Who owned my shares before me?
The answer in theory is yes. The answer in reality is no. Let me explain: Combine all of these lists and perhaps you could get a complete record. Not sure about US. In India all Demat shares have a unique identity. Incase of splits or merging of shares, new ID's are created maintaining the linking of older ID's. The Demat holding entity would have all the history of a particular stock. It is mandatory to disclose the name of the person / entity who has purchased the shares. Of Course if shares are purchased by Fund houses or other aggregators then its the aggregators name that would be available. All this data is confidential and not meant for common consumption. "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." A lot will depend on wether you have in your possession the physical share documents or just numbers in your brokerage portfolio. Electronic shares are not traceable as they do not exist as individual entities. ETrade certainly knows who bought how much, but no concept of which ones. Lets say ET buys 1000 shares of Acme, their database looks like this: Now they sell 400 shares to Bob: Bob sells 200, Alice buys 100: ( skipped one transaction for brevity ) Did Alice get 100 shares out of ET's original 1000, or did she get 100 shares that were previously owned by Bob? Or 27 from ET and 73 from ET? Another, less exact way to picture the process is one share is 1ml of liquid. If you return 50ml to the pot it becomes indistinguishable from the rest.
You didn't identify the fund but here is the most obvious way: Some of the stocks they owned could had dividends. Therefore they would have had to pass them on to the investors. If the fund sold shares of stocks, they could have capital gains. They would have sold stocks to pay investors who sold shares. They also could have sold shares of stock to lock in gains, or to get out of positions they no longer wanted.  Therefore a fund could have dividends, and capital gains, but not have an increase in value for the year. Some investors look at how tax efficient a fund is, before investing. The reason for such differences is that there's no source to get this information. The companies do not (and cannot) report who are their shareholders except for large shareholders and stakes of interest. These, in the case of GoPro, were identified during the IPO (you can look the filings up on EDGAR). You can get information from this or that publicly traded mutual fund about their larger holdings from their reports, but private investors don't provide even that. Institutional (public) investors buy and sell shares all the time and only report large investments. So there's no reliable way to get a snapshot picture you're looking for. "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." "There is no unique identifier that exists to identify specific shares of a stock. Just like money in the bank, there is no real reason to identify which exact dollar bills belong to me or you, so long as there is a record that I own X bills and I can access them when I want. (Of course, unlike banks, there is still a 1:1 relationship between the amount I should own and the amount they actually hold). If I may reach a bit, the question that I assume you are asking is how are shared actually tracked, transferred, and recorded so that I know for certain that I traded you 20 Microsoft shares yesterday and they are now officially yours, given that it's all digital. While you can technically try and request a physical share certificate, it's very cumbersome to handle and transfer in that form.  Ownership of shares themselves are tracked for brokerage firms (in the case of retail trading, which I assume is the context of this question as we're discussion personal finance). Your broker has a record of how many shares of X, Y, and Z you own, when you bought each share and for how much, and while you are the beneficial owner of record (you get dividends, voting rights, etc.) your brokerage is the one who is ""holding"" the shares. When you buy or sell a stock and you are matched with a counterparty (the process of which is beyond the scope of this question) then a process of settlement comes into play. In the US, settlement takes 3 working days to process, and technically ownership does not transfer until the 3rd day after the trade is made, though things like margin accounts will allow you to effectively act as if you own the shares immediately after a buy/sell order is filled. Settlement in the US is done by a sole source, the Depository Trust & Clearing Corporation (DTCC). This is where retail and institutional trade all go to be sorted, checked and confirmed, and ultimately returned to the safekeeping of their new owners' representatives (your brokerage). Interestingly, the DTCC is also the central custodian for shares both physical and virtual, and that is where the shares of stock ultimately reside." You'll own whatever fraction you bought. To own the company (as in, boolean - yes or no) you need to buy 100% of the outstanding stock. RE controlling the company, in general the answer is yes - although the mechanism for this might not be so straight forward (ie. you may have to appoint board members and may only be able to do so at pre-set intervals) and there may be conditions in the company charter designed to stop this happening. Depending on your jurisdiction certain ownership percentages can also trigger the need to do certain things so you may not be able to just buy 50% - in Australia when you reach 20% ownership you have to launch a formal takeover bid. "I worked for a small private tech company that was aquired by a larger publicly traded tech company.  My shares were accelerated by 18 months, as written in the contract.  I excercised those shares at a very low strike price (under $1) and was given an equal number of shares in the new company.  Made about $300,000 pre tax.  This was in 2000. (I love how the government considered us ""rich"" that year, but have never made that amount since!)" "There are two scenarios to determine the relevant date, and then a couple of options to determine the relevant price. If the stocks were purchased in your name from the start - then the relevant date is the date of the purchase. If the stocks were willed to you (i.e.: you inherited them), then the relevant date is the date at which the person who willed them to you had died. You can check with the company if they have records of the original purchase. If it was in ""street name"" - they may not have such records, and then you need to figure out what broker it was to hold them. Once you  figured out the relevant date, contact the company's ""investor relationships"" contact and ask them for the adjusted stock price on that date (adjusted for splits/mergers/acquisitions/whatever). That would be the cost basis per share you would be using. Alternatively you can research historical prices on your favorite financial information site (Google/Yahoo/Bloomberg or the stock exchange where the company is listed). If you cannot figure the cost basis, or it costs too much - you can just write cost basis as $0, and claim the whole proceeds as gains. You'll pay capital gains tax on the whole amount, but that may end up being cheaper than conducting the investigation to reveal the actual numbers." RonJohn is right, all shares are owned by someone.  Depending on the company, they can be closely held so that nobody wants to sell at a given time.  This can cause the price people are offering to rise until someone sells.  That trade will cause an adjustment in the ticker price of that stock.  Supply and demand at work.  Berkshire Hathaway is an example of this.  The number of shares is low, the demand for them is high, the price per share is high. In most mutual funds you delegate voting rights to the investment manager.  The securities are typically held by a third party bank as part of the requirements for Securities Investor Protection Corporation (SIPC).  You own equity in that mutual fund, which owns the shares (but are held by a third party); you don't have direct ownership as in most cases that would result in you owning fractions of shares. "Many thanks for thedetailed  response, appreciate it. But I am still not clear on the distinction between a public company and the equity holders. Isn't a public company = shareholders + equity holders? Or do you mean ""company"" = shareholders+equity holders + debt holders?" ...ok, you understand that the board of directors don't collect all of the profit from a company, and that shareholders can sell stock, right?   It his honestly confusing to me that you have a problem with shareholders being given ownership in a company that is spun off from the company that they own. Yes, there is a delay between when you buy a stock and when you actually take ownership of it.  This is called the settlement period. The settlement period for US equities is T+2 (other markets have different settlement periods), meaning you don't actually become a shareholder of record until 2 business days after you buy.  Conversely, you don't stop being a shareholder of record until 2 business days after you sell. Presumably at some point in the (far) future all public markets will move to same-day changes of ownership, at which point companies will stop making announcements of the form all shareholders of record as of September 22nd and will switch to announcements of the form all shareholders of record as of September 22nd at 13:00 UTC As you can see at https://www.google.com/finance?q=NASDAQ%3AAAPL the number of apple shares at this very moment is 5.25B, so if you have 1 share you own 1 / 5.25B of the company. "You cannot determine this solely by the ticker length. However, there are some conventions that may help steer you there. Nasdaq has 2-4 base letters BATS has 4 base letters NYSE equity securities have 1-4 base letters. NYSE Mkt (formerly Amex) have 1-4 base letters. NYSE Arca has 4 base letters OTC has 4 base letters. Security types other than equities may have additional letters added, and each exchange (and data vendors) have different conventions for how this is handled. So if you see ""T"" for a US-listed security it would be only be either NASDAQ, NYSE or NYSE Mkt. If you see ""ANET"" then you cannot tell which exchange it is listed on.  (In this case, ANET Arista Networks is actually a NYSE stock). For some non-equity security types, such as hybrids, and debt instruments, some exchanges add ""P"" to the end for ""preferreds"" (Nasdaq and OTC) and NYSE/NYSE Mkt have a variety of methods (including not adding anything) to the ticker.  Examples include NYSE:TFG, NYSEMkt:IPB, Nasdaaq: AGNCP, Nasdaq:OXLCN.  It all becomes rather confusing given the changes in conventions over the years. Essentially, you require data that provides you with ticker, listing location and security type. The exchanges allocate security tickers in conjunction with the SEC so there are no overlaps.  eg. The same ticker cannot represent two different securities. However, tickers can be re-used.  For example, the ticker AB has been used by the following companies:" As others have said, it depends on the brokerage firm.  My broker is Scottrade. With Scottrade the commission is assessed and applied the moment the order is filled. If I buy 100 shares of XYZ at $10 a share then Scottrade will immediately deduct $1007.02 out of my account. They add the commission and fees to the buy transaction. On a sale transaction they subtract the commission and fees from the resulting money. So if I sell 100 shares of XYZ at $11 a share I will get 1,092.98 put into my account, which I can use three business days later.