arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2010.13630q-fin.PRq-fin.MF
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无套利市场中的衍生产品定价

Derivatives Pricing in Non-Arbitrage Market

N. S. Gonchar

摘要:

针对一类风险资产的发展,给出了构造一类鞅测度的一般方法。给出了风险资产演化的充分条件,在该条件下,原测度的等价鞅测度族是非空集。鞅测度集是由满足一定条件的严格非负随机变量集构造的。对于满足一定条件的非负随机变量序列,得到了这些不等式。利用这些不等式,给出了非负上鞅的选择分解定理的一个新的简单证明。引入了点测度族,并给出了它的表示式。给出了每个鞅测度是点测度集上的积分的条件。在非线性随机过程的基础上,引入了参数随机过程族,得到了无套利价格的区间,得到了欧式期权合约在所考虑的参数过程下的公平价格公式.对所引入的随机过程的参数进行了估计,得到了期权合同的公平价格最小的估计。

英文摘要:

The general method is proposed for constructing a family of martingale measures for a wide class of evolution of risky assets. The sufficient conditions are formulated for the evolution of risky assets under which the family of equivalent martingale measures to the original measure is a non-empty set. The set of martingale measures is constructed from a set of strictly nonneg ative random variables, satisfying certain conditions. The inequalities are obtained for the non-negative random variables satisfying certain conditions. Using these inequalities, a new simple proof of optional decomposition theorem for the nonnegative super-martingale is proposed. The family of spot measures is introduced and the representation is found for them. The conditions are found under which each martingale measure is an integral over the set of spot measures. On the basis of nonlinear processes such as ARCH and GARCH, the parametric family of random processes is introduced for which the interval of non-arbitrage prices are found. The formula is obtained for the fair price of the contract with option of European type for the considered parametric processes. The parameters of the introduced random processes are estimated and the estimate is found at which the fair price of contract with option is the least.

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