Hortense Santos

Hortense Santos
Polytechnic Institute of Setúbal · Departamento de Contabilidade e Finanças

Master of Finance

About

25
Publications
5,119
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157
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Introduction
Bachelor’s degree in Human Relations and Organizational Communication at Polytechnic Institute of Leiria. Master Degree in Accounting and Finance at Polytechnic Institute of Setúbal. Her main research interests are: Financial Markets, portfolio diversification strategies and economical international politics. She is Human Resources and Quality Manager, with 15 years of experience in retail and investing banking.

Publications

Publications (25)
Article
Full-text available
This paper aims to analyze the predictability of the stocks of Apple, Microsoft, Amazon.com, Tesla, Facebook, Samsung, Electronics, Johnson & Johnson, and Walmart in the period from October 1, 2019 to January 11, 2021. To carry out such an analysis, it is intended to answer two research questions, namely: (i) Is there predictability in the stock pr...
Article
Full-text available
This paper aims to examine whether the oil price war between Saudi Arabia and Russia has increased integration between the Crude Oil WTI Spot oil index and the G7 stock markets,. The results show that in the period before the oil price war, the G7 stock markets and the WTI index had 29 integrations (out of 56 possible). The WTI index is integrated...
Article
Full-text available
This essay aims to analyze the efficiency in its weak The results suggest that in the pre-Covid subperiod, we can see that the random walk hypothesis is rejected: IDR/MYR (0.61), IDR/SGD (0.60), IDR/US (0.59), IDR/THB (0.56), IDR/EUR (0.55), and IDR/GBP (0.54), except for the IDR/PHP pair (0.45), which evidences anti-persistency. Already in the COV...
Article
Full-text available
This paper aims to test efficiency, in its weak form, in the capital markets of the Netherlands (AEX), Belgium (BEL 20), France (CAC 40), Ireland (ISEQ 20), Norway (OSEBX), and Portugal (PSI 20), in the period from April 4, 2019 to April 1, 2021. The sample was partitioned into two sub-periods, the first and second waves of the global pandemic. To...
Article
Full-text available
This paper aims to test the efficient market hypothesis, in its weak form, in the stock markets of Botswana, Egypt, Kenya, Morocco, Nigeria, and South Africa in the period from September 2, 2019 to September 2, 2020. In order to achieve this analysis, we intend to find out if the global pandemic (Covid-19) has decreased the efficiency, in its weak...
Article
Full-text available
The results show mostly structural breakdowns in March 2020, while the VAR Granger Causality/Block Exogeneity Wald Tests model shows two-way shocks between oil (WTI) and the stock markets analyzed. These findings show that the hypothesis of portfolio diversification may be called into question. As a final discussion, we consider that investors shou...
Article
Full-text available
The 2020 Russia-Saudi Oil Price War was an economic war triggered in March 2020 by Saudi Arabia in response to Russia's refusal to reduce oil production to keep oil prices at a moderate level. This economic conflict resulted in a sharp drop in the price of oil in 2020, as well as crashes in international markets. In the light of these events, our a...
Article
Full-text available
To perform this analysis, different approaches were undertaken to assess whether: (i) the impact of the global pandemic created long memories in international foreign exchange markets. The results of the exponents Detrended Fluctuation Analysis (DFA) show that the exchange rates US-THB (0.60), US-MYR (0.59), and US-SGD (0.59) present long memories,...
Chapter
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This chapter aims to analyze the rebalancing of portfolios in the financial markets of China Hong Kong, Malaysia, Singapore, Indonesia, Japan, Philippines, Thailand, South Korea, gold (Bullion(Zurich) kg(995) CHF), silver (Paris Spot E/KG), platinum (Paris Spot E/KG), in the period from 2 September 2019 to 2 September 2020. The rhoDCCA results show...
Chapter
Full-text available
This chapter aims to analyze the impact of the global 2020 pandemic on the banking sectors of the Czech Republic,. The results of the Gregory-Hansen test, in the covid subperiod, show 27 integra-tions (in 30 possible). When comparing the pre-covid and covid subperiods, the level of integration has increased 386% between markets, which could call in...
Chapter
Full-text available
This chapter aims to analyze the efficiency, in its weak form, in the exchange rates of Brazil vs. USA, Australia, Canada, Europe (Euro Zone), Switzerland, United Kingdom, and Japan from July 1, 2019 to September 20, 2020. The results suggest that exchange rates show signs of (in)efficiency, in their weak form (i.e., the values of the variance rati...
Article
Full-text available
The new coronavirus disease (Covid-19) evolved quickly from a regional health outbreak to a global collapse, stopping the global economy in an unprecedented way and creating uncertainty and chaos in the financial markets. Based on these events, it is intended in this paper to test the persistence of profitability in the financial markets of Argenti...
Conference Paper
Full-text available
This essay aims to analyze the efficiency, in its weak form, in the Exchange Markets IDR/MYR (Indonesia-Malaysia), IDR/PHP (Indonesia-Philippines), IDR/SGD (Indonesia-Singapore), IDR/THB (Indonesia-Thailand), IDR/GBP (Indonesia-UK), IDR/US (Indonesia-USA), IDR/EUR (Indonesia-Euro Zone/Europe). The sample comprises the period from September 3, 2018,...
Conference Paper
Full-text available
The 2020 Russia-Saudi Oil Price War was an economic war triggered in March 2020 by Saudi Arabia in response to Russia’s refusal to reduce oil production to keep oil prices at a moderate level. In view of these events, this study aims to analyze oil shocks (WTI) in the eastern European stock markets, namely the stock indices of Hungary (BUX), Croati...
Article
Full-text available
This essay aims to analyze the impact of the 2020 global pandemic on the memory properties of the Eastern Europe stock markets, from the period between 1 January 2016 to 2 September 2020, the sample was divided in two subperiods: 1 January 2016 to 30 August 2019 (before Covid 19) and 2 September 2019 to 2 September 2020 (after Covid 19). To perform...
Chapter
Full-text available
This essay aims to test the synchronizations between the stock markets of Malaysia (KLSE), Singapore (TRX SGP), Indonesia (TRX IDP), Philippines (PSEi), Thailand (SET), and the exchange rates of the US Dollar vs. the local currencies of the ASEAN-5 markets, namely the Philippine Peso (PHP), Singapore Dollar (SGD), Thailand Baht (THB), Malaysia Ring...
Conference Paper
Full-text available
This trial aims to analyze the efficiency, in its weak form, between the exchange rates, US-RMB, US-EUR, US-JPY, US-MYR, US-PHP, US-SGD, US-THB, US-CHF, US-GBP, in the period from 1 July 2019 to 27 October 2020. To carry out this analysis different approaches were undertaken in order to assess whether: (i) the impact of the global pandemic has crea...
Conference Paper
Full-text available
his research aims to test the hypothesis of an efficient market, in its weak form, in the stock markets of BOTSWANA, EGYPT, KENYA, MOROCCO, NIGERIA and SOUTH AFRICA, from September 2, 2019 to September 2, 2020. The purpose of this analysis was to answer whether the global pandemic (Covid-19) has reduced the efficiency, in its weak form, of African...
Conference Paper
Full-text available
The new coronavirus disease (Covid-19) has rapidly evolved from a regional health outbreak to a global collapse, stopping the global economy for the first time, creating uncertainty and chaos in financial markets. Based on these events, this trial is intended to test the persistence of profitability in the financial markets of Argentina, Brazil, Ch...
Article
Full-text available
To perform this analysis, different approaches were undertaken to assess whether: (i) the gold, platinum, and silver markets have more robust levels of efficiency when compared to Asian stock markets. The results of the variance test indicate that the random walk hypothesis is rejected in the gold, platinum, and silver markets, as well as in the As...

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