【学习笔记】「充实计划-每日打卡」0711 奖励方式：回复跟帖（只包含内容1奖励 ...

充实每一天 发表于 2019-7-11 06:18
「充实计划-每日打卡」0711
奖励方式：回复跟帖（只包含内容1奖励10论坛币；同时包含1和2最高奖励50论坛币） ...

昨日阅读1小时，总阅读926小时

充实每一天 发表于 2019-7-11 06:18
「充实计划-每日打卡」0711
奖励方式：回复跟帖（只包含内容1奖励10论坛币；同时包含1和2最高奖励50论坛币） ...

昨日阅读时间1小时，累计阅读时间229小时。

昨日阅读时间1小时，累计阅读时间562小时

昨日阅读1小时，累计阅读593小时

昨天阅读1小时，累计阅读373小时

昨日阅读1小时，累计阅读295小时

昨日阅读1小时，累计阅读757小时。

昨天阅读2小时, 累计阅读440小时
Beyond competitive advantage : how to solve the puzzle of sustaining growth while creating value
Author: Todd Zenger
Harvard Business Review Press

To help managers toward that goal, this book presents the concept of the corporate theory as a means of providing managers and executives with a framework for thinking beyond competitive advantage as they negotiate a changing and challenging environment in search of sustained value creation. As with a scientific theory, the object of a corporate theory is to maximize the probability of selecting valuable paths while minimizing costly mistakes. A good corporate theory thus provides a compass for those at the strategic helm and will, from time to time at least, help them beat the expectations baked into their current share prices or, in the case of privately held firms, investors’ valuations.
A corporate theory is not an abstract academic construct set about with obscure equations and language. It is rather a narrative, an explanation, or even an image that reveals how a particular company can accumulate value or compose competitive advantage over time.

昨日阅读10个小时，累计阅读864小时

昨日阅读10个小时，累计阅读864小时

学习笔记一：【手写学习笔记】徐高-金融经济学二十五讲-31

https://bbs.pinggu.org/thread-7206457-1-1.html

第5讲-05两种风险资产组合

本节对两种风险资产的组合状况进行了分析，并画出了相应的组合线，解释了“分散投资”的潜在意义。

笔记重要点：

        1，  这个组合是双曲线

        2，  双曲线上的两个点是由两个资产的斜方差决定的，或者是两个资产的相关系数决定的。

        3，  如果这两类资产的斜方差或相关系数等于负 -1，那么，两类资产是完全负相关回报率。

        4，  两类负相关资产组合，在于权重选择后风险完全对冲掉，形成无风险资产。

        5，  最小方差组合，方差通过组合变得很小了，风险度也最小。

        6，  通过以方差衡量的风险度组合成不同的风险资产，来降低总组合的风险度，体现了分散投资的好处