Enhancing Financial Market Accessibility Through Open Data and Interval-Valued FuzzySets

M. Dáder-Suárez, E. Torres-Manzanera, S. Montes

The reuse of economic open data enables access to high‑quality financial asset-management services. In the context of portfolio construction, European regulations provide information that remains largely underutilized by small savers or retail investors. Processing these datasets using interval-valued fuzzy sets allows effective management of the inherent fluctuations and uncertainties characteristic of capital markets. This study adapts the statistical method of Principal Component Analysis to this specific context.
The results demonstrate that the consensus portfolio constructed through these techniques outperforms several individual funds analyzed, achieving a 12%-16% return over the reference period. However, it stands as a critical observation that some professional fund managers attained returns exceeding 35% -more than double the performance of the proposed strategy.

Palabras clave: Interval-Valued Fuzzy Sets, Admissible Orders, Portfolio Optimization, Ranking Aggregation

GT Decisión Multicriterio I
2 de septiembre de 2026  12:40
Aula 28

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