Browsing by Author "Sieradzan, Olga"

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Access status: Open Access ,
Gdzie najlepiej zostać rodzicem? Ranking państw sprzyjających rodzicielstwu
(Wydawnictwa AGH, 2024) Sieradzan, Olga
A frequently discussed topic in Polska lately is the issue of low natural population growth. Changes in attitudes and life priorities among young people have contributed to a delay in starting families. Furthermore, government actions aimed at increasing natural population growth have not addressed this problem. Many individuals are contemplating whether they want to become parents in the future. Another dilemma is the decision about where to reside, with many young people considering moving abroad. The objective of the conducted study is to create a ranking of selected countries worldwide where it is best to become a parent. An attempt is also made to answer the question of what needs to be improved in Polska to combat declining natural population growth. The study was based on data from 2019–2023 concerning various factors related to parenthood. Special attention was paid to data concerning equal rights for fathers and mothers, as well as gender pay equality. Additionally, data on healthcare, educational system, and environmental conditions of each country were considered. The Hellwig method was utilized to create the ranking of countries.
Access status: Open Access ,
High-Volume Return Premium on the Warsaw Stock Exchange: evidence, drivers, and strategy design
(Wydawnictwa AGH, 2026) Sieradzan, Olga; Wójtowicz, Tomasz
This paper investigates the High-Volume Return Premium (HVRP) on the Warsaw Stock Exchange from 2002 to 2023. Building on prior research, it tests whether an unusually high trading volume predicts short-term return anomalies. Using daily data and long-only strategies based on relative trading volume, the study confirms the existence of the HVRP, with the strongest effects observed over one-day horizons, particularly for mid-cap and low-priced stocks. The premium weakens with longer holding periods and lower trading activity. These findings indicate that trading volume carries predictive information in an emerging market context and that volume-based signals can generate exploitable short-term return patterns. However, practical constraints such as transaction costs may limit the real-world profitability of such strategies.