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Upper and lower bounds are derived for call options traded at discrete intervals. These bounds are independent of assumptions on the stock price distribution other than a restriction satisfied by the stock being “non-negative beta.” The development of the bounds relies on the single-price law and arbitrage arguments. Both single-period and multiperiod results are produced, and put option bounds follow by extension. The bounds exist as equilibrium values given a consensus on stock price distribution; they are also valid for empirical studies, being adjustable for dividends and commissions. 相似文献
206.
PETER SAUNDERS 《The Economic record》1981,57(4):368-378
This paper investigates the formation of price expectations by Australian manufacturing firms. It is shown that the reported expectations are generally consistent with the hypothesis that they are derived as conditional forecasts from the model used by firms in determining their actual price change behaviour. Tests are then undertaken to see whether the expectations are unbiased and efficient forecasts, the cross-section results indicating generally that they are neither, and hence not rational. Alternative time-series tests of the unbiasedness and efficiency hypothesis, however, suggest that neither hypothesis can be rejected, implying rationality. 相似文献
207.
PETER HARTLEY 《The Economic record》1986,62(3):286-295
Far from thinking the extent of foreign investment in Australia is large, economists ought perhaps be surprised that the extent is not greater. Certainly, portfolio diversification theory would seem to predict Australians would own a small share of their marketable wealth in Australian marketed assets. We show that when domestic residents in a small open economy possess non-marketable wealth (so that securities markets are not complete), domestic marketed assets may be disproportionately demanded by residents to hedge their non-marketed risks. 相似文献
208.
PETER C. MAYER 《Contemporary economic policy》1995,13(2):109-118
Research supports the efficacy of prospect theory over utility maximization for consumer investment in electricity saving equipment. The findings have implications for designing electric utility programs to promote electricity conservation. Prospect theory describes, explains and organizes consumer behavior that is contrary to consumers maximizing a stable utility function. The results are similar across three ethnic groups. 相似文献
209.
JAROSLAV BOROVIČKA LARS PETER HANSEN JOSÉ A. SCHEINKMAN 《The Journal of Finance》2016,71(6):2493-2544
Asset prices contain information about the probability distribution of future states and the stochastic discounting of those states as used by investors. To better understand the challenge in distinguishing investors' beliefs from risk‐adjusted discounting, we use Perron–Frobenius Theory to isolate a positive martingale component of the stochastic discount factor process. This component recovers a probability measure that absorbs long‐term risk adjustments. When the martingale is not degenerate, surmising that this recovered probability captures investors' beliefs distorts inference about risk‐return tradeoffs. Stochastic discount factors in many structural models of asset prices have empirically relevant martingale components. 相似文献
210.
PETER DEBBAUT ANDRA GHENT MARIANNA KUDLYAK 《Journal of Money, Credit and Banking》2016,48(7):1495-1513
We study a new law that restricts credit to individuals under age 21. We first use a difference‐in‐difference approach to estimate the effect of the law on credit card availability. Following the passage of the law, individuals under age 21 are 8 percentage points (15%) less likely to have a credit card, have fewer cards, and, conditional on having a card at all, are 35% more likely to have a cosigned card. We then use data from before the passage of the law to identify the characteristics of those individuals most likely to be affected by the Act. 相似文献