“Bernanke Put” slammed holders of “put options”
Thursday, August 30th, 2007How the Friday “Bernanke Put” Slammed Holders of “Put Options” Betting on a Market Fall
Nouriel Roubini | Aug 20, 2007
Whether the surprise discount rate cut and FOMC easing bias last Friday is the first example of a moral-hazard related “Bernanke Put” is being widely discussed. But it was certainly the case that the Fed action sharply hurt those who had bought “put” options on the S&P that were expiring last Friday almost immediately after the opening bell. Given the spike in the S&P at the start of the day those put options that were in the money before the Fed Statement lost their value right after the opening bell. So quite paradoxically the “Bernanke Put” slammed holders of “put options”. Market Beat reported this by citing a report by Scott Peterson:
While the Fed’s move helped many investors last Friday, it slammed a handful who’d wagered that the market would continue to decline. It was especially painful to those who had purchased certain monthly “put” options tied to the Standard & Poor’s 500-stock index, which are contracts that pay off if the index declines below a certain level. Those options expired almost immediately after the opening bell Friday.
Holders of many of these August puts — which are often purchased as a form of insurance against a declining market — went to sleep Thursday evening expecting to cash in Friday morning. Instead, since the Fed’s announcement came before the opening bell, sending stock futures sharply higher, they were left empty-pocketed. Investors holding S&P puts that would pay off if the index opened Friday below 1450, for instance, would have made money without the Fed’s action, since the index closed at 1411 Thursday and was moving lower in overnight trading. Instead, the index shot up at the open, pushing the exercise settlement value of the contract above 1450 (1450.11, to be exact — see chart of S&P futures at right).
On Thursday, when stocks were in free-fall, S&P August puts that would have paid off if the contract opened at or below 1450 were at times changing hands for nearly $80 a piece, according to OptionMonster.com. Since roughly 110,000 of those contracts were still open at the start of trading Friday, that represents a theoretical loss of about $800 million for that single contract.
Far more investors had been purchasing S&P puts than normal due to the recent jump in volatility. Roughly $4 billion in S&P puts changed hands Thursday, about four times the daily average during the last three month, according to Hamzei Analytics, a Los Angeles derivatives trading firm. “A lot of people were hurt,” said Fari Hamzei of Hamzei Analytics. “We just zoomed to a new level, there was nothing that anyone could do.”
On the flip side, holders of S&P “calls,” which pay off in a rising market, hit the jackpot. Far fewer investors had been purchasing calls than puts, however, since the market appeared to be heading lower.
The fact that the Fed’s move came on an option-expiration day raised some eyebrows on Wall Street. Not only did the discount-rate cut hurt holders of S&P puts, it also forced them to scramble to purchase index futures in order to balance out their losses — further fueling the market’s surge. “If you ask me, if you want to get bang for your buck, I’d say [the Fed had] excellent timing,” said financial author Michael Panzner.
And today another finance blogger - Adam Warner of Daily Options Report – explains how Bernanke &Co. implictly used their Friday actions to the maximum effect by short squeezing option sellers (hat tip to Market Beat again):
The Bernanke Short Options Squeeze
So how does putting a market-moving Fed action as close to expiration as humanly possible have the maximal turbo effect? One word: Gamma.
Consider a world where there is just one option, ATM SPY calls. They have a 50 delta, so let’s say there is an open interest of 100 where each call gives you the right to buy 100 SPY’s. If they are ATM, the calls have approximately a 50 delta, so presumably the call shorts own 5000 SPY’s, while the longs are short the SPY’s.
But the delta changes as the stock moves. That’s the gamma. Let’s say the gamma is 10, so in other words if SPY lifts a point, the calls now have a 60 delta. The longs can thus sell 1000 SPY’s up a point, while the shorts have to buy 1000 up a point in order to both stay flat. The quantities are always going to offset, options are a zero sum game, so it becomes all about the urgency of the two sides.
And who has more urgency lately? Clearly the options shorts. So it stands to reason that the higher gamma gets, the more turbo in the stock.
The closer you get to expiration, the higher the gamma. And the more pressure on the side that is squeezed. In other words with a few days to go, maybe that gamma is 20. So a one point move causes the scrambling shorts to buy 2000, while the longs can sell 2000, probably at prices more their liking.
And what if it turns back down to the strike? The option shorts now have to sell back those 2000 shares to flatten out again. And so on and so forth.
And then the next day maybe they have 30 gamma near the money. Even more pressure in each direction exerted by the shorts in this environment.
Which brings us to Friday. Gamma is essentially infinity in the SPX August options. They have stopped trading. They are merely cashed out at the “opening” price (defined as whatever the calculation formula spits out taking the opening tick from each component). The rate cut and market pop comes an hour and change ahead of the open. All a call short can do to defend his position is chase futures/ETF’s up. Some OTM calls he is short now have a 100 delta between now and the open. Sure there is an offsetting long that can sell the futures/ETF’s, but who has the urgency here? Clearly the squeezed short. And thus the kindling wood lit by the Bernanke match.
Throw in a similar dynamic on all other index/ETF options that expire at the end of the day, and Big Ben literally found the perfect minute to cause the most pain to options sellers.
So now holders of put options and other participants in the options markets will have to start to worry about another surprise “Bernanke Put” Fed actions in the next few weeks. Indeed, since credit markets do not seem to have stabilized after the Friday Fed actions, investors are considering whether the Fed may be forced to cut the Fed Funds rate target before the next formal FOMC meeting on September 18th. I will not rule out such a surprise emergency Fed Funds rate cut since I expect (see my forthcoming blog) that the Fed actions last Friday will not succeed to reliquify markets seized by a severe credit and liquidity crunch.

