To those of you unaware derivatives can be construed in some quarters as financial weapons of destruction. The reason is the value of the asset is linked to an UNDERLYING asset class as defined here. (an arrangement or instrument (such as a future, option, or warrant) whose value derives from and is dependent on the value of an underlying asset.) This could be a recipe for disaster as no one really knows what that elusive underlying value asset is meaning if it is a snakebit low interest bond or commercial real estate plummeting value REIT . Banks are allowed a nefarious way to book certain losses on their balance sheets by permission . They do this by defraying the posting for a year or more in a special accounting column that moves the loss out of the immediate public disclosures and gives the bank time to minimize the hit.This cannot be considered a minor adjustment when the sum total of derivative exposure potentially far exceeds underlying asset values. Freezing stock price adjustments ominous signal.