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Accounting Research Bulletins
Recommendations by the American Institute of Certified Public Accountants on how accountants ought to treat certain facts or items. While Accounting Research Bulletins are not authoritative in themselves, the SEC often makes them so by adopting them.
A trader who practices arbitrage. That is, an arbitrageur attempts to profit from inefficiencies in price by making transactions that offset each other. For example, one may buy a security at a low price, and, within a few seconds, re-sell it to a willing buyer at a higher price. Arbitrageurs can keep prices relatively stable as markets attempt to resist their attempts at price exploitation. They often use computer programs because their transactions can be complex and occur in rapid succession.