Approximation of equity value for company in default
"Generally ""default"" means that the company cannot pay off their debts, and since debt holders get paid before equity holders, their equity would be effectively worthless. That said, companies can emerge from Chapter 11 bankruptcy (reorganization) and retain equity value, but it is rare. Most times, stocks are de-listed or frozen on stock exchanges, and company's reorganization plan will cancel all existing equity shares, instead focusing all of their attention on paying back as much debt as possible. If the company issues new equity after reorganizing, it might provide a way for holders of the original equity to exchange their shares for the new equity, but it is rare, and the value is usually significantly less that the value of the original equity."
"Lots of questions: In general, no. Market Capitalization and Equity represent 2 different things.  Equity first, the equity of a firm is the value of the assets (what it owns) less its liabilities (what it owes) and consists (broadly) of two components - share capital (what the firm gets when it sells to investors as part of an IPO or subsequent share issue) and retained earnings (what the firm has as a result of making profits and not paying them out as dividends). This is the theoretical liquidation value of the firm - what it is worth if it stops trading, sells all its assets and pays all its debts. Market Capitalization is the current value of the future cash flow of the firm as perceived by the market - the value today of all the dividends that the firm will pay in the future for as long as it exists. This is the theoretical going concern value of the firm - what it is worth as a functioning business. In general, Market Capitalization is bigger than Equity - if it isn't the firm is worth more as scrap than as an operating business. Um ... no. If you don't have any shares then you are by definition not an owner. Having shares is what makes you an owner. What I think you mean is, is it possible for the owner(s) of a private company to sell all of its shares when it goes public? The answer is yes. It is uncommon for a start-up owner to do this but it is standard practice for ""corporate raiders"" who buy failing companies, take them private, restructure them and then take them public again - they have done their job and they are not interested in maintaining an ownership stake. Nope. See above and below. Not at all, equity is an accounting construct and market capitalization is about market sentiment. Consider the following hypothetical firm: It has $1m in equity, it makes $4m in profit and will do for the foreseeable future, it pays all of that $4m out as dividends - if we work on a simple ROI of 10% then this firm is worth $40m dollars - way more than its equity." "From Wikipedia: Usage Because EV is a capital structure-neutral metric, it is useful when   comparing companies with diverse capital structures. Price/earnings   ratios, for example, will be significantly more volatile in companies   that are highly leveraged. Stock market investors use EV/EBITDA to compare returns between   equivalent companies on a risk-adjusted basis. They can then   superimpose their own choice of debt levels. In practice, equity   investors may have difficulty accurately assessing EV if they do not   have access to the market quotations of the company debt. It is not   sufficient to substitute the book value of the debt because a) the   market interest rates may have changed, and b) the market's perception   of the risk of the loan may have changed since the debt was issued.   Remember, the point of EV is to neutralize the different risks, and   costs of different capital structures. Buyers of controlling interests in a business use EV to compare   returns between businesses, as above. They also use the EV valuation   (or a debt free cash free valuation) to determine how much to pay for   the whole entity (not just the equity). They may want to change the   capital structure once in control. Technical considerations Data availability Unlike market capitalization, where both the market price and the   outstanding number of shares in issue are readily available and easy   to find, it is virtually impossible to calculate an EV without making   a number of adjustments to published data, including often subjective   estimations of value: In practice, EV calculations rely on reasonable estimates of the   market value of these components. For example, in many professional   valuations: Avoiding temporal mismatches When using valuation multiples such as EV/EBITDA and EV/EBIT, the   numerator should correspond to the denominator. The EV should,   therefore, correspond to the market value of the assets that were used   to generate the profits in question, excluding assets acquired (and   including assets disposed) during a different financial reporting   period. This requires restating EV for any mergers and acquisitions   (whether paid in cash or equity), significant capital investments or   significant changes in working capital occurring after or during the   reporting period being examined. Ideally, multiples should be   calculated using the market value of the weighted average capital   employed of the company during the comparable financial period. When calculating multiples over different time periods (e.g. historic   multiples vs forward multiples), EV should be adjusted to reflect the   weighted average invested capital of the company in each period. In your question, you stated: The Market Cap is driven by the share price and the share price is   determined by buyers and sellers who have access to data on cash and   debts and factor that into their decision to buy or sell. Note the first point under ""Technical Considerations"" there and you will see that the ""access to data on cash and debts"" isn't quite accurate here so that is worth noting. As for alternatives, there are many other price ratios one could use such as price/earnings, price/book value, price/sales and others depending on how one wants to model the company. The better question is what kind of investing strategy is one wanting to use where there are probably hundreds of strategies at least. Let's take Apple as an example. Back on April 23, 2014 they announced earnings through March 29, 2014 which is nearly a month old when it was announced. Now a month later, one would have to estimate what changes would be made to things there. Thus, getting accurate real-time values isn't realistic. Discounted Cash Flow is another approach one can take of valuing a company in terms of its future earnings computed back to a present day lump sum." "The simple answer for the so-called 'Rule of X' would be found by: In your case: Update:  If you want an approximation closer to the nominal ""Rule of 72"" value, use this equation that incorporates a better approximation for the natural log. The ""Rule of 72"" fits this for an interest rate of 7.79% for a growth multiple of 2: The rule of 72 comes from by approximating the natural logarithms as such: The 2 is the multiple of growth. The rate r here is not in percent, so to change to percent (say, R) you have to multiply by 100: The number 72 is often used because it is easier to divide evenly than 69.3 and is a better fit approximation for the natural log and common interest rates.  If you need more, you can find all this on Wikipedia: https://en.wikipedia.org/wiki/Rule_of_72#Derivation" "Accounts track value: at any given time, a given account will have a given value. The type of account indicates what the value represents. Roughly: On a balance sheet (a listing of accounts and their values at a given point in time), there is typically only one equity account, representing net worth, I don't know much about GNUCash, though. Income and expenses accounts do not go on the balance sheet, but to find out more, either someone else or the GNUCash manual will have to describe how they work in detail. Equity is more similar to a liability than to assets. The equation Assets = Equity + Liabilities should always hold; you can think of assets as being ""what my stuff is worth"" and equity and liabilities together as being ""who owns it."" The part other people own is liability, and the part you own is equity. See balance sheet, accounting equation, and double-entry bookkeeping for more information. (A corporate balance sheet might actually have more than one equity entry. The purpose of the breakdown is to show how much of their net worth came from investors and how much was earned. That's only relevant if you're trying to assess how a company has performed to date; it's not important for a family's finances.)" Somewhat.  The balance sheet will include liabilities which as Michael Kjörling points out would tell you the totals for the debt which would often be loans or bonds depending on one's preferred terminology.  However, if the company's loan was shorter than the length of the quarter, then it may not necessarily be reported is something to point out as the data is accurate for a specific point in time only. My suggestion is that if you have a particular company that you want to review that you take a look at the SEC filing in full which would have a better breakdown of everything in terms of assets, liabilities, etc. than the a summary page.  http://investor.apple.com/ would be where you could find a link to the 10-Q that has a better breakdown though it does appear that Apple doesn't have any bonds outstanding.  There are some companies that may have little debt due to being so profitable in their areas of business. I'll give you my quick and dirty way to value a company: A quick and dirty valuation could be: equity + 10 times profit. This quick way protects you from investing in companies in debt, or losing money. To go more in-depth you need to assess future profit, etc. I recommend the book from Mary Buffett about Warren Buffett's investing style. "Complex matter that doesn't boil down to a formula.   The quant aspect could be assessed by calculating WACCs under various funding scenarii and trying to minimize, but it is just one dimension of it.  The quali aspects can vary widely depending on the company, ownership structure, tax environment and business needs and it really can't be covered even superficially in a reddit comment...  Few examples from the top of my mind to give you a sense of it:  - shareholders might be able to issue equity but want to avoid dilution, so debt is preferred in the end despite cost. Or convertible debt under the right scenario.  - company has recurring funding needs and thinks that establishing a status on debt market is worth paying a premium to ensure they can ""tap"" it whenever hey need to.  - adding debt is a way to leverage and enhance ROI/IRR for certain types of stakeholders (think LBOs)  - etc etc etc  Takes time and a lot of experience/work to be able to figure out what's best and there isn't always a clear answer.  Source: pro buy side credit investor with experience and sizeable AuMs." P/E ratio is useful but limited as others have said. Another problem is that it doesn't show leverage. Two companies in the same industry could have the same P/E but be differently leveraged. In that case I would buy the company with more equity and less debt as it should be a less risky investment. To compare companies and take leverage/debt into account you could use the EV/EBIT ratio instead. Its slightly more complicated to calculate and isn't presented by as many data sources though. Enterprise Value (EV) can be said to represent the value of the company if someone would buy it today and then pay off all its (interest bearing) debt. EV is essentially calculated like this: (Market Capitalization plus cash & cash equivalents)  minus interest-bearing debt.  This is then divided by EBIT (Earnings before interest and tax) to get the ratio. One drawback of this ratio though is that it can't be used for financials since their balance sheet pretty much consists of debt and the Enterprise Value therefore doesn't tell us very much. Also, like the P/E ratio it is dependent on fresh numbers. A balance sheet is just a glimpse of the companys financial situation on ONE DAY, and this could (and probably will, although not drastically for bigger companies) change to the next day.