If there are 100000 shares on the market at 100p, and the company issues 100000 more shares:
Starting total Market capitalisation is £100,000 and we'll assume cash/debt and assets of company is zero.
Market cap reflects a popular brand name and potential to market it profitably
After rights or equity placement. If they sell 100k shares at no discount, thats another 100k and I think it all goes to the cash balance of the company
So 200k Market cap and 100k cash assets now. Twice as many shares in the same brand name potential but with cash to invest.
With twice as many shares the share price could half, that'd mean the market cap halves back down to 100k
However thats unlikely because the company now has 100k of cash so its worth a bit more then initially.
if you ask me after your pretend equity placement I would value that company at 150k market cap or a final share price of 75p.
Its an open debate, the price would vary a lot, also its unlikely people will buy into an equity placement at a premium or equal to the previous market price. They'd all lose money so usually its done at discount and on a far smaller scale then that.
Exceptions to this would be RBS , see iii for stats on their shares in issue history
A example I saw recently is VGM which is a gold mine share priced at 3p. They have doubled in price since the summer. Potential for 4m ounces of gold and market cap is 150m
They have 4bn shares now
In july they issued 400m new shares. In oct 1m more shares then another 8m more shares sold into market, over that time the share price doubled anyway
At the same time as they dilute the shares, the potential of the company and therefore the share price has been rising similarly to the markets dollar gold price
http://www.google.co.uk/finance?q=LON:vgm
The thing is they dont have to issue shares for money, they can go to the banks and borrow it. The banks can then call in that debt on the company and seize all assets wiping out the shareholders so either way is risky. See CNT news for this
http://www.google.co.uk/finance/company_news?q=LON:CNT
At least you get a running total when its new money via new shares
they are doing this for a positive reason (not because they need cash to pay debt)
thats a positive reason. who would you rather get the profits of a company, the debt holders charging maybe 7% or would you like to give the company that money via shares issued and get a 7% dividend. I think lloyds did this, ie. rights ~ 60p vs current price
If we had an accountant on this thread it might help some but anyway main thing to focus on I think is the company direction, is the ongoing business viable, theres no point trying to support a landslide but in the case of a gold mine theres a solid underlying case.
If the gold price drops, etc it could wreck their share price though, its a leveraged situation