Financial markets are complex and constantly evolving systems, influenced by a multitude of global macroeconomic factors. Among these, geopolitical shocks, monetary policy decisions (such as central bank interest rate changes), and structural changes in consumption and production patterns play a central role. A non-instantly visible, yet statistically significant, effect of such events is the alteration of the correlation structure between financial assets. When a major macroeconomic event impacts the system, the relationships between assets—normally diversified—tend to converge, leading to an increase in systematic risk and a reduced effectiveness of traditional portfolio strategies. The objective of this thesis is to investigate the dynamic transformations of interdependencies between financial instruments in the presence of external shocks, with the aim of better understanding the mechanisms governing the collective behavior of markets. The approach adopted will be quantitative, involving the use of advanced statistical techniques, such as dynamic correlation models and dimensional analysis methods, in order to capture the variability of interdependencies between assets.
I mercati finanziari sono sistemi complessi e in continua evoluzione, influenzati da una molteplicità di fattori macroeconomici globali. Tra questi un ruolo centrale e svolto dagli shock geopolitici, dalle decisione di politica monetaria (come la variazione dei tassi d'interesse da parte delle banche centrali) e cambiamenti strutturali del modello di consumo e produzione. Un effetto non instantemente visibile, ma statisticamente rilevanti, di tali eventi è l'alterazione della struttura di correlazione tra gli asset finanziari. Quando un evento macroeconomico di grande portata colpiscono il sistema, le relazioni tra asset-normalmente diversificate-tendono a convergere, portando un aumento del rischio sistematico e a un minore efficacia delle strategie di portafoglio tradizionali. l'obbiettivo di questa tesi è indagare le trasformazioni dinamiche delle interdipendenze tra strumenti finanziari in presenza di shock esterni, con l'obbiettivo di comprendere meglio i meccanismi che governano il comportamento collettivo dei mercati. L'approccio adottato sarà quantitativa, prevedendo l'impiego di tecniche statistiche avanzate, come modelli di correlazione dinamica e metodi di analisi dimensionale, al fine di catturare la variabilità delle interdipendenze tra asset.
Impatto degli eventi macroeconomici sulla struttura della correlazione tra asset
DIALLO, THIERNO ABDOURAHIM
2025/2026
Abstract
Financial markets are complex and constantly evolving systems, influenced by a multitude of global macroeconomic factors. Among these, geopolitical shocks, monetary policy decisions (such as central bank interest rate changes), and structural changes in consumption and production patterns play a central role. A non-instantly visible, yet statistically significant, effect of such events is the alteration of the correlation structure between financial assets. When a major macroeconomic event impacts the system, the relationships between assets—normally diversified—tend to converge, leading to an increase in systematic risk and a reduced effectiveness of traditional portfolio strategies. The objective of this thesis is to investigate the dynamic transformations of interdependencies between financial instruments in the presence of external shocks, with the aim of better understanding the mechanisms governing the collective behavior of markets. The approach adopted will be quantitative, involving the use of advanced statistical techniques, such as dynamic correlation models and dimensional analysis methods, in order to capture the variability of interdependencies between assets.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/106063