Is there a government-mandated resource that lists the shareholders of a public company?
"The list of the public companies is available on the regulatory agencies' sites usually (for example, in the US, you can look at SEC filings). Otherwise, you can check the stock exchange listings, which show all the public companies traded on that exchange. The shareholders, on the other hand, are normally not listed and not published. You'll have to ask the company, and it probably won't tell you (and won't even know them all as many shares are held in the ""street name"" of the broker)." There are several problems with trying to get this data: "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." No, there is no such list, as the other answers mention it is practically impossible to compile one.  However you can see the institutional investors of a public company.  MSN Money has this information available in a fair amount of details.  For example see the Institutional Investors of GOOG 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.
**Lock-up period**  A lock-up period, also known as a lock in, lock out, or locked up period, is a predetermined amount of time following an initial public offering where large shareholders, such as company executives and investors representing considerable ownership, are restricted from selling their shares. Generally, a lock-up period is a condition of exercising an employee stock option. Depending on the company, the IPO lock-up period typically lasts between 90–180 days before these shareholders are allowed the right, but not the obligation, to exercise the option.  Lockups are designed to prevent insiders from liquidating assets too quickly after a company goes public.  ***  ^[ [^PM](https://www.reddit.com/message/compose?to=kittens_from_space) ^| [^Exclude ^me](https://reddit.com/message/compose?to=WikiTextBot&amp;message=Excludeme&amp;subject=Excludeme) ^| [^Exclude ^from ^subreddit](https://np.reddit.com/r/business/about/banned) ^| [^FAQ ^/ ^Information](https://np.reddit.com/r/WikiTextBot/wiki/index) ^| [^Source](https://github.com/kittenswolf/WikiTextBot)   ^] ^Downvote ^to ^remove ^| ^v0.24 Governments only have a few ways to get income: tax income, tax consumption, tax property (cars & boats), tax real estate, or tax services (hotel & meals). The National, state, county, city, and town taxing authorities determine what is taxed and what the rate will be to get enough money to run their share of the government. In general the taxing of real estate is done by the local government, but the ability to tax real estate is granted to them by the state. In the United States the local government decides, generally through a public hearing, what the rate will be. You can usually determine the current rate and tax value of the home prior to purchase. Though some jurisdictions limit the annual growth of value of the property, and then catch it up when the property is sold. That information is also in  public records.   All taxes are used to build roads, pay for public safety, schools, libraries, parks.. the list is very long. Failure to pay the tax will result in a lien on the property, which can result in your losing the property in a tax sale.  Most of the time the bank or mortgage company insists that your monthly payment to them includes the monthly portion of the estimated property tax, and the fire insurance on the property. This is called escrow. This makes sure the money is available when the tax is due. In some places is is paid yearly, on other places every six months. With an escrow account the bank will send the money to the government or insurance company. Here is the big secret: you have been indirectly paying property tax. The owner of the apartment , townhouse, or home you have been renting has been paying the tax from your monthly payment to them. "I am a tax lawyer and ALL the RESPONSES ABOVE are 1/2 Correct but also 1/2 Wrong and in tax law this means 100% WRONG (BECAUSE ANY PART INCORRECT UNDER TAX LAW will get YOU A HUGE PENALY and/or PRISON TIME by way of the IRS!  So in ESSENCE ALL the above answers are WRONG! Let me enlighten you to the correct answer in 5 parts, as people that do not practice tax law may understand (but you still probably will not understand, if you are NOT a Lawyer). 1) All public companies are corporations (shown by Ltd.), 2) only Shareholders of Public companies (ie, traded on the NYSE stock market) are never liable for debts of a bankrupt company, due to the concept of limited liability. 2) now Banks may ask a sole proprietorship (who wants to incorp. for example) to give collateral, such as owners stocks/bonds or his/her house, but then of course the loanee can tell the Bank No Thanks and find a lender that may charge higher interest rates but lend money to his company with little to NO collateral. 3) Of course not all companies are publicly traded and these are called private companies. 4)""limited liability"" has nothing to do directly with subsequent shareholders (the above answer is inaccurate!), it RELATES rather to INITIAL OWNERS INVESTMENT in their company, limiting the amount of owner loss if the company goes bankrupt. 5) Share Face-value is usually never related to this as shares are sold at market value in real life instances (above or below face-value), or the most money Investments Banks or owners can fetch for the shares they sell (not what the stock's face-value is set at upon issuance). Never forget, stocks are sold in our Capitalistic System to whomever pays the most, as it is that Buyer who gets to purchase the stock!" "The key difference I've found between a stock split and a stock dividend – of the exact same stock and class, as opposed to a spin-off – seems to be from the company's own accounting perspective.  There doesn't appear to be any actual transfer of value to the shareholder with either kind of transaction; i.e. in theory, each transaction would be immaterial to the value of your holdings. With respect to the company's accounting, a stock split affects the par value of the shares, whereas a stock dividend reduces the retained earnings account in order to increase paid-in or contributed capital. I found a good online source which explains the history behind this accounting difference: McGraw-Hill - Intermediate Accounting eBook, 6/e - Chapter 18 - Stock Dividends and Splits. Small quote: [...]   Besides being based on fallacious reasoning, accounting for stock   dividends by artificially reclassifying “earned” capital as “invested”   capital conflicts with the reporting objective of reporting   shareholders' equity by source. Despite these limitations, this   outdated accounting standard still applies. Since neither the corporation nor its shareholders apparently benefits   from stock dividends, why do companies declare them?23 Occasionally, a   company tries to give shareholders the illusion that they are   receiving a real dividend. Another reason is merely to enable the corporation to take advantage   of the accepted accounting practice of capitalizing retained earnings.   Specifically, a company might wish to reduce an existing balance in   retained earnings—otherwise available for cash dividends—so it can   reinvest the earned assets represented by that balance without   carrying a large balance in retained earnings. [...] There's a lot more on that page, before and after, worth reading. From another book: Google Books - Comparative Income Taxation, a Structural Analysis - page 314 - Stock Dividends. Small quote: The distribution of dividends in the form of stock or ""bonus"" shares   to existing shareholders typically involves a transfer for corporate   law purposes of retained earnings into stated capital.   It can been [sic] viewed as a deemed distribution of a cash   dividend to the shareholders followed by a corresponding contribution   to capital or as solely as an event at the corporate level which has   no effect on the shareholders whose economic interest in the   corporation is unchanged by the receipt of additional shares. The   systems have taken varied approaches to the stock dividend problem.    The treatment is in part a function of the rules dealing with   distributions of stated capital. [emphases above are mine] [... continues w/descriptions of different countries' tax treatments of the kinds of stock dividends. Includes U.S., Sweden, Japan,   Netherlands, Canada, Australia, U.K., France, Germany. ...] As far as why a corporation might want to capitalize earnings and reduce the equity otherwise available for dividends, I can only imagine that, ignoring taxes for a moment, that it may have something to do with capital ratios that need to be maintained for financing or regulatory purposes?  Yet, I remain curious. If I discover more on this then I'll update my answer. Additional resources:" "I am a tax lawyer and ALL the RESPONSES ABOVE are 1/2 Correct but also 1/2 Wrong and in tax law this means 100% WRONG (BECAUSE ANY PART INCORRECT UNDER TAX LAW will get YOU A HUGE PENALY and/or PRISON TIME by way of the IRS!  So in ESSENCE ALL the above answers are WRONG! Let me enlighten you to the correct answer in 5 parts, as people that do not practice tax law may understand (but you still probably will not understand, if you are NOT a Lawyer). 1) All public companies are corporations (shown by Ltd.), 2) only Shareholders of Public companies (ie, traded on the NYSE stock market) are never liable for debts of a bankrupt company, due to the concept of limited liability. 2) now Banks may ask a sole proprietorship (who wants to incorp. for example) to give collateral, such as owners stocks/bonds or his/her house, but then of course the loanee can tell the Bank No Thanks and find a lender that may charge higher interest rates but lend money to his company with little to NO collateral. 3) Of course not all companies are publicly traded and these are called private companies. 4)""limited liability"" has nothing to do directly with subsequent shareholders (the above answer is inaccurate!), it RELATES rather to INITIAL OWNERS INVESTMENT in their company, limiting the amount of owner loss if the company goes bankrupt. 5) Share Face-value is usually never related to this as shares are sold at market value in real life instances (above or below face-value), or the most money Investments Banks or owners can fetch for the shares they sell (not what the stock's face-value is set at upon issuance). Never forget, stocks are sold in our Capitalistic System to whomever pays the most, as it is that Buyer who gets to purchase the stock!" I believe you can easily make tresholds for what constitute a partial owner. If I work for GE and buy a share, I'm not exactly a partial owner.  Anything under 10% for companies making, I don't know, less than 50 Mil in revenue, you're an employee. Larger companies, 5%.  That's just an idea, could be refined but, yeah... "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." "Check your broker's IPO list. Adding a new stock to a stock exchange is called ""Initial Public Offering"" (IPO), and most brokers have a list of upcoming IPO's in which their clients can participate."