Risk analysis of five stocks indexed by LQ45 using credible value at risk and credible expected tail loss
Penulis/Author
EVY SULISTIANINGSIH (1); Prof. Dr.rer.nat. Dedi Rosadi, S.Si.,, M.Sc. (2); Prof. Dr. Abdurakhman, S.Si., M.Si. (3)
Tanggal/Date
1 2021
Kata Kunci/Keyword
Abstrak/Abstract
Value at Risk (VaR) and Expected Tail Loss (ETL) are two risk measures that are
used frequently to measure the investment risk. Even though VaR can estimate maximum loss
when the investor holds a single asset in a particular period and interval confidence, the
investor frequently develops a portfolio of assets. This condition can create shared risk among
assets in the portfolio so that there will be a chance of an asset for getting loss caused by the
other assets developing the portfolio. On the other hand, there is a fact that VaR cannot provide
loss information at the tail loss part so that we also need ETL that can overcome this problem.
Because of that reason, this paper uses Credible Value at Risk (CredVaR) and Credible
Expected Tail Loss (CredETL), which are formulated based on the Buhlman credibility
concept. Both methods can estimate an investment risk that can overcome the shortcoming of
VaR and ETL that do not consider the risk among assets inside the portfolio. The application of
both methods was utilized to evaluate the individual risk of each asset in a portfolio comprised
of five stocks in the LQ-45 Index (period of February 2019 until July 2019). The data divided
into ten periods of risk analysis comprises of ten-year daily data of each stock from June 2009
to May 2019. According to the result of the analysis, it can be concluded that both methods are
powerful in measuring the risk.
