Ryzyko systematyczne akcji największych spółek notowanych na NYSE i GPW w Warszawie w okresie 2007–2011
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Beta Parameter is one of the commonly used parameter to estimate the systematic risk associated with stocks. Investor needs efficient investment decisions using beta. Many studies have investigated the relationship between beta risk and stock market conditions during years of financial instability caused by last crisis. This study examined the beta parameter over financial instability 2007–2011. Beta coefficients were calculated using monthly returns over the period 2007–2011, for main stocks listed on NYSE and WSE. This research showed defensive (non-cyclical) stocks listed on NYSE and WSE, betas of defensive stocks are less than one. The main American defensive stocks were: EXXON MOBIL, WAL-MART, PROCTER & GAMBLE, JOHNSON & JOHNSON, PFIZER, COCACOLA, MCDONALD`S, AT&T. The main Polish defensive stocks were: ASSECOPOL, BRE, PKNORLEN, PGNIG, PBG, TPSA i TVN.