英文标题:
《A Note on Universal Bilinear Portfolios》
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作者:
Alex Garivaltis
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最新提交年份:
2019
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英文摘要:
  This note provides a neat and enjoyable expansion and application of the magnificent Ordentlich-Cover theory of \"universal portfolios.\" I generalize Cover\'s benchmark of the best constant-rebalanced portfolio (or 1-linear trading strategy) in hindsight by considering the best bilinear trading strategy determined in hindsight for the realized sequence of asset prices. A bilinear trading strategy is a mini two-period active strategy whose final capital growth factor is linear separately in each period\'s gross return vector for the asset market. I apply Cover\'s ingenious (1991) performance-weighted averaging technique to construct a universal bilinear portfolio that is guaranteed (uniformly for all possible market behavior) to compound its money at the same asymptotic rate as the best bilinear trading strategy in hindsight. Thus, the universal bilinear portfolio asymptotically dominates the original (1-linear) universal portfolio in the same technical sense that Cover\'s universal portfolios asymptotically dominate all constant-rebalanced portfolios and all buy-and-hold strategies. In fact, like so many Russian dolls, one can get carried away and use these ideas to construct an endless hierarchy of ever more dominant $H$-linear universal portfolios. 
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中文摘要:
本说明提供了一个简洁而有趣的扩展和应用“通用投资组合”的宏伟奥登特里希封面理论我通过考虑资产价格实现序列的后见之明中确定的最佳双线性交易策略,在后见之明中概括了Cover关于最佳常数再平衡投资组合(或1-线性交易策略)的基准。双线性交易策略是一种小型两阶段主动策略,其最终资本增长因子在资产市场的每个阶段总回报向量中分别呈线性。我运用Cover(1991)的巧妙性能加权平均技术构建了一个通用的双线性投资组合,该投资组合保证(对所有可能的市场行为都是一致的)以与事后最佳双线性交易策略相同的渐近速度复合其资金。因此,在相同的技术意义上,通用双线性投资组合渐近支配原始(1-线性)通用投资组合,即Cover的通用投资组合渐近支配所有常数再平衡投资组合和所有买入持有策略。事实上,就像许多俄罗斯玩偶一样,人们可以忘乎所以地利用这些想法来构建一个无穷无尽的层次结构,即越来越占主导地位的$H$线性通用投资组合。
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分类信息:
一级分类:Quantitative Finance        数量金融学
二级分类:Mathematical Finance        数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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一级分类:Economics        经济学
二级分类:Theoretical Economics        理论经济学
分类描述:Includes theoretical contributions to Contract Theory, Decision Theory, Game Theory, General Equilibrium, Growth, Learning and Evolution, Macroeconomics, Market and Mechanism Design, and Social Choice.
包括对契约理论、决策理论、博弈论、一般均衡、增长、学习与进化、宏观经济学、市场与机制设计、社会选择的理论贡献。
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一级分类:Quantitative Finance        数量金融学
二级分类:Computational Finance        计算金融学
分类描述:Computational methods, including Monte Carlo, PDE, lattice and other numerical methods with applications to financial modeling
计算方法,包括蒙特卡罗,偏微分方程,格子和其他数值方法,并应用于金融建模
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一级分类:Quantitative Finance        数量金融学
二级分类:General Finance        一般财务
分类描述:Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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一级分类:Quantitative Finance        数量金融学
二级分类:Portfolio Management        项目组合管理
分类描述:Security selection and optimization, capital allocation, investment strategies and performance measurement
证券选择与优化、资本配置、投资策略与绩效评价
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