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by aptenodyte
May 16th, 2006, 9:10 am
Forum: Student Forum
Topic: Columbia Statistics and MFE Programs
Replies: 8
Views: 111553

Columbia Statistics and MFE Programs

MFE at Columbia is good but pretty basic.The Math Finance there is very theoretical.Their Center for Applied Probability has had a good rep for manyyears. But if you want to get into a top tier bank you prob needa PhD.
by aptenodyte
May 9th, 2006, 6:49 am
Forum: Student Forum
Topic: Kelly betting for normal distributions
Replies: 2
Views: 106370

Kelly betting for normal distributions

Thanks. Does subtracting the risk-free rate make sense if the portfolio generating the returnis self-financing? Seems like kelly theory may break down in this case and argue for limitlessleverage since its effectively a free bet with high expectation.
by aptenodyte
May 8th, 2006, 4:37 pm
Forum: Student Forum
Topic: Kelly betting for normal distributions
Replies: 2
Views: 106370

Kelly betting for normal distributions

<t>AM trying to determine kelly bet size when returns come from a normal distribution;Searches on Wilmott and on Google suggest that kelly fraction is mu/sigma^2 but this makes no sense:if I have a annual Information ratio of 1.5 with a mean of 6% and stdev of 4% the fraction comes outto be 37.50 we...
by aptenodyte
December 20th, 2005, 1:21 pm
Forum: Technical Forum
Topic: Avellaneda's papers
Replies: 3
Views: 138654

Avellaneda's papers

great to see that you agre with yourself
by aptenodyte
November 22nd, 2005, 11:04 pm
Forum: Student Forum
Topic: portfolio correlation
Replies: 1
Views: 129046

portfolio correlation

<t>Does anyone have suggestions on how to find a portfolio weight vector to maximize correlation with another portfolio?For example I have a pre-specified portfolio of hedge fund returns that I cannot trade, but want to maximize correlation with this through some other tradable assets - I have a sam...
by aptenodyte
March 1st, 2004, 6:53 pm
Forum: General Forum
Topic: Portfolio Correlation
Replies: 2
Views: 189850

Portfolio Correlation

<t>Does anyone know how to calculate the correlation of two portfolios directly from the covariance matrix?i.e. if I have a CAPM model r(i) = B(i)*mkt+e(i) which gives me cov matrix C when B(i) and sigma(i) are known or estimatedhow would I calculate the correlation between two portfolios with weigh...
by aptenodyte
August 24th, 2003, 5:33 pm
Forum: Off Topic
Topic: why has wilmott degenerated and how can we fix it?
Replies: 94
Views: 196258

why has wilmott degenerated and how can we fix it?

When you losers are finished sniping at each other, then, and only thenwill this ugly mess get any better. I'm gone, I've got better things to do.
by aptenodyte
August 1st, 2003, 9:26 pm
Forum: General Forum
Topic: Indicator
Replies: 1
Views: 189597

Indicator

For quarterly data, look at sales of major trucking companies...SWFT,WERN,JBHT,USFC,ROAD,ABFS etc
by aptenodyte
July 27th, 2003, 11:41 pm
Forum: Technical Forum
Topic: Model to forecast/calculate the dividend yield of an equity
Replies: 22
Views: 192719

Model to forecast/calculate the dividend yield of an equity

<t>For a super-cap stock like MSFT, I would say yes, all the big indexers are forecasting previously non-existent dividends, it would matter a great deal to cost of carry on a $5billion dollar arb book. Regarding writeups of methodology, sorry tosh137 I am not aware of anything out there. The proble...
by aptenodyte
July 23rd, 2003, 11:30 pm
Forum: Technical Forum
Topic: Model to forecast/calculate the dividend yield of an equity
Replies: 22
Views: 192719

Model to forecast/calculate the dividend yield of an equity

<t>Most index arb models look at historical payments for each stock, thenforecast these with similar ex dates and amounts, sometimes with a (small) growth factor if earnings estimates are decent....though unless you are doingsome futures fair value/basis calculations you could just use the historica...
by aptenodyte
July 11th, 2003, 12:10 pm
Forum: General Forum
Topic: Equity Pricing Model
Replies: 10
Views: 191844

Equity Pricing Model

<t>Exactly - I am actually trying to fit the solution to a model by Dong to minimize MSE on price instead of P/Ebut its virtually the same - my results are as you suggest "not robust". It is a complex system with manyparms but there seemed to be enough "order" there to maybe force a single solution....
by aptenodyte
July 10th, 2003, 5:07 pm
Forum: General Forum
Topic: Equity Pricing Model
Replies: 10
Views: 191844

Equity Pricing Model

<t>I have tried fitting this model, I seem to get local minima very dependent upon starting pointand a large number of useless minima which is surprising given the number of free parametersvs the number of data points; it should be "easy" to get a good fit. What upper/lower parameterboundaries are y...
by aptenodyte
October 25th, 2002, 12:09 am
Forum: General Forum
Topic: Energy Trading / Power Marketing
Replies: 4
Views: 190199

Energy Trading / Power Marketing

Constellation Energy in Baltimore is profitable, and wellrun now that they are independent of GS.