This paper analyses lead–lag relationships in sovereign ratings across five agencies, and finds evidence of interdependence in rating actions. Upgrade (downgrade) probabilities are much higher, and downgrade (upgrade) probabilities are much lower for a sovereign issuer with a recent upgrade (downgrade) by another agency. S&P tends to demonstrate the least dependence on other agencies, and Moody’s tends to be the first mover in upgrades. Rating actions by Japanese agencies tend to lag those of the larger agencies, although there is some evidence that they lead Moody’s downgrades.

This paper analyses the effects of sovereign rating actions on the credit ratings of banks in emerging markets, using a sample from three global rating agencies across 54 countries for 1999–2009. Despite widespread attention to sovereign ratings and bank ratings, no previous study has investigated the link in this manner. We find that sovereign rating upgrades (downgrades) have strong effects on bank rating upgrades (downgrades). The impact of sovereign watch status on bank rating actions is much weaker and often insignificant. The sensitivity of banks’ ratings to sovereign rating actions is affected by the countries’ economic and financial freedom and by macroeconomic conditions. Ratings of banks with different ownership structures are all influenced strongly by the sovereign rating, with some variation depending on the countries’ characteristics. Emerging market bank ratings are less likely to follow sovereign rating downgrades during the recent financial crisis period.

Price clustering and optimal tick sizes have recently been topics of substantial public policy interest, and this paper presents evidence which is relevant to both debates. Around 98% of quoted and traded prices for LIFFE stock index derivatives are found to occur at even ticks. We report that clustering increases with volatility and transaction frequency, and decreases with trade size, and find that the proportion of odd ticks is significantly lower near the market open and higher near the close. Further, an inverse relationship is reported between bid–ask spreads and the number of odd ticks, and spreads cluster at even-tick values. This evidence of extreme price clustering is the first to be presented for financial derivatives. The results support both the price resolution and the negotiation hypotheses of price clustering.

In response to the Covid-19 crisis, EU leaders agreed on the creation of a €750bn recovery fund (the Next Generation EU, NGEU). We investigate the short-term impact of this landmark deal on bank stocks, sovereign credit default swaps (CDS) and bank CDS. First, we find that stock market investors firmly welcomed the agreement as we find sizeable positive abnormal returns in bank stocks as a response to the NGEU proposal by the European Commission. Spreads on sovereign and bank CDS significantly declined, with more pronounced movements for heavily indebted countries and those that strongly advocated the creation of the recovery fund and for the banks located in these economies. Second, we show that banks’ sovereign exposures towards other European countries, especially those with weaker financial conditions and limited fiscal capacity, play a key role in driving the strength of the stock market reaction. Overall, financial markets responded positively to the credibility of the NGEU policy as an extraordinary common effort to support the post-Covid-19 recovery and enhance economic growth in the region.

This paper provides evidence of the impact of the new European bank resolution regime on the sovereign-bank nexus. The implementation of the Bank Recovery and Resolution Directive (BRRD) is considered as an exogenous shock which provides the setting for a natural experiment. This investigation tests the financial markets’ perception of the effectiveness of the new rules in weakening the tight interconnectedness between sovereign and bank risk. A Difference-in-Differences (DiD) approach is adopted, building evidence from the Credit Default Swap (CDS) market for banks and non-financial corporates over the period 2011-18. The main findings do not indicate a significant weakening in the interaction between bank and sovereign CDS spreads, compared to the corresponding evidence for the non-financial corporate sector. An overall narrowing of the gap between bank and sovereign risk occurs, which initially implies a lack of credibility of the BRRD in financial markets. However, substantial cross-country variations are identified, particularly for Italy and non-euro area countries. These insights make a significant contribution to the policy debate on effective regulation of the sovereign-bank nexus, in the light of recent developments in the EU post-crisis reform agenda.

We investigate whether the European regulatory reforms of the credit rating industry have been successful in improving the quality of financial institutions’ credit ratings. A shift to more conservative rating behaviour rather than rating quality improvement is identified, which is attributable to increased regulatory scrutiny. This change leads to a reduction in rating inflation and an increase in the number of unwarranted downgrades and false rating warnings in the post-regulatory period. A significant decrease (increase) in the informativeness of rating downgrades (upgrades) is evident. Our findings contrast with prior evidence for US corporates where reputational effects dominated.