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#38
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| On Mon, 26 Feb 2007 18:27:43 -0600, Tad Borek <borekfm[at]pacbell.netwrote: - quote - > Don't underestimate how much this kind of nonsense -- accusing a
The MIFP charter speaks to this subject. I quote from charter item> professional poster of fraud in connection with securities -- shuts down > contributions to this newsgroup. At least, contributions from those of > us who actually have access to tools like portfolio optimization software. #8: "8. Well-tempered disagreements and constructive criticism to participants of this newsgroup are acceptable in the context of adding new information to the discussion. Harassment, personal insults, attacks and profanity towards group participants will not be tolerated whatsoever." According to the online dictionary, "harass" implies systematic persecution by besieging with repeated annoyances, threats or demands. IMO a key word here is "repeated". If anyone feels that they have experienced such treatment on this newsgroup, please bring it to the attention of the Moderators at their private email addresses. For more, see the weekly post, "Posting to misc.invest.financial-plan". -------------- As usual, please do not respond to this post. Comments on newsgroup policy should be sent to the Moderators at their private email address. Thank you. -HW "Skip" Weldon Columbia, SC |
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#37
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| Thanks Tad. |
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#36
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| On Feb 23, 4:06 pm, beliav...[at]aol.com wrote: - quote - > I have a CFA and PhD in physics, have worked as a derivatives
FWIW I enjoy your obvious deep knowledge, insight and analysis.> professional for about 10 years, and I read the major finance > journals. I have been posting to this newsgroup for some time, and > people check my history to determine my credibility. You seem to > believe there is no expertise in finance other than your own. The > newsgroup would be much better off without you. I've sent you a personal email on this topic (from darkness39 (at) yahoo (dot) com). You might find it illuminating. |
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#35
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| On Feb 20, 5:02 am, sawyervill...[at]gmail.com wrote: - quote - > I've finally gotten to the point will I would like to optimize my
Optimization", described as follows:> portfolio using MPT. > I'm looking for some software (preferably free) that would allow me to > run what/if scenarios. > Nothing fancy, since I'm planning on investing is ~5 Vanguard Funds > (Large/Small/International/Growth/Value), but I'm curious what the > historical performance of various weightings would produce in relation > to the risk. > From the web site of the AAII (American Association of Individual Investors) members can download a program called "Portfolio "Portfolio Optimization uses modern portfolio theory to identify efficient combinations of stocks and mutual funds with the minimum level of risk for a specified annual expected portfolio return. It includes a built-in database with annual returns for the past 10 years for all stocks in AAII's Stock Investor Pro and all of the mutual funds in AAII's Quarterly Mutual Fund update. It also plots a graph of the efficient frontier." I just played with the software for a few minutes and have some reservations. (1) It is a DOS program, which is ok with me, but it crashes when one specifies a date rate of 2000-2007, since it has data only up to 2006. That's not how to write a program. (2) It handles a maximum of 32 securities or mutual funds. (3) It uses only yearly data. I am thinking about using portfolio optimization of mutual funds and ETFs for my own investments. The first hurdle is getting accurate (adjusted for splits and distributions) daily return data. One can get daily data for stocks and funds from Yahoo Finance using the Python programming language using a script at http://rimonbarr.com/repository/pyq/index.html |
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#34
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| "John Gunn" <noway[at]forgetit.org> wrote - quote - > "Elle" <honda.lioness[at]nospam.earthlink.net> wrote
Do you think fraudulent advertising did take place here?> > "Tad Borek" <borekfm[at]pacbell.net> wrote > > > Any written communication, including usenet and bulletin > > > board postings, can be considered "advertising" under > > > state and federal securities law. This isn't my > > > opinion -- > > > an auditor told me this. There are very specific > > > guidelines regarding advertising, and as you might > > > imagine, "fraud" is a very dirty word in that context. > > > Nothing stated in this thread constitutes fraudulent > > advertising. I am sorry you object to my pointing out an > > inaccuracy in a statement on portfolio optimization. > > Doing > > so goes towards educating the public on financial > > forecasting, just as pointing out that the many mutual > > fund > > managers who ostensibly "beat the market" in fact > > according > > to studies mostly do not in the future. > > > The inaccuracy which I pointed out was acknowledged by > > its > > poster. He went on to elaborate that his actual > > literature > > on his software is more precise. No harm, no foul, on > > Usenet > > nor anywhere else. I do enjoy your posts. They're very > > revealing. :-) > > > Sadly, Tad is right on. Because otherwise, your comments are a non sequitur to my own. Both of you need to take your objections up with the poster who acknowledged his original comments were inaccurate, re appearing to predict the future. Your determination to ignore this point and try to chill the marketplace of ideas is striking. |
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#33
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| "Elle" <honda.lioness[at]nospam.earthlink.net> wrote in news:juNEh.4345 $PL.2666[at]newsread4.news.pas.earthlink.net: - quote - > "Tad Borek" <borekfm[at]pacbell.net> wrote
Sadly, Tad is right on. Your posts are ill-informed on the reality of> > Any written communication, including usenet and bulletin > > board postings, can be considered "advertising" under > > state and federal securities law. This isn't my opinion -- > > an auditor told me this. There are very specific > > guidelines regarding advertising, and as you might > > imagine, "fraud" is a very dirty word in that context. > Nothing stated in this thread constitutes fraudulent > advertising. I am sorry you object to my pointing out an > inaccuracy in a statement on portfolio optimization. Doing > so goes towards educating the public on financial > forecasting, just as pointing out that the many mutual fund > managers who ostensibly "beat the market" in fact according > to studies mostly do not in the future. > The inaccuracy which I pointed out was acknowledged by its > poster. He went on to elaborate that his actual literature > on his software is more precise. No harm, no foul, on Usenet > nor anywhere else. I do enjoy your posts. They're very > revealing. :-) investmenting and now securites regulation. |
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#32
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| "Tad Borek" <borekfm[at]pacbell.net> wrote - quote - > Any written communication, including usenet and bulletin
Nothing stated in this thread constitutes fraudulent> board postings, can be considered "advertising" under > state and federal securities law. This isn't my opinion -- > an auditor told me this. There are very specific > guidelines regarding advertising, and as you might > imagine, "fraud" is a very dirty word in that context. advertising. I am sorry you object to my pointing out an inaccuracy in a statement on portfolio optimization. Doing so goes towards educating the public on financial forecasting, just as pointing out that the many mutual fund managers who ostensibly "beat the market" in fact according to studies mostly do not in the future. The inaccuracy which I pointed out was acknowledged by its poster. He went on to elaborate that his actual literature on his software is more precise. No harm, no foul, on Usenet nor anywhere else. I do enjoy your posts. They're very revealing. :-) |
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#31
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| Elle wrote: - quote - > For the record, IMO Usenet posts hold virtually no water in
Hmmm, now an expert on securities law. Let describe the reality so you> a court of law as far as "fraud," inter alia, is concerned. > I am surprised you do not know this. understand our point of view. Any written communication, including usenet and bulletin board postings, can be considered "advertising" under state and federal securities law. This isn't my opinion -- an auditor told me this. There are very specific guidelines regarding advertising, and as you might imagine, "fraud" is a very dirty word in that context. You may think this isn't the case, or think it's a bad law, but it's the way it is. This is why we see no registered representatives (stockbrokers) posting on MIFP, their broker-dealers generally forbid it. Us independents can decide for ourselves, and believe me, the compliance attorneys say "don't take the risk!" The question isn't whether posting here could cause problems, or whether one reader could cause problems for us -- it's why any of us would even bother, once there's a risk. -Tad |
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#30
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| "Tad Borek" <borekfm[at]pacbell.net> wrote - quote - > I wouldn't dream of talking about what I use, or how I use
For the record, IMO Usenet posts hold virtually no water in> it, lest my comments not meet Elle's capricious standards > for disclosure, non-solicitation, and heck grammar. One > phone call to a regulator by a loose-cannon MIFP reader > and I'm potentially looking at a one-week non-routine > audit. Why would I bother? a court of law as far as "fraud," inter alia, is concerned. The reason being that this is part of the free marketplace of ideas. Like all of Usenet, this is a casual forum where people are not under a legal obligation for perfection in writing. I would not dream of reporting, using legal avenues, anyone here. Such a complaint would make a laughingstock of the complainer. I am surprised you do not know this. I am sorry you have such a problem with dissent in a forum like this. It is in fact vital to the success of commerce and industry. I fully support diversity in one's portfolio. I think the aforementioned portfolio optimization tools (for fee or not) are far more likely to do good than bad. My objection remains that their output should not be presented as being definitely superior in the future. |
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#29
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| "Tad Borek" <borekfm[at]pacbell.net> wrote - quote - > Elle wrote:
See above. That's not what I said.> > Just my opinion, but it serves the "financial critical > > thinking skills" of America etc. well to add an extra > > qualifying sentence (or words) to posts like your > > previous one. Otherwise, one could make a perfectly > > reasonable argument that there's some attempt at fraud > > (unconscious or otherwise) and seduction here when one > > uses phrases like "Our company's allocation is more > > efficient than yours." > Don't underestimate how much this kind of nonsense -- > accusing a professional poster of fraud in connection with > securities |
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#28
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| Elle wrote: - quote - > Just my opinion, but it serves the "financial critical > thinking skills" of America etc. well to add an extra > qualifying sentence (or words) to posts like your previous > one. Otherwise, one could make a perfectly reasonable > argument that there's some attempt at fraud (unconscious or > otherwise) and seduction here when one uses phrases like > "Our company's allocation is more efficient than yours." Don't underestimate how much this kind of nonsense -- accusing a professional poster of fraud in connection with securities -- shuts down contributions to this newsgroup. At least, contributions from those of us who actually have access to tools like portfolio optimization software. I wouldn't dream of talking about what I use, or how I use it, lest my comments not meet Elle's capricious standards for disclosure, non-solicitation, and heck grammar. One phone call to a regulator by a loose-cannon MIFP reader and I'm potentially looking at a one-week non-routine audit. Why would I bother? Kastnna, I'm sure plenty of people appreciate your posts...but from someone else in the biz...consider yourself warned. <sigh -Tad |
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#27
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| <beliavsky[at]aol.com> wrote - quote - > Even if an ETF has only been around for three years, it
I agree.> may have an > underlying index with a much longer history and an > underlying asset > class with an even longer history. Re selling stuff: It's about generating buzz (and IMO not a few urban legends within that buzz) as much as plugging one's specific service. |
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#26
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| On Feb 23, 3:10 pm, Will Trice <wwtr...[at]paragondynamics.com> wrote: - quote - > beliav...[at]aol.com wrote:
Since volatilities are the square roots of the diagonal elements of> > Forecasting Volatility > > Financial Markets, Institutions, and Instruments 6 (1), 1997. > > http://pages.stern.nyu.edu/~sfiglews...Volatility.pdf > This paper seems to indicate that even simple techniques for forecasting > volatility are fairly good over sufficiently long periods. Of course, > that's only one part of the optimization problem. How good are > forecasts of the correlations between the price movements of different > assets? > -Will the covariance matrix, the simplest approach is to use a single window and sampling interval to compute the covariance matrix. A good introduction to estimation methods is Chapter 16 of the book "Modern Investment Management" by Goldman Sachs Assset Management. One way to study the goodness of correlation/covariance estimates is to look at the returns achieved by an optimizer using them as inputs. The paper below (available by purchase only) tried computing covariances using 5 years of monthly data and 1 year of daily data. For long-only portfolios there was not much difference, but for long/ short portfolios daily data looked better. Minimum-Variance Portfolios in the U.S. Equity Market Clarke, Roger de Silva, Harindra Thorley, Steven THE JOURNAL OF PORTFOLIO MANAGEMENT Fall 2006 In the minimum-variance portfolio, far to the left on the efficient frontier, security weights are independent of expected security returns. Portfolios can be constructed using only the estimated security covariance matrix, without reference to equilibrium expected or actively forecasted returns. Empirical results illustrate the practical value of large-scale numerical optimizations using return- based covariance matrix estimation methodologies, providing new perspective on the factor characteristics of low-volatility portfolios. Optimizations that go back to 1968 reveal that the long- only minimum-variance portfolio has about three-fourths the realized risk of the capitalization-weighted market portfolio, with higher average returns. A working paper by Tal Schwartz at http://www.departments.bucknell.edu/...27Schwartz.pdf found good results using 1 year of daily data. The good results may largely be the result of the 1-year momentum effect, since he estimates mean returns of stocks using the last year, which I would not recommend. These studies look at optimizing a portfolio of stocks rather than asset classes. Both impose limits on the amount invested in any one stock, 5% in the latter case. One can Google "beliavsky realized volatility" in this newsgroup to find a paper on asset allocation using portfolio optimization and implemented using futures contracts -- not practical for most people. |
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#25
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| In article <1172500877.202041.50410[at]v33g2000cwv.googlegroups.com> , "kastnna" <kastnna[at]auburnalum.org> wrote: - quote - > Sorry Michael, I did a pretty poor job of clarifying myself above. I
Sure; that's entirely reasonable. My suggestion was that Bernstein,> worded it pretty poorly. > FWIW, we can plug in as many or as few asset/indexes as we choose. The > asset mix we use to simulate an efficient frontier consists of a bunch > of ETFs that attempt to approach the market portfolio as close as > possible. As you implied, the difficult part is generating a perfectly > efficient frontier that actually has a tangency to the market > portfolio. I an almost certain that our frontier is not 100% > efficient. What we have found to date, is that no one has brought us a > portfolio that is any closer. ... despite some hyperbolic criticism of MVO tools in his book, supports this same kind of approach -- his website, after all, is named "efficient frontier", and stuff on it seems to me to imply that his consultancy operations work analogously to what you describe above. |
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#24
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| On Feb 26, 12:07 pm, "Elle" <honda.lion...[at]nospam.earthlink.netwrote: <snip - quote - > You're welcome in advance, because I think there is no doubt
Even if an ETF has only been around for three years, it may have an> that one's sales pitch is enhanced by speaking as though > past performance represents the future. It's so easily > corrected, grammatically, and it's so important, that I > personally find no excuse for not using the right language. > 'specially when you're talking about, what, three years of > ETF data? People have to make a living, and I do support > diversification, but this newsgroup is about a lot more than > people selling their products.- Hide quoted text - underlying index with a much longer history and an underlying asset class with an even longer history. Most ETFs have tracked their indices pretty closely -- this has been studied. I am sure the software uses index and asset class data for its historical studies. As usual you don't know what you are talking about. If kastnna is trying to sell his products on this newsgroup, he is not trying very hard. I don't know what his real name is, and there is nothing in his signature mentioning his company (there would be nothing wrong with mentioning this). Instead of trying to censor others, censor yourself! |
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#23
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| "kastnna" <kastnna[at]auburnalum.org> wrote - quote - > I don't intend to mislead the noobs and I don't think they
You don't even need the disclaimer. You need only state that> can be to > any serious extent. Even if they become convinced that I > (or someone > else) "have all the answers" they are never going to not > run into the > necessary disclaimers at some point in the process. If > they somehow > managed to track me down, the first thing they would hear > would be > "you know there is no guarantee of future performance..." > I don't end > every verbal sentence with a disclaimer either when > talking with > clients, but before we make any meaningful progress the > disclaimers > are well understood. this is what history has shown. - quote - > Long story short its caveat emptor, and "you get what you
The very basis for _illegal fraud_ is xyz, "intent" can be> pay for." If > you like you can attach a disclaimer for me everytime I > post. I'll say > "thanks" now in advance. > FYI, by definition fraud cannot be "unconscious". The very > basis for > fraud is intent. Careful tossin' that word around. nebulous, it depends on the state, and so forth. My meaning was meant more casually. You're welcome in advance, because I think there is no doubt that one's sales pitch is enhanced by speaking as though past performance represents the future. It's so easily corrected, grammatically, and it's so important, that I personally find no excuse for not using the right language. 'specially when you're talking about, what, three years of ETF data? People have to make a living, and I do support diversification, but this newsgroup is about a lot more than people selling their products. |
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#22
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| On Feb 26, 9:35 am, "Elle" <honda.lion...[at]nospam.earthlink.net> wrote: - quote - > Words are everything. Newbies overwhelmingly frequent this
I don't intend to mislead the noobs and I don't think they can be to> group. > Just my opinion, but it serves the "financial critical > thinking skills" of America etc. well to add an extra > qualifying sentence (or words) to posts like your previous > one. Otherwise, one could make a perfectly reasonable > argument that there's some attempt at fraud (unconscious or > otherwise) and seduction here when one uses phrases like > "Our company's allocation is more efficient than yours." any serious extent. Even if they become convinced that I (or someone else) "have all the answers" they are never going to not run into the necessary disclaimers at some point in the process. If they somehow managed to track me down, the first thing they would hear would be "you know there is no guarantee of future performance..." I don't end every verbal sentence with a disclaimer either when talking with clients, but before we make any meaningful progress the disclaimers are well understood. Long story short its caveat emptor, and "you get what you pay for." If you like you can attach a disclaimer for me everytime I post. I'll say "thanks" now in advance. FYI, by definition fraud cannot be "unconscious". The very basis for fraud is intent. Careful tossin' that word around. |
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#21
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| On Feb 26, 9:01 am, beliav...[at]aol.com wrote: - quote - > How confident are you that the efficient portfolios you generate for
Somewhat. We do "look back" to compare performance after the> clients > do better, AFTER they are constructed, than the portfolios clients > come in with? > Have you studied the level of outerpformance, in terms of Sharpe > ratios? portfolios are constructed. The software is only used for fee-based clients. These clients get quarterly reviews that cover performance, rebalancing, AND the performance of their old portfolio had they kept it. It reassures clients to see what would have happened had they not changed their portfolio. The company that developed the software, fiserv, does most of the legwork for us. We get a wealth of performance data against numerous benchmarks. Among others, actual return and standard dev. are given so that we can do sharpe ratios. We do not perform sharpes on ALL clients because many had portfolios that were so poorly constructed there is no question. Many underperformed us AND had higher Std Dev. The clients that had fairly well constructed portfolios to begin with tend to be our "more demanding" clients by virtue of being more educated. We usually do sharpe ratio values with them during their review. We are confident so far, but remember we have only been using the software for three years and many of the ETFs we use aren't very old either. |
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#20
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| "kastnna" <kastnna[at]auburnalum.org> wrote - quote - > We attach our lovely little "based on historical data"
Words are everything. Newbies overwhelmingly frequent this> disclaimers on everything necessary in our office. For the > sake of > brevity I leave it off on a non-regulated usegroup. group. Just my opinion, but it serves the "financial critical thinking skills" of America etc. well to add an extra qualifying sentence (or words) to posts like your previous one. Otherwise, one could make a perfectly reasonable argument that there's some attempt at fraud (unconscious or otherwise) and seduction here when one uses phrases like "Our company's allocation is more efficient than yours." |
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#19
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| On Feb 26, 9:02 am, "Elle" <honda.lion...[at]nospam.earthlink.net> wrote: Sorry Elle. We attach our lovely little "based on historical data" disclaimers on everything necessary in our office. For the sake of brevity I leave it off on a non-regulated usegroup. If the readers here honestly believe that I can accurately predict the future and/or have software that can assure outpreformance then they have much bigger problems than can be addressed in this group. |
| Tags |
| optimization, portfolio, software |
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