标题: information ratio Level II note6 P232 [打印本页] 作者: fionaqian 时间: 2014-5-20 19:15 标题: information ratio Level II note6 P232
Example: Combined information ratio
Dharmesh Thakur, equity analyst with Gupta Asset Management, currently follows
100 stocks and makes quarterly forecasts. Thakur's information coefficient is 0.05.
1. Compute Thakur's information ratio.
2. IfThakur chooses to follow an additional 100 stocks (with quarterly forecasts) but
with an information coefficient of 0.04, what will be Thakur's new information
ratio?
Answer:
1. Thakur's current breadth = 400. Current information ratio= 0.05 x .J400 = 1.00
2. New information ratio = [l2+ (0.04)2(400)]1'2 = 1.28