Possible Risks of Publicizing Personal Stock Portfolio
I am considering making my investment history publicly available online What is the benefit you are looking for by doing this? Just to establish that you are a successful investor, so in long run can predict things ... have tons of followers? If so yes. Go ahead. Updates to the portfolio would have to be near real-time than post facto else no one will believe you and it would be useless. are there any reasons (legal, personal, etc.) not to publicize my personal investment history legal, depends on country; I can't think any [check the agreement with your broker / depository] on how much can be displayed. i.e. they may forbid from revealing contract ref / or some other details. On Personal front, it depends who takes a liking to your stuff.  Relatives: They know you are making huge profits and may want to borrow stuff ... or queue up to you requesting to make similar huge profits for them; only to realize when there is loss they blame you ... this can strain relationships. Friends: Although close friends may have a general idea, if you are too successful and it shows; it can have its own set of issues to deal with. Colleagues / Manager: If you are too successful, it may mean you may notionally be earning more than them ... they would start unconsciously monitoring your behaviour ... this guy spends all day in office researching for stocks and doesn't work. That way he knows how to pick good stock ... he is wasting company time. The same happens if you are loosing stock ... a unrelated bad day you are having maybe equated to loss in stocks. Depending on the job / roles, they may move you to different role as the perceived risk of you swindling goes up. Generally important work doesn't get assigned, as it would be assumed that if you are successful in investing, you may quite soon and start full time into it. Identify Theft: As mentioned by keshlam, to much data one can easily risk identity theft. Realize phone banking to get some routine stuff just asks for basic details [that are available on face book] and few recent debits / credits to the account. This will be easy see the trades you have done. None of us here are expert identity theifs. But the real one have tons of way t "You would be facilitating identity theft. You would be risking people who disagree with your approach thinking you're foolish. Are you really going to gain enough from this decision to offset the risks? Can't you do the same thing with much less detail or a ""fantasy"" account?"
"There are some good answers about the benefits of diversification, but I'm going to go into what is going on mathematically with what you are attempting. I was always under the assumption that as long as two securities are less than perfectly correlated (i.e. 1), that the standard deviation/risk would be less than if I had put 100% into either of the securities. While there does exist a minimum variance portfolio that is a combination of the two with lower vol than 100% of either individually, this portfolio is not necessarily the portfolio with highest utility under your metric.  Your metric includes returns not just volatility/variance so the different returns bias the result away from the min-vol portfolio. Using the utility function: E[x] - .5*A*sig^2 results in the highest utility of 100% VTSAX. So here the Sharpe ratio (risk adjusted return) of the U.S. portfolio is so much higher than the international portfolio over the period tracked that the loss of returns from adding more international stocks outweigh the lower risk that you would get from both just adding the lower vol international stocks and the diversification effects from having a correlation less than one. The key point in the above is ""over the period tracked"".  When you do this type of analysis you implicitly assume that the returns/risk observed in the past will be similar to the returns/risk in the future.   Certainly, if you had invested 100% in the U.S. recently you would have done better than investing in a mix of US/Intl.  However, while the risk and correlations of assets can be (somewhat) stable over time relative returns can vary wildly! This uncertainty of future returns is why most people use a diversified portfolio of assets.  What is the exact right amount is a very hard question though." Googling vanguard target asset allocation led me to this page on the Bogleheads wiki which has detailed breakdowns of the Target Retirement funds; that page in turn has a link to this Vanguard PDF which goes into a good level of detail on the construction of these funds' portfolios. I excerpt: (To the question of why so much weight in equities:) In our view, two important considerations justify an expectation of an   equity risk premium. The first is the historical record: In the past,   and in many countries, stock market investors have been rewarded with   such a premium.  ... Historically, bond returns have lagged equity returns by about 5–6   percentage points, annualized—amounting to an enormous return   differential in most circumstances over longer time periods.   Consequently, retirement savers investing only in “safe” assets must   dramatically increase their savings rates to compensate for the lower   expected returns those investments offer. ... The second strategic principle underlying our glidepath   construction—that younger investors are better able to withstand   risk—recognizes that an individual’s total net worth consists of both   their current financial holdings and their future work earnings. For   younger individuals, the majority of their ultimate retirement wealth   is in the form of what they will earn in the future, or their “human   capital.” Therefore, a large commitment to stocks in a younger   person’s portfolio may be appropriate to balance and diversify risk   exposure to work-related earnings (To the question of how the exact allocations were decided:) As part of the process of evaluating and identifying an appropriate   glide path given this theoretical framework, we ran various   financial simulations using the Vanguard Capital Markets Model. We   examined different risk-reward scenarios and the potential   implications of different glide paths and TDF approaches. The PDF is highly readable, I would say, and includes references to quant articles, for those that like that sort of thing. "You are your own worst enemy when it comes to investing. You might think that you can handle a lot of risk but when the market plummets you don't know exactly how you'll react. Many people panic and sell at the worst possible time, and that kills their returns. Will that be you? It's impossible to tell until it happens. Don't just invest in stocks. Put some of your money in bonds. For example TIPS, which are inflation adjusted treasury bonds (very safe, and the return is tied to the rate of inflation).  That way, when the stock market falls, you'll have a back-stop and you'll be less likely to sell at the wrong time. A 50/50 stock/bond mix is probably reasonable. Some recommend your age in bonds, which for you means 20% or so. Personally I think 50/50 is better even at your young age. Invest in broad market indexes, such as the S&P 500. Steer clear of individual stocks except for maybe 5-10% of your total. Individual stocks carry the risk of going out of business, such as Enron. Follow Warren Buffet's two rules of investing:  a) Don't lose money b) See rule a). Ignore the ""investment porn"" that is all around you in the form of TV shows and ads. Don't chase hot companies, sectors or countries.  Try to estimate what you'll need for retirement (if that's what your investing for) and don't take more risk than you need to. Try to maintain a very simple portfolio that you'll be able to sleep well with. For example, check into the coffeehouse investor  Pay a visit to the Bogleheads Forum - you can ask for advice there and the advice will be excellent. Avoid investments with high fees. Get advice from a good fee-only investment advisor if needed. Don't forget to enjoy some of your money now as well. You might not make it to retirement. Read, read, read about investing and retirement. There are many excellent books out there, many of which you can pick up used (cheap) through amazon.com." "Not unless you have something else to put up as collateral. The bank wants a basic assurance that you're not going to immediately move the money to the Caymans and disappear. 999 times out of 1000, the collateral for a home mortgage is the home itself (which you wouldn't be able to take with you if you decided to disappear), so signing up for a 30 year mortgage on a nonexistent house is probably going to get you laughed out of the bank. It's sometimes possible to negotiate something else as collateral; you may, for instance, have a portfolio of securities worth the loan principal, that you can put in escrow for the term of the loan (the securities will stay in your name and make you money, but if you default on the loan the bank goes to the escrow company and takes the portfolio for their own). The bank will consider the risk of value loss on the securities in the portfolio, and may ask for a higher collateral value or only allow a lower loan amount. In all cases, it's usually a bad idea to go into long-term personal debt just to get ""cheap money"" that you can use to beat the interest rate with some business plan or investment. If you have a business plan, take that to the bank with an LLC and ask for a business loan. The business itself, if the plan is sound, should become valuable, and the terms of business loans take that into account, allowing for a ""shrinking collateral"" transferring the initial personal risk of the loan to the business." This is going to be a bit of a shameless plug, but I've build a portfolio tracking website to track your portfolio and be able to share it (in read-only mode) as  well. It is at http://frano.carelessmusings.com and currently in beta. Most portfolio trackers are behind a login wall and thus will lack the sharing function you are looking for. Examples of these are: Yahoo Finance, Google Finance, Reuters Portfolios, MorningStart Portfolios, and many others. Another very quick and easy solution (if you are not trading too often) is a shared google docs spreadsheet. Gdocs has integration with google finance and can retrieve prices for stocks by symbol. A spreadsheet can contain the following: Symbol, Quantity, Avg. Buy Price, Price, P/L, P/L% and so on. The current price and P/L data can be functions that use the google finance API. Hope this helps, and if you check out my site please let me know what you think and what I could change. No, this isn't possible, especially not when you're trading a highly liquid stock like Apple. When you put in your buy order at $210, any other traders that have open limit sell orders with the correct parameters, e.g. price and volume, will have their order(s) filled. This will occur before you can put in your own sell order and purchase your own shares because the other orders are listed on the order book first. In the US, many tax-sheltered accounts like IRA's have specific rules against self-dealing, which includes buying and selling assets with yourself, so such a transaction would be prohibited by definition. Although I'm not entirely sure if this applies to stocks, the limitation described in the first paragraph still applies regardless. If this were possible, rest assured that high-frequency traders would take advantage of this tactic to manipulate share prices. (I've heard critics say that this does occur, but I haven't researched it myself or seen any data about it) You are diversified within a particular type of security. Notably the stock market. A truly diversified portfolio not only has multiple types of holdings within a single type of security (what your broad market fund does) but between different types. You have partially succeeded in doing this with the international fund - that way your risk is spread between domestic and international stocks. But there are other holdings. Cash, bonds, commodities, real estate, etc. There are broad index funds/ETFs for those as well, which may reduce your risk when the stock market as a whole tanks - which it does on occasion. "You should spend zero on your stock research company.  If the management of the company actually had persistent skill in picking stocks, they would not be peddling their knowledge to the retail market for a few hundred dollars.  They would rake in millions and billions by running a huge hedge fund and buy themselves a private island or something.  Unfortunately for them, hedge fund investors are not as gullible as retail investors and are more likely to sue when they discover they have been lied to. Many stock ""research"" companies are trying to manipulate you into paying too high a price for stocks.  They buy a small stock, recommend it, and then sell it at the artificially (and temporarily) high price.  Others are simply recommending stocks pretty much at random. You could do that just as well as they can, and for free. Portfolio performance evaluation is a complex problem.  The research company knows that its recommendations will ""make good money"" about half the time and that's enough to bring in a lot of uninformed people.  To know whether your portfolio actually did well you need to know how much risk there was in the portfolio and how a competing ""dumb"" portfolio with similar characteristics fared over the same time period.  And you need to repeat the experiment enough times (or long enough) to know the outcome wasn't luck.  I can say confidently that your portfolio performance doesn't back up the claim that the research company has skill above and beyond luck.  Much less $599 worth of skill. I can also say very confidently that there are no investors with a total of 20 thousand dollars to invest for whom purchasing stock recommendations is worth the cost, even if those recommendations do have some value.  Real stock information is valuable only to large investors because the per-dollar value is low. Please do not give money to or otherwise support a semi-criminal ""stock research"" enterprise."