python CAIA
At a glance
14+
Projects
7+
Years research
5
Asset classes
3
ESG frameworks
Career
2022→ ESG Portfolio Mgmt · Santander CIB
2020 Santander Analytics
2016 BBVA Asset Management
2014 Afi — Analistas Financieros
01

About

I'm an ESG Portfolio Manager at Santander Corporate & Investment Banking (SCIB), where I work on portfolio alignment frameworks (PCAF, PACTA, and NZBA), and quantitative credit strategies methodologies.

This site collects my personal research in quantitative portfolio management, systematic factor investing, and sustainable finance — spanning classical theory (Markowitz, CAPM, Black-Litterman) and current applied work in Python, machine learning, and sustainable data engineering.

Previously at BBVA Asset Management and Afi. Based in Madrid.

ESG & Climate
PCAF PACTA NZBA Basel ITR Carbon intensity
Quantitative Methods
Markowitz MVO Black-Litterman Factor models Regime detection Robust covariance Backtesting
Tools & Stack
Python pandas / numpy scikit-learn React Excel / VBA Bloomberg
02

Projects

⚖️
Active
Markowitz-Van Dijk Rebalancing
Interactive React app implementing the MvD heuristic for portfolio rebalancing. Transaction cost decomposition, adjustable parameters, efficient frontier visualization.
React MVO Transaction costs
📊
Active
Capital Market Assumptions
Multi-tab Excel parameter file for 10 asset classes across 5 macro scenarios: Stable Market, Bull, Bear, Energy Crisis, and Covid-like Shock.
Excel Asset allocation Scenarios
🧩
In progress
Factor Investing — STOXX 600
Systematic stock selection framework for European equities. Factor construction for Value, Momentum, Quality, Size, Low Vol, Dividend Yield and FCF Yield with winsorize/Z-score pipeline.
Python STOXX 600 Factor models
🤖
Active
ML Portfolio Optimization
Python scripts for ML-driven portfolio optimization: market regime detection, robust covariance estimation (Ledoit-Wolf), and full backtesting framework with risk metrics.
Python scikit-learn Backtesting
🌿
Active
Stegra (H2 Green Steel) Analysis
Full company analysis: value chain, production process, CO₂ footprint, PCAF/PACTA alignment, and production ramp-up table. McKinsey-style deck format.
PCAF PACTA Green Steel ESG
🌡️
In progress
ESG Portfolio Alignment Framework
Portfolio alignment framework covering PCAF, PACTA, NZBA and Basel. Implied Temperature Rise (ITR), carbon intensity metrics, and sectoral decarbonization pathways.
PCAF NZBA ITR Basilea
📈
Active
Tactical Asset Allocation Model
Quantitative TAA model combining macro and momentum signals for dynamic weight adjustments across asset classes. Regime-conditional allocation rules.
Python TAA Macro signals
🗺️
In progress
GDP Data Agent
Automated macro tracker for GDP evolution across the US, Germany, UK, Italy, France, and Spain. API-driven data pipeline with tabular visualization and alerts.
Python API Macro
🔍
Active
Morningstar Fund Scraper
Fund data extraction (returns, volatility, Sharpe, SFDR ratings) via Morningstar's internal JSON API endpoints. Session cookie handling and browser-mimicking headers.
Python Scraping SFDR
📋
Active
Market Report Summarizer
Multi-report analysis tool that tabulates impact on economic and financial variables across research from different banks and research houses into a single structured dashboard.
Python NLP Research
03

Published research

2018
Heuristic algorithms for portfolio optimization
Simulated Annealing · Metaheuristics · Comparison with classical MVO
PDF ↗
2018
Bayesian asset allocation: Black-Litterman & Copula Opinion Pooling
Black-Litterman · COP · Investor views · Prior distributions
PDF ↗
2018
Downside risk measures & Omega Ratio
Safety First · Semivariance · CVaR · Higher moments · Omega Ratio
PDF ↗
2018
Portfolio construction techniques
Risk profiling · Total Return AA · Core-Satellite · Hedge funds · Benchmark-relative
PDF ↗
2017
Modern Portfolio Theory — complete reference
Markowitz · Market model · CAPM · Empirical evidence · Fama-French anomalies
PDF ↗
2017
Investment management process
Investor profiling · Asset Allocation · Security selection · Execution · Monitoring
PDF ↗
04

Contact

Interested in quantitative finance, ESG frameworks, or portfolio research? Feel free to reach out — I'm always open to discussing ideas, collaborations, or just talking quant.