What percent of a company are you buying when you purchase stock?
What percent of a company are you buying when you purchase stock? The percent of a company represented by a single share can be calculated by percent = 1/number_of_shares*100% Apple comprises 5,250,000,000 shares, so one share makes up about 1.9e-8% of a company, or 0.000000019% of Apple. 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. Your question has already been answered, you divide the amount of shares you own * 100% by the total amount of shares. However, I feel it is somewhat misleading to talk about owning a percentage of the company by owning shares. Strictly speaking, shares do not entitle you to a part of the company but instead give you a proportional amount of votes at shareholder meetings (assuming no funky share classes). What this means is that someone who owns 30% of a company's shares can't just grab 30% of the company's assets (factories, offices and whatever) and say that they are entitled to own this. What they actually own is 30% of the voting rights in this company, this means that they control 30% of all available votes when the company calls a vote on corporate actions, choosing a new director etc. which is how shareholders exert their influence on a company.
I bought 1000 shares of a $10 stock. When it doubled, I sold half, no need to be greedy. I watched the shares split 2 for one, and sold as it doubled and doubled again. In the end, I had $50,000 in cash pulled out and still had 100 shares. The shares are now worth $84K since they split 7 for one and trade near $120.  Had I just kept the shares till now, no sales, I'd have 14,000 shares of Apple worth $1.68M dollars.  $130K for an initial $10,000 investment is nothing to complain about, but yes, taking a profit can be the wrong thing. 25%? Was that all the potential the company had?  There's one question to ask, not where is the price today compared to last year or two years ago, but what are the company's prospects. Is the reason I bought them still valid? Look at your investment each quarter as if you were making the decision that day. I agree, diversification is important, so the choice is only hold or sell, not to buy more of a good company, because there are others out there, and the one sane thing Cramer says that everyone should adhere to is to not put your eggs in one basket. "Thanks for your reply. I think a lot of people are confused when talking about ownership, and I think it is a definitional issue.   When a company issues stock (the first time or anytime), what they are doing is ""selling"" the right to a percentage of the dividend. They are not actually selling parts of the company to you. Everyone thinks this way though, and that has to do with the Chicago School economists who perpetuated their ideas of ownership which is what everyone know thinks is the case. This way of thinking about corporations and ownership is just wrong (not ethically), just erroneous.   As I stated before, Lynn Stout of Cornell University explains this really well. I would encourage anyone to read more about it." "Recently, I asked about what the company valuation is and how many   shares does my 4% represent.CFO told me that there is no point to talk   about ""shares"" or ""stock"" since the company is not public. Is it   right? No, it is wrong. Shares and stocks exist regardless of how they can be traded. Once a company is formed, there are stocks that belong to the owners in the proportion of the ownership. They may not exist physically, but they do exist on paper. As an owner of 5% of the company, you own 5% of the company stocks. I asked if my investor portion equity will be subjected under a   vesting schedule, CFO said yes. That doesn't make sense to me, because   I bought those 4%? Aren't those supposed to be fully vested? I agree   to my employee equity to be vested. Doesn't make sense to me either, since your money is already in their pocket. But I'm not sure if its illegal. If that's what is written in the signed contract - then may be its possible to have that situation. But it doesn't make much sense, because these shares are granted to you in return to your money, not some potential future work (as the 1% employee's portion). You already gave the money, so why wouldn't they be vested? Best to read the contract upon which you gave them your money, I really hope you have at least that and not just gave them a check...." I think you are mixing up the likelihood of making a profit with the amount of profit. The likelyhood of profit will be the same, because if you buy $100 worth of shares and the price moves up you will make a profit. If you instead bought $1000 worth of the same shares at the same price and the price moved up you would once again make a profit. In fact if you don't include commissions and other fees, and you buy and sell at the same prices, you percentage profit would be the same.  For example, if you bought at $10 and sold at $12, you percentage gain of 20% would be the same no matter how many shares you bought (not including commissions). So if you bought $100 worth your gain would have been 20% or $20 and if you bought $1000 worth your gain would have been 20% or $200. However, if you include commissions, say $10 in and $10 out, your net profit on $100 would have been $0 (0%) and your net profit on $1000 would have been $180 (18%). Stock basically implies your ownership in the company. If you own 1% ownership in a company, the value of your stake becomes equal to 1% of the valuation of the entire company. Dividends are basically disbursal of company's profits to its shareholders. By holding stocks of a company, you become eligible to receiving dividends proportional to your ownership in the company. Dividends though are not guaranteed, as the company may incur losses or the management may decide to use the cash for future growth instead of disbursing it to the shareholders. For example, let's say a company called ABC Inc, is listed on NYSE and has a total of 1 million shares issued. Let's say if you purchase 100 stocks of ABC, your ownership in ABC will become Let's say that the share price at the time of purchase was $10 each. Total Investment = Stock Price * Number of Stocks Purchased = $10 * 100 = $1,000 Now, let's say that the company declares a dividend of $1 per share. Then,  Dividend Yield = Dividend/Stock Price = $1/$10 = 10% If one has to draw analogy with other banking products, one can think of stock and dividend as Fixed Deposits (analogous to stock) and the interest earned on the Fixed Deposit (analogous to dividend). A company is basically divided into shit the company owns (assets) and shit the company owes to people (liabilities). So what about ownership? Ownership is called equity and on a simplistic level equity = asset - liabilities. But a better view of that should be asset = liabilities + equity. Which means a company's assets  is separated into things owned by debtors (e.g. Banks) and things owned by owners(founders and you). So when you are offered one percent, you are basically owning one percent of the company.   Not the best explanation, but should be a simplified one.   Here's where the options come in. When you are offered options. That means you have the option of redeeming the shares at a lower price than market. However these options are not usually immediately redeemable, there's usually a minimum amount of time you have to work at a company to be able to use these options. This period is called the vesting period. "Does your company offer a 401k? or similar pre-tax retirement plans? Is your company a publicly traded company? These questions are important, basically the key to any of your investments should be diversification. This means buying more than one kind of investment, amongst stock(s), bonds, real estate or more. The answer to ""How Much"" of your salary should go to company stock, is subjective. I personally would contribute the max toward a retirement plan or even post-tax savings, which would be invested in a variety of public companies.  Hope that helps." Depends entirely on the stock and your perception of it. Would you buy it at the current price? If so, keep it. Would you buy something else? If so, sell it and buy that. "Yes, there are situations where a stock is a bad buy in spite of a low PE. PE ratio tells you the current share price divided by the prior 4 quarters earnings per share. It does not consider: Imagine someone walked up to you and said, ""Do you want to buy a piece of my business? I'll sell you 1% of it for $1000. Last year the business earned $25000."" A quick calculation shows a PE of 4 [$1000/($25000 *.01)]. Even though this PE is comparatively low, you wouldn't buy in without a lot more info. What kinds of things might you ask? PE is one tiny component of an informed investment decision." One of my university professors suggested doing this systematically to get access to shareholder meetings where there is typically a nice dinner involved. As long as the stock price + commission is less than the price of a nice restaurant it's actually not a bad idea. Say the company has created 500 shares [or whatever number]. You have 10 shares [equivalent of 2%]. Now when new capital is needed, generally more shares are created. Say they create 100 more shares and sell it to venture capital to raise funds. After this happens; Total Shares: 500+100 = 600 You own: 10 shares Your Ownership % = 1.66% down from 2% Like wise for other older shareholder. The New Venture guy gets 16.66% of ownership.   More funds would mean more growth and overall the value of your 10 shares would be more depending on the valuation. Typically, preferred shares come with one or both different benefits - a disproportionate share of votes, say 10 votes per share vs the normal 1, or a preferred dividend.  The vote preference is great for the owner(s) looking to go public, but not lose control of the company. Say, I am a Walton (of Walmart fame) and when I went public, I sold 80% of the (1000 share total) company. But, in creating the share structure, 20% of shares were assigned 10 votes each. 800 shares now trade with 800 votes, 200 shares have 10 votes each or 2000 votes. So, there are still the 1000 shares but 2800 votes. The 20% of shares now have 2000/2800 or 71% of the total votes. So, my shares are just less than half ownership, but over 78% of votes.  Preferred dividend is as simple as that, buy Stock A for ownership, or (same company) Stock A preferred shares which have ownership and $1/yr dividend.  Edited to show a bit more math. I use a simple example to call out a total 1000 shares. The percentages would be the same for a million or billion shares if 20% were a 10 vote preferred. Would you consider the owner of a company to be supporting the company? If you buy stock in the company you own a small part of that company. Your purchase also increases the share price, and thus the value of the company. Increased value allows the company to borrow more money to say expand operations. The affect that most individuals might have on share price is very very small. That doesn't mean it isn't the right thing for you to do if it is something you believe in. After all if enough people followed those same convictions it could have an impact on the company. "Companies normally do not give you X% of shares, but in effect give you a fixed ""N"" number of shares. The ""N"" may translate initially to X%, but this can go down. If say we began with 100 shares, A holding 50 shares and B holding 50 shares. As the startup grows, there is need for more money. Create 50 more shares and sell it at an arranged price to investor C. Now the percentage of each investor is 33.33%. The money that comes in will go to the company and not to A & B.   From here on, A & C together can decide to slowly cut out B by, for example: After any of the above the % of shares held by B would definitely go down." "Not sure I fully understand your question but my take on it is this: There a lot of people out there that admire companies and own the stock just because they like the company. For example, I know some kids who own Disney stock. They only have a share or two but they keep it because they want to say ""I own a part of Disney.""  Realistically speaking, if they hold or sell the stock it is so minuscule to have any realizable affect on the overall value of the stock which does not really make the company look better from an investor perspective. However, if a company has people that just want to own the stock just like your uncle are indeed ""better"" because they must have provided a product or service that is valued intrinsically."