In the world of finance, the Federal Open Market Committee (FOMC) meetings are closely watched for their potential impact on markets. The S&P 500, a barometer for the overall U.S. stock market, often experiences volatility around these events. But what’s noteworthy is the size of the index’s actual swings in comparison to what options traders have anticipated.

A recent analysis by Goldman Sachs highlights a fascinating trend: In the last four FOMC meetings, the realized moves of the S&P 500 were significantly larger than the moves implied by options. This indicates that traders may have underestimated the market’s sensitivity to the FOMC’s announcements.

Today, as another FOMC meeting unfolds, the options market suggests a modest expectation, with an implied move of +/-0.7% for the S&P 500. This relatively low implied volatility raises questions about whether the market might be in for another surprise.

Investors and traders often use options to hedge against their positions or to speculate on future movements. The implied move is a reflection of the consensus expectations of volatility. When actual volatility exceeds this consensus, it suggests that the market was not fully braced for the news, whether it be a change in interest rates, adjustments to monetary policy, or economic outlook statements.

The discrepancy between implied and realized moves serves as a reminder of the inherent uncertainties in the market, particularly around major economic events like FOMC meetings. As such, it pays for investors to remain vigilant and consider that market moves could outpace expectations.

As we await the outcome of today’s meeting, the question lingers: Will the S&P 500 follow the recent pattern and outperform the modest expectations set by options traders, or will the market finally align with the anticipated moves? Only time will tell, but the precedence of underestimation could be a signal to prepare for potentially larger ripples through the stock market.