The Trouble with Asset Bubbles: If You Stop Pumping, They Pop
The idea that authorities can massage their pumping to keep asset bubbles inflated at a permanently high plateau is currently being tested.
The trouble with inflating asset bubbles is that you have to keep inflating them or they pop. Unfortunately for the bubble-blowing central banks, asset bubbles are a double-bind: you cannot inflate assets forever. At some unpredictable point, the risk and moral hazard that are part and parcel of all asset bubbles trigger an avalanche of selling that pops the bubble.
This is another facet of The Fed’s Double-Bind: if you stop pumping asset bubbles, they pop as participants realize the music has stopped, and if you keep pumping them, they expand to super-nova criticality and implode.
There are several dynamics at play in this double-bind.
1. The process of inflating a bubble (for example, the current bubbles in stocks and real estate) requires pushing investors and speculators alike into risky asset classes. This puts the market at increasing risk as everyone is pushed to one side of the boat.
2. Those on the other side of the boat (i.e. shorts) are slowly but surely eradicated as the pumping keeps inflating the bubble. When the bubble finally bursts, there are no shorts left to cover, i.e. buy stocks at lower prices to reap their profits.
3. As the bubble continues to expand, the money available to enter the market and keep prices rising declines. The very success of the pumping process strips the markets of new sources of new money, leading to a point where normal selling exceeds new-money buying and the bubble collapses.
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