Browsing by Author "Do HX"

Now showing 1 - 7 of 7
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    Asymmetric trading responses to credit rating announcements from issuer- versus investor-paid rating agencies
    (John Wiley and Sons, Ltd, 2024-01) Nguyen QMP; Do HX; Molchanov A; Nguyen L; Nguyen NH
    The credit rating industry has traditionally followed the “issuer-pays” principle. Issuer-paid credit rating agencies (CRAs) have faced criticism regarding their untimely release of negative rating adjustments, which is attributed to a conflict of interests in their business model. An alternative model based on the “investor-pays” principle is arguably less subject to the conflict of interest problem. We examine how investors respond to changes in credit ratings issued by these two types of CRAs. We find that investors react asymmetrically: They abnormally sell equity stakes around rating downgrades by investor-paid CRAs, while abnormally buying around rating upgrades by issuer-paid CRAs. Our study suggests that, through their trades, investors capitalize on value-relevant information provided by both types of CRAs, and a dynamic trading strategy taking advantage of this information generates significant abnormal returns.
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    Does the U.S. export inflation? Evidence from the dynamic inflation spillover between the U.S. and EAGLEs
    (Elsevier Inc, 2024-07-02) Nguyen TTT; Pham SD; Li X-M; Do HX
    Given the crucial role of inflation as a key economic barometer, our paper investigates the dynamic inflation spillover between the U.S. and the nine emerging and growth-leading economies (EAGLEs) between 1991M1 and 2020M2. Employing the recently developed time-varying parameter vector autoregressions (TVP-VAR)-based connectedness approach, we find evidence of a moderate inflation spillover across the sample countries at normal condition. We further point out that inflation spillover effects with the U.S. are more pronounced for the emerging markets with higher openness, the net oil-importing emerging markets, and the emerging markets following free-float exchange rate regimes. More importantly, the inflation spillover index among the system rises dramatically to over 70% under extremely inflationary conditions, implying that the transmission of spiral inflation is very high. Additionally, the time-varying analysis shows that the role of the U.S. in the inflation shock transmission with emerging countries varies between being a net inflation-exporter and inflation-importer over times. Finally, an investigation of the drivers of the inflation spillovers reveals that the U.S. dollar, emerging markets' economic policy uncertainty, and bilateral trade are key determinants of the inflation shock transmission among the system. Our findings justify central banks’ actions in decreasing U.S. dollar reserves to safeguard their domestic currencies.
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    Electricity market crisis in Europe and cross border price effects: A quantile return connectedness analysis
    (Elsevier B V, 2024-07) Do HX; Nepal R; Pham SD; Jamasb T
    As the interconnection of the European electricity markets and integration of renewables progresses, there is little known about interconnectedness across them at times of market turbulence. The electricity crisis of 2021 and 2023 were significant events that can also provide lessons in the behaviour of integrated markets with high renewables under stress. Despite the impacts of the COVID-19 pandemic and the Russia-Ukraine war on the European energy market, little is known about their effects on the transmission of risks between the electricity markets. We employ the quantile connectedness approach to quantify the return connectedness between eleven key European markets, as well as the natural gas and carbon markets. We then examine the effect of the two crises on the interconnectedness. We find significant return interconnectedness, driven by spillover effects, among the markets. Analysis of connectedness across quantiles shows that the spillover effects are much stronger at tail ends of conditional distribution. Moreover, our results reveal opposite effects from crises on market interconnectedness. While the COVID-19 pandemic reduced the interconnectedness, the Russia-Ukraine war intensified the return shock transmission. Finally, we find that the natural gas and carbon markets are net recipients of return shocks across the quantiles.
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    Liquidity constraints, home equity and residential mortgage losses
    (30/06/2016) Do HX; Rosch D; Scheule H
    This paper analyses how borrower liquidity constraints and home equity relate to the realized loss given default (LGD) using the quarterly U.S. residential mortgage loan-level data observed from Q2 2005 to Q1 2015. We define defaulted loans with zero-LGD as cure loans and those with non-zero LGD as non-cure loans. We find robust evidence that the borrower liquidity constraints and positive equity are explaining cure, while negative equity explains non-zero loss. However, a relationship between borrower liquidity constraints and the non-zero LGD is not economically meaningful. Our findings support to separate cure and non-cure loans in mortgage loss risk models.
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    Portfolio's weighted political risk and mutual fund performance: A text-based approach
    (Elsevier Inc, 2024-08) Nguyen HG; Hoang K; Nguyen QMP; Do HX; Nguyen DK
    Using text-based measures of firm-level political risk, we find a negative impact of the portfolio's weighted political risk on U.S. mutual fund performance. This relationship is robust to a wide range of topic-specific political risks at the firm level. We, however, find that national geopolitical risk, the U.S. state-level economic policy uncertainty, and Brexit-induced risk do not affect mutual fund performance. Our results suggest that even though mutual funds are immune from political risk at the macro level, they are significantly exposed to idiosyncratic political risk. We also demonstrate that partisanship matters to mutual fund performance.
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    Volatility spillovers and carbon price in the Nordic wholesale electricity markets
    (Elsevier B V, 2024-06) Lyu C; Do HX; Nepal R; Jamasb T
    This paper investigates price volatility and spillovers in the Nordic electricity wholesale markets. We use the Time-Varying Parameter Vector Autoregressive (TVP-VAR), Rolling Window-based VAR (RW-VAR), and high dimensional VAR with common factors (VAR-CF) methods and analyze the integration dynamics among these markets and impact of carbon prices on volatility spillovers. We use 107,352 hourly price data from January 2010 to March 2022. The novelty of this research is four-fold. First, we adopt a connectedness approach to explore volatility interactions among the four Nordic markets, contributing to the scarce literature on volatility in this market. Second, we segment the Norwegian market into southern and northern regions, revealing differences in volatility spillover patterns. Third, we investigate the effect of carbon prices on volatility spillovers and market dynamics. Last, we show significant contribution of covariances to interdependence among markets. We find significant connectedness between the Nordic markets, with an average Total Connectedness Index of between 50% (with a system of variance) and 90% (with a system of both variance and covariance). Sweden is the sole net volatility spillover transmitter, while Denmark experiences the largest shocks from the system. We further find that carbon prices exert a 5% significant impact on the volatility spillover index.
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    When Hollywood movies steal the show, stock returns dance more with the market!
    (Elsevier Inc, 2024-10) Do HX; Nguyen NH; Nguyen QMP; Nguyen TVH; Truong C
    Hollywood film releases attract U.S. investors' attention away from the financial markets. This is reflected in lower trading activity and abnormal Google search volume for firm names between film and non-film days. The resultant investor inattention leads to a significantly higher stock return comovement with the market on film release days. Interestingly, films with A-list star actors and blockbuster movies exhibit a more pronounced impact than their counterparts. Finally, we show that being aware of this Hollywood film-induced mispricing can yield an annualized abnormal risk-adjusted return of up to 13.5% within five days around the release events.