Do you have to be mega-rich to invest in companies pre-IPO?
"Short answer: No. Being connected is very helpful and there is no consequence by securities regulators against the investor by figuring out how to acquire pre-IPO stock. Long answer: Yes, you generally have to be an ""Accredited Investor"" which basically means you EARN over $200,000/yr yourself (or $300,000 joint) and have been doing so for several years and expect to continue doing so  OR have at least 1 million dollars of net worth ( this is joint worth with you and spouse). The Securities Exchange Commission and FINRA have put a lot of effort into keeping most classes of people away from a long list of investments." "No you don't have to be super-rich.  But... the companies do not have to sell you shares, and as others mention the government actively restricts and regulates the advertising and sales of shares, so how do you invest?  The easiest way to obtain a stake is to work at a pre-IPO company, preferably at a high level (e.g. Director/VP of under water basket weaving, or whatever).    You might be offered shares or options as part of a compensation package.  There are exemptions to the accredited investor rule for employees and a general exemption for a small number of unsolicited investors.  Also, the accredited investor rule is enforced against companies, not investors, and the trend is for investors to self-certify. The ""crime"" being defined is not investing in things the government thinks are too risky for you.  Instead, the ""crime"" being defined is offering shares to the public in a small business that is probably going to fail and might even be a scam from the beginning.   To invest your money in pre-IPO shares is on average a losing adventure, and it is easy to become irrationally optimistic.  The problem with these shares is that you can't sell them, and may not be able to sell them immediately when the company does have an IPO on NASDAQ or another market.  Even the executive options can have lock up clauses and it may be that only the founders and a few early investors make money." There are a couple of ways to buy into a private company.  First, the company can use equity crowd funding (approved under the JOBS act, you don't need to be an accredited investor for this).   The offering can be within one state (i.e. Intrastate offerings) which don't have the same SEC regulations but will be governed by state law.   Small companies (small assets, under $1 million) can be made under Regulation D, Rule 504.  For assets under $5 million, there is Rule 505, which allows a limited number of non-accredited investors.  Unfortunately, there aren't a lot of 504 and 505 issues. Rule 506 issues are common, and it does allow a few non-accredited investors (I think 35), but non-accredited investors have to be given lots of disclosure, so often companies use a Rule 506 issue but only for accredited investors.
You'd likely be subject to a lock-up period before you could sell the shares along with possibly having other rules about how you could sell your shares as you'd likely be seen as an insider that may have information that gives you an unfair advantage for selling the stock possibly. Depending on how far in advance you hold the shares, you may or may not have adjustments in the valuation and number of shares as some companies may do a split or reverse split when preparing for an IPO. A company I worked for in the late 1990s had an IPO and my stock options had a revised strike price because of a reverse stock split that was done prior to the IPO. "The Minnesota Mining and Manufacturing Company was established in 1902 as a private company.  It first raised public funds around 1903 but had a limited shareholder base.  By around 1929, it was reported as being tradeable as an OTC (over-the-counter) stock but it's likely that shares were traded well before this.  On 14 Jan 1946, the stock was listed on NYSE.  On 26 Sep 1962 it became a constituent of the the S&P 500 index.  On 9 Aug 1976 it became a constituent of the Dow Jones Industrial Average. In 2002, the company's name changed to 3M Co. It appears that the data on Crunchbase's ""IPO Date"" is wrong on this one. However, there are several companies that appear to do an ""IPO"" and have trading prices prior.  This is quite typical of early-stage biotech companies that trade OTC prior to a major exchange listing and ""IPO"". An example of an IPO happening after a company became publicly tradeable is NASDAQ:IMRN (Immuron). They had an ""IPO"" on Nasdaq on 9 Jun 2017, yet they had been trading as an OTC/Pink Sheet stock for months prior. They also have been listed in Australia since 30 Apr 1999. http://www.nasdaq.com/markets/ipos/activity.aspx?tab=pricings&month=2017-06 Another example is NASDAQ:GNTY (Guaranty Banchshares Inc) which had an ""IPO"" and NASDAQ listing in May 2017. This was a Nasdaq stock in 1998, went OTC/pink sheet stock in 2005. It has been paying regular dividends since that time. Clearly the word ""Initial"" is subjective!  http://www.nasdaq.com/markets/ipos/activity.aspx?tab=pricings&month=2017-05" "To add to @keshlam's answer slightly a stock's price is made up of several components: the only one of these that is known even remotely accurately at any time is the book value on the day that the accounts are prepared. Even  completed cashflows after the books have been prepared contain some slight unknowns as they may be reversed if stock is returned, for example, or reduced by unforeseen costs.  Future cashflows are based on (amongst other things) how many sales you expect to make in the future for all time. Exercise for the reader: how many iPhone 22s will apple sell in 2029? Even known future cashflows have some risk attached to them; customers may not pay for goods, a supplier may go into liquidation and so need to change its invoicing strategy etc.. Estimating the risk on future cashflows is highly subjective and depends greatly on what the analyst expects the exact economic state of the world will be in the future. Investors have the choice of investing in a risk free instrument (this is usually taken as being modelled by the 10 year US treasury bond) that is guaranteed to give them a return. To invest in anything riskier than the risk free instrument they must be paid a premium over the risk free return that they would get from that. The risk premium is related to how likely they think it is that they will not receive a return higher than that rate. Calculation of that premium is highly subjective; if I know the management of the company well I will be inclined to think that the investment is far less risky (or perhaps riskier...) than someone who does not, for example. Since none of the factors that go into a share price are accurately measurable and many are subjective there is no ""right"" share price at any time, let alone at time of IPO. Each investor will estimate these values differently and so value the shares differently and their trading, based on their ever changing estimates, will move the share price to an indeterminable level. In comments to @keshlam's answer you ask if there is enough information to work out the share price if a company buys out the company before IPO. Dividing the price that this other company paid by the relative ownership structure of the firm would give you an idea of what that company thought that the company was worth at that moment in time and can be used as a surrogate for market price but it will not and cannot accurately represent the market price as other investors will value the firm differently by estimating the criteria above differently and so will move the share price based on their valuation." You think that, but she's pretty much unemployable now.  That's the point of golden parachutes.  23 million is nothing to what she could have made if she was successful.  So she could have either been mega rich if she was successful, or have a decimated reputation if she failed.  It turned out to be the latter.  She's peaked and will never have a chance like that again. "If by ""most public companies"" you mean ALL public companies. Heck, even some non-public companies have to file 10-Ks.  OP, I'd avoid any exchange-based list (a public company may be de-listed, for example) and go right to the source: Edgar." There are several problems with your reasoning: if I buy one share of GOOGLE now for $830, I could have $860 within the end of tonight -- totally possible and maybe even likely. You can do the same thing with 1,000,000 shares of google, and it's just as likely to go down as go up.   if I were to invest $1,000.00 in gold to have $1,000.00 worth of gold, it's no different than keeping $1,000.00 in cash It's VERY different.  Gold can be just as volatile as stocks, so it certainly is different as just keeping it in cash. Benefits of a larger portfolio: GDP = total economic output (i.e. revenue), not income.  But for investments, income is what matters.  Add in productivity gains of around 2-3%/year due to technology and basic free market dynamics, and you will get closer to that 6% growth.  Some mention mergers and acquisitions, but really that's just another form of productivity gains by gaining economy of scale and synergies.  Now add in modest selective picking within the S&amp;P index towards those companies which are doing the most in our current economy. Yes, an investment can be made in a company before IPO. The valuation process is similar as that done for arriving at IPO or for a normal listed company. The difference may be the premium perceived for the idea in question. This would differ from one investor to other. For example, whether Facebook will be able to grow at the rate and generate enough revenues and win against competition is all a mathematical model based on projections. There are quite a few times the projection would go wrong, and quite a few times it would go correct. An individual investor cannot generally borrow from banks to invest into a company (listed or otherwise) (or for any other purpose) if he does not have any collateral that can be kept as security by the bank. An individual can get a loan only if he has sufficient collateral. The exceptions being small personal loans depending on one's credit history. The Private Equity placement arm of banks or firms in the business of private equity invest in start-up and most of the time make an educated guess based on their experience. More than half of their investments into start-ups end up as wiped out. An occasional one or two companies are ones that they make a windfall gain on.