Giovanni Pagliardi

European Journal of Operational Research 322|(2) p. 629-646 Doi: https://doi.org/10.1016/j.ejor.2024.10.017

We show that internationally diversified portfolios carry sizeable political risk premia and expose investors to tail risk. We obtain political efficient frontiers with and without hedging political risk using a portfolio selection model for skewed distributions and develop a new asymptotic inference test to compare portfolio performance. Politically hedged portfolios outperform a broad market index and the equally weighted portfolio for US, Eurozone, and Japanese investors. Political risk hedging is not subsumed by currency hedging, and the diversification gains of politically hedged portfolios persist under currency hedging and transaction cost frictions. Hedging political risk induces equity home bias but does not fully explain the puzzle.

Journal of Empirical Finance 72 p. 78-102 Doi: https://doi.org/10.1016/j.jempfin.2023.03.004

Using novel measures of politics-policy uncertainty we document predictable variation in stock market returns across countries. Country characteristics and existing global and local risk factors do not account for such predictability, leading to large abnormal returns up to 15% per annum. We identify a global political risk factor (P-factor) commanding a risk premium of 11% per annum. High political uncertainty countries covary positively with the P-factor, earning higher average returns. Augmenting the global market portfolio with the P-factor significantly reduces pricing errors and improves cross-sectional fit. Politics-policy uncertainty affects returns through both cash-flow and discount rate channels.