We show that in a market with an infinite number of assets and investors with unbiased heterogeneous beliefs, asset prices are identical to pricing in the capital asset pricing model, even if prices reveal no information. This result holds despite the fact that in the heterogeneous market the...

In multi-period insurance contract, the premiums that the insured must pay increase whenever he files a claim. Hence in this case the buyer of insurance faces a problem which does not exist in one period contracts. Namely: he must decide for which damages he should file a claim and for which he...

In automobile insurance the premium rate which the insured must pay increases whenever he files a claim. Here we present the optimal claims strategy of the insured. It is shown that the insured will file a claim only if the damage exceeds some critical value which depends on his premium rate and...