The dominant factors affecting control valuations are earning power (past and prospective) and asset values.
Warren BuffettThe range of derivatives contracts is limited only by the imagination of man (or sometimes, so it seems, madmen). Say you want to write a contract speculating on the number of twins to be born in Nebraska in 2020. No problem-at a price, you will easily find an obliging counterparty.
Warren BuffettWhen Berkshire buys common stock, we approach the transaction as if we were buying into a private business.
Warren Buffett