Sökning: "Jörgen Hellström"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Jörgen Hellström.

  1. 1. Count data modelling and tourism demand

    Författare :Jörgen Hellström; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time series; Count data; INARMA; Unit root; Aggregation; Forecasting; Tourism; Truncation; Inflation; Simulated maximum likelihood; Bivariate hurdle model.;

    Sammanfattning : This thesis consists of four papers concerning modelling of count data and tourism demand. For three of the papers the focus is on the integer-valued autoregressive moving average model class (INARMA), and especially on the ENAR(l) model. LÄS MER

  3. 2. Information and financial markets

    Författare :Stefan Anchev; Jörgen Hellström; Rickard Olsson; Juha-Pekka Kallunki; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Information; dissemination of information; production of private information; information disadvantage; investor base; stock return anomalies; stock price informativeness; quantity of firm disclosure; less sophisticated individual investors;

    Sammanfattning : The results in this thesis are consistent with the hypotheses that: 1) the incomplete dissemination of information across investors helps in explaining the occurrence and the persistence of cross-sectional stock return anomalies, 2) the properties of the investor base of a stock have implications for the informativeness of the stock's price and 3) a greater quantity of firm disclosure places less sophisticated investors at an information disadvantage. Overall, the thesis provides new empirical evidence about the role of information in financial markets. LÄS MER

  4. 3. Essays on credit markets and banking

    Författare :Ulf Holmberg; Kurt Brännäs; Jörgen Hellström; Peter Englund; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; financial stability; credit market; banking; agent based model; simulations; disequilibrium; clearing market; business cycle; risk; organization; ekonometri; Econometrics; nationalekonomi; Economics;

    Sammanfattning : This thesis consists of four self-contained papers related to banking, credit markets and financial stability.    Paper [I] presents a credit market model and finds, using an agent based modeling approach, that credit crunches have a tendency to occur; even when credit markets are almost entirely transparent in the absence of external shocks. LÄS MER

  5. 4. Individual investors and socially responsible mutual funds

    Författare :Nicha Lapanan; Jörgen Hellström; Rickard Olsson; Maximilian Wimmer; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; individual investors; mutual funds; socially responsible investing; prosocial preference;

    Sammanfattning : This thesis examines the behavior of individual investors towards socially responsible mutual funds. The results are reported in the four self-contained papers.Paper [I] profiles SR individual investors. LÄS MER

  7. 5. Essays on Stock Market Integration - On Stock Market Efficiency, Price Jumps and Stock Market Correlations

    Författare :Yuna Liu; Tomas Sjögren; Jörgen Hellström; Mikael Bask; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time-varying return predictability; Tests for jumps; International financial markets; Market structure; Common trading platform; Integration; Time-varying correlation; C-GARCH; Trust; Portfolio Diversification; Stock Market Participation; nationalekonomi; Economics;

    Sammanfattning : This thesis consists of four self-contained papers related to the change of market structure and the quality of equity market.In Paper [I] we found, by using of a Flexible Dynamic Component Correlations (FDCC) model, that the creation of a common cross-border stock trading platform has increased the long-run trends in conditional correlations between foreign and domestic stock market returns. LÄS MER