Borrowed shares how are they tracked?
Brokerage firms are required to report the number of shares being shorted.  This information is reported to the exchange (NYSE of NASDAQ) and is made public.  Most financial sites indicate the number of shares being shorted for a particular stock.  The image below from Yahoo finance shows 3.29 million shares of CMG were being shorted at the close of 9-28-2012.  This is over 12% of the total outstanding shares of CMG.  For naked short selling additional information is tracked.  If the brokerage is unable to borrow shares to deliver before the settlement date of a short sale then the transaction is recorded as fails-to-deliver.  No money or shares are exchanged since the brokerage is unable to deliver the shares that were agreed upon.  A large amount of fails-to-deliver transactions for a stock usually indicates an excessive amount of naked shorting.  When investors and brokerage firms start to aggressively short a stock they will do so without having borrowed the shares to sell.  This will result in a large amount of naked short selling.  When there are a large number of naked short sellers not all the sellers will be able to borrow the necessary shares before the settlement date and many fails-to-deliver transactions will be recorded. The SEC records the number of fails-to-deliver transactions. The table below summarizes the fails-to-deliver transactions from 1-1-2012 through 9-14-2012 (data obtained from here). The “Ext Amount” column shows the total dollar value of the transactions that failed ( i.e. Fail Qty * Share price ).  The “Volume” column is the total number of shares traded in the same time period.  The “% Volume” shows the percentage of shares that failed to deliver as a percentage of the total market volume. The table orders the data in descending order by the quantity of shares that were not delivered.  Most of the companies at the top of the list no longer exist.  For many of these companies, the quantity of shares that failed to deliver where many multiples of the number of shares traded during the same time period.  This indicates massive naked short selling as many brokerages where unable to find shares to borrow before the settlement date. More information here.
Generally the number of shares of a U.S. exchange-listed stock which have been shorted are tracked by the exchange and reported monthly.  This number is usually known as the open short interest.  You may also see a short interest ratio, which is the short interest divided by the average daily volume for the stock. The short interest is available on some general stock data sites, such as Yahoo Finance (under Key Statistics) and dailyfinance.com (also on a Key Statistics subpage for the stock). You can obtain a stocklist if you file a lawsuit as a shareholder against the company demanding that you receive the list. It's called an inspection case. The company then has to go to Cede and/or the Depository Trust Company who then compiles the NOBO COBO list of beneficiary stockholders. SEC.gov gives you a very limited list of people who have had to file 13g or 13d or similar filings. These are large holders. To get the list of ALL stockholders you have to go through Cede. I would track it using a regular asset account.  The same way I would track the value of a house, a car, or any other personal asset. ETA: If you want automatic tracking, you could set it up as a stock portfolio holding shares of the GLD ETF.  One share of GLD represents 1/10 ounce of gold.  So, if you have 5 ounces of gold, you would set that up in Quicken as 50 shares of GLD. "There are several such ""lists."" The one that is maintained by the company is called the shareholder registry. That is a list that the company has given to it by the brokerage firms. It is a start, but not a full list, because many individual shareholders hold their stock with say Merrill Lynch, in ""street name"" or anonymously. A more useful list is the one of institutional ownership maintained by the SEC. Basically, ""large"" holders (of more than 5 percent of the stock) have to register their holdings with the SEC. More to the point, large holders of stocks, the Vanguards, Fidelitys, etc. over a certain size, have to file ALL their holdings of stock with the SEC. These are the people you want to contact if you want to start a proxy fight. The most comprehensive list is held by the Depositary Trust Company. People try to get that list only in rare instances." Some personal finance packages can track basis cost of individual purchase lots or fractions thereof. I believe Quicken does, for example. And the mutual funds I'm invested in tell me this when I redeem shares. I can't vouch for who/what would make this visible at times other than sale; I've never had that need. For that matter I'm not sure what value the info would have unless you're going to try to explicitly sell specific lots rather than doing FIFO or Average accounting. "Assuming that the ETF is tracking an index, is there a reason for not looking at using details on the index?  Typically the exact constituents of an index are proprietary, and companies will not publish them publicly without a license.  S&P is the heavyweight in this area, and the exact details of the constituents at any one time are not listed anywhere.  They do list the methodology, and announcements as to index changes, but not a full list of actual underlying constituents. Is there a easy way to automatically (ie. through an API or something, not through just reading a prospectus) get information about an ETF's underlying securities? I have looked for this information before, and based on my own searches, in a word: no.  Index providers, and providers of APIs which provide index information, make money off of such services.  The easiest way may be to navigate to each provider and download the CSV with the full list of holdings, if one exists.  You can then drop this into your pipeline and write a program to pull the data from the CSV file.  You could drop the entire CSV into Excel and use VBA to automagically pull the data into a usable format. For example, on the page for XIU.TO on the Blackrock site, after clicking the ""All Holdings"" tab there is a link to ""Download holdings"", which will provide you with a CSV.  I am not sure if all providers look at this. Alternatively, you could write the ETF company themselves." "A ""stock price"" is nothing but the price at which some shares of that stock were sold on an exchange from someone willing to sell those shares at that price (or more) to someone willing to buy them at that price (or less). Pretty much every question about how stock prices work is answered by the paragraph above, which an astonishingly large number of people don't seem to be aware of. So there is no explicit ""tracking"" mechanism at all. Just people buying and selling, and if the current going price on two exchanges differ, then that is an opportunity for someone to make money by buying on one exchange and selling on the other - until the prices are close enough that the fees and overhead make that activity unprofitable. This is called ""arbitrage"" and a common activity of investment banks or (more recently) hedge funds and specialized trading firms spun off by said banks due to regulation." "Shares do not themselves carry any identity. Official shareholders are kept at the registrar.  In the UK, this may be kept up to date and publicly accessible.  In the US, it is not, but this doesn't matter because most shares are held ""in street name"". For a fully detailed history, one would need access to all exchange records, brokerage records, and any trades transacted off exchange. These records are almost totally unavailable." Two more esoteric differences, related to the same cause... When you have an outstanding debit balance in a margin the broker may lend out your securities to short sellers.  (They may well be able to lend them out even if there's no debit balance -- check your account agreement and relevant regulations).   You'll never know this (there's no indication in your account of it) unless you ask, and maybe not even then. If the securities pay out dividends while lent out, you don't get the dividends (directly).  The dividends go to the person who bought them from the short-seller.  The short-seller has to pay the dividend amount to his broker who pays them to your broker who pays them to you.  If the dividends that were paid out by the security were qualified dividends (15% max rate) the qualified-ness goes to the person who bought the security from the short-seller.  What you received weren't dividends at all, but a payment-in-lieu of dividends and qualified dividend treatment isn't available for them.   Some (many?  all?) brokers will pay you a gross-up payment to compensate you for the extra tax you had to pay due to your qualified dividends on that security not actually being qualified. A similar thing happens if there's a shareholder vote.  If the stock was lent out on the record date to establish voting eligibility, the person eligible to vote is the person who bought them from the short-seller, not you.  So if for some reason you really want/need to vote in a shareholder vote, call your broker and ask them to journal the shares in question over to the cash side of your account before the record date for determining voting eligibility. "I keep spreadsheets that verify each $ distribution versus the rate times number of shares owned. For mutual funds, I would use Yahoo's historical data, but sometimes shows up late (a few days, a week?) and it isn't always quite accurate enough. A while back I discovered that MSN had excellent data when using their market price chart with dividends ""turned on,"" HOWEVER very recently they have revamped their site and the trusty URLs I have previously used no longer work AND after considerable browsing, I can no longer find this level of detail anywhere on their site !=( Happily, the note above led me to the Google business site, and it looks like I am ""back in business""... THANKS!" "Not a bond holder, but when we get dividends we usually just buy up a benchmark index tracking ETF unless/until we're ready to rebalance our portfolio. Most of the trades in the day are earmarked with the reason ""spending cash"". I'd assume it's similar for bond holders and coupons." "There is probably a better way, but you can do the following: (1) Right click on the right pointing arrow next to the ""1-20 of xx rows"" message at the bottom right of the table, and select ""Copy link location"" (2) Paste that into the location (3) At the end of the pasted text there is a ""&output=json"", delete that and everything after it. (4) hit enter What you get is a page that displays the set of securities returned by and in a very similar display to the ""stock screener"" without the UI elements to change your selections. You can bookmark this page." The portfolio manager at Value Research Online does this very nicely. It tracks the underlying holdings of each fund, yielding correct calculations for funds that invest across the board. Take a look at the screenshot from my account:  If you have direct equity holdings (e.g., not through a mutual fund), that too gets integrated. Per stock details are also visible. You need to track every buy and sell to track your gains, or more likely, losses. Yes, you report each and every transactions. Pages of schedule D. "Treasury stock is not really represented in the Balance Sheet as a ""Treasury stock"" line item in the assets.  Some companies will break out Treasury Shares as a line item in the ""Shareholders Equity"" heading of the balance sheet but Apple hides it in the ""Shares Issued and Outstanding"" counts under the ""Shareholders Equity"" heading.  As of the most recent Q2 2017 quarterly report There are 5,205,815,000 shares issued against 5,336,166,000 shares outstanding.  This indicates that Apple is retaining about 130,351,000 shares in treasury. On the Q1 10-Q you can see that Apple had 5,255,423,000 shares issued which indicates roughly 49mm shares were repurchased by the end of Q2.  You can roughly verify this by looking at page 18 of the Q2 filing in the summary of the share repurchase program.  Repurchased as part of an Accelerated Share Repurchase arrangement bleeds between quarters but from February 2017 through May 2017 there have been 17.5mm shares repurchased.  31mm shares were also repurchased on the open market in Q2.    The ""shares issued"" total is on a downward trend as part of Apple's share repurchase initiative that has been underway for the last couple of years."