Wyniki wyszukiwania - BazTech

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Impact of the COVID-19 pandemic on real estate market in Cracow

Żabówka Rafał, Maciuk Kamil

Zeszyty Naukowe. Transport / Politechnika Śląska

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2022

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z. 114

211--224

EN

The purpose of this study was to determine the impact of the COVID-19 pandemic on the Cracow real estate market. The data used in the study included transactions of purchase of flats and single-family houses. At the initial stage, the database was reduced by applying a four-step selection and outliers were removed. The data analysis included separate transactions for single-family houses and flats, 5 different types of charts were prepared for each type of real estate. The conducted research concerned: the analysis of the number of transactions in subsequent years, the share of the number of transactions in individual quarters, average transaction prices (for houses) or average prices per square meter (for flats), analysis of the number of transactions in individual districts, years and quarters, and a comparison of the number of contracts in individual quarters given years. The main conclusion drawn from the study is the significant impact of COVID-19 on the number of house and apartment purchase transactions, while the pandemic did not have a significant impact on the average prices in the analysed database.

2

Pairs trading with the persistence-based decomposition model

Rende Jonas

Managerial Economics

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2019

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Vol. 20, no. 2

151--180

EN

Recently, the persistence-based decomposition (PBD) model has been introduced to the scientific community by Rende et al. (2019). It decomposes a spread time series between two securities into three components capturing infinite, finite, and no shock persistence. The authors provide empirical evidence that the model adopts well to noisy high-frequency data in terms of model fitting and prediction. We put the PBD model to test on a large-scale high-frequency pairs trading application, using S&P 500 minute-by-minute data from 1998 to 2016. After accounting for execution limitations (waiting rule, volume constraints, and short-selling fees) the PBD model yields statistically significant and economically meaningful annual returns after transaction costs of 9.16 percent. These returns can only partially be explained by the exposure to common risk. In addition, the model is superior in terms of risk-return metrics. The model performs very well in bear markets. We quantify the impact of execution limitations on risk and return measures by relaxing backtesting restrictions step-by-step. If no restrictions are imposed, we find annual returns after costs of 138.6 percent.

3

Economic sanctions : towards comprehensive security?

Nečas P., Olejnik F., Spilý P.

Zeszyty Naukowe / Wyższa Szkoła Oficerska Sił Powietrznych

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2010

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nr 1

56--61

EN

An embargo is an official suspension of import and/or export of. Some specificy or all goods. It can be declared either by one country, or by a group of countries, against a specific country for political, health, or labour related reasons, for a, specifited or indefinite period. The aim is to isolate it, pressure its government and force it to reverse a specific policy. This embargo may also be called “economic sanctions”. Sometimes embargos are implemented against countries whose conduct has been condemned by the international community. In the case of health-related embargos, the objective may simply be to prevent the transmission of disease across national boundaries.