# The sharpe ratio and the information

June 16, Calculate Sharpe Ratio of Portfolio in Excel with MarketXLS Sharpe ratio is one of the most commonly used ratios to measure the reward versus risk of an investment opportunity. The Sharpe ratio was developed by Nobel laureate William F. Sharpe, and is a measure for calculating risk-adjusted return of an asset. Above 2 and you get attention. Reading these together you see a bit of a content-free echo chamber. The last reference indicates a part of the problem: The correct perspectives about Sharpe ratio are a bit more nuanced: In fact it is Morningstar that gave a specific range for annual returns around 0.

The theory of the Sharpe ratio is: So the Sharpe ratio is definitely used for comparison. Reading from a primary source we see estimating the Sharpe ratio of a particular investment at a particular time depends on at least the choice of: Changing scale changes returns daily returns compound about times to get yearly returns! The Sharpe ratio is the ratio of these two quantities, and they are not varying in similar ways as we change scale. Picking a too small window may let you avoid some rare losses and display an elevated Sharpe ratio.

Picking a too large window may let in data from markets climates not relevant to the current market. The ratio spends a lot of time well below 1 over this history. For our betting article we needed a Sharpe ratio on a 10 day scale. Over the graphed time interval viewed we have the upper quartile value is 0.

Thus the 10 theoretical day Sharpe ration of 0. Though we have found this calculation is sensitive to the length of the window used to estimate variance for example using a window of 30 days gives us mean: This just confirms the last few years have not been good for US bonds.

[BINGSNIPMIX-3

So using 10 T-note interest rates gives an analysis that is a bit pessimistic and also ascribes the T-note variance to the instrument being scored. The complete R code to produce these graphs from downloaded finance data is given here.What is 'Information Ratio (IR)' The information ratio (IR) is a measure of portfolio returns above the returns of a benchmark, usually an index, to the volatility of those returns.

The. VBA for the Sharpe Ratio. A cleaner solution is the following VBA function. Function SharpeRatio(InvestReturn, RiskFree) As Double Dim AverageReturn As Double Dim StandardDev As Double Dim ExcessReturn() As Double Dim nValues As Integer.

The Sharpe Ratio: The Sharpe Ratio reflects the ratio of all excess returns over the risk free rate to the total risk (or standard deviation) of the return stream.

RiceQuant米筐量化交易平台。深圳米筐科技有限公司致力于打造亚太区最出色的量化交易平台，在我们的平台上，您可以使用我们提供高效的工具和准确的数据去构造您的策略，并进行回测以及优化，而无需担忧基础架构及数据质量问题。. In general, the Sharpe Ratio, which does not take that correlation into account, will not by itself provide sufficient information to determine a set of decisions that will produce an optimal combination of asset risk and return, given an investor's tolerance of risk.

William Forsyth Sharpe (born June 16, ) is an American economist. He is the STANCO 25 Professor of Finance, Emeritus at Stanford University's Graduate School of Business, and the winner of the Nobel Memorial Prize in Economic Sciences.

Sharpe was one of the originators of the capital asset pricing vetconnexx.com created the Sharpe ratio for risk-adjusted investment performance analysis, and.

Investor Home - Who's Who