... Investment Analysis and Portfolio Management 142 Hedging portfolios of shares using index options. Large investors usually manage varied portfolios of shares so, rather than hedging individual ... 9. Klos, Alexander, Elke Weber, Martin Webre (2005), Investment decisions and Time Horizon: Risk Perception and Risk Behavior in Repeated Gambles.// Management Science, p. 177 7- 179 0. 10. Lim, ... Seongyeon (2006). Do Investors Integrate Losses and Segregate Gains? Mental Accounting and Investor Trading Decisions. // Journal of Business, 2006, 79 , p. 2539-2 573 . 11. Nofsinger, John R. (2008)....