12 citations · 27 across the 6 of their papers we have counts for
7 papers
Large Language Models and Stock Investing: Is the Human Factor Required?
Ricardo Crisostomo, Diana Mykhalyuk
This paper investigates whether large language models (LLMs) can generate reliable stock market predictions. We evaluate four state-of-the-art models - ChatGPT, Gemini, DeepSeek, a…
Quantifying firm-level risks from nature deterioration
Ricardo Crisostomo
We estimate the loss of value that companies might suffer from nature overexploitation. We find that global equities shed 26.8% in a scenario of unabated nature decline, while the…
Measuring Transition Risk in Investment Funds
Ricardo Crisostomo
We develop a comprehensive framework to measure the impact of the climate transition on investment portfolios. Our analysis is enriched by including geographical, sectoral, company…
Estimating real-world probabilities: A forward-looking behavioral framework
Ricardo Crisóstomo
We show that disentangling sentiment-induced biases from fundamental expectations significantly improves the accuracy and consistency of probabilistic forecasts. Using data from 19…
Financial density forecasts: A comprehensive comparison of risk-neutral and historical schemes
Ricardo Crisostomo, Lorena Couso
We investigate the forecasting ability of the most commonly used benchmarks in financial economics. We approach the usual caveats of probabilistic forecasts studies -small samples,…
Speed and biases of Fourier-based pricing choices: A numerical analysis
Ricardo Crisóstomo
We compare the CPU effort and pricing biases of seven Fourier-based implementations. Our analyses show that truncation and discretization errors significantly increase as we move a…
An Analysis of the Heston Stochastic Volatility Model: Implementation and Calibration using Matlab
Ricardo Crisostomo
This paper analyses the implementation and calibration of the Heston Stochastic Volatility Model. We first explain how characteristic functions can be used to estimate option price…