Dynamics Between Next Week’s FOMC Decision, Elevated Short Interest, And Options Expiry

posted in: Derivatives, Equities | 0

Next week, the FOMC meets.

The two-day meeting, the year’s last and a highly anticipated one, ends Wednesday.  A rate hike is widely expected.  The fed funds rate has been stuck near zero for the past nine years.

Markets currently expect either a ‘one and done’ or a very shallow tightening cycle.  Depending on whether or not the Fed obliges can have huge implications for stocks.

With stocks under slight pressure in recent sessions and amidst favorable seasonality, a dovish message – perceived or real – can potentially act as a tailwind.

The S&P 500 index (2047.62) has dropped 2.6 percent in the past six sessions and is north of four percent away from its all-time high in May this year.

In this scenario, short interest can help – equity bulls, that is.Chart 1

In the most recent period (end of November), NYSE short interest rose 1.4 percent to 17.5 billion shares.  Since the end of September, it has dropped five percent.  The 18.4-billion high reached two months ago was the second highest ever, after 18.6 billion at the end of July 2006 (arrow in Chart 1).

Assuming the bulls have the means to force a squeeze, the elevated level of short interest is a powerful tool they have at their disposal.

Over on the Nasdaq, it is the same phenomenon.  Short interest was essentially unchanged in the latest period.  Off the end-September high of 9.5 billion shares – the highest since 10.1 billion shares in the middle of September 2008 – short interest is down 6.1 percent (Chart 2).  Once again, in the right circumstances, this is a recipe for squeeze.Chart 2

This is one side of the coin, and favors the bulls, the other side not so much.

In a scenario in which the Fed does not quite sound as dovish as markets are currently priced for, shorts can lick their lips.  They have doggedly remained bearish and will be rewarded if the Fed does not signal a ‘dovish hike’.

Two days after the FOMC decision next week, December options expire.  Here is how open interest in SPY ($205.34), the SPDR S&P 500 ETF, looks in the 204-206 strikes: calls, 159,000 contracts; puts, 320,000 contracts.

There is room for a surprise reaction (by stocks) next week which will be on the downside, not up.

Thanks for reading!