Why is Microsoft stock rallying today?
Stocks managed to finish higher, with Micron doing much of the heavy lifting, rising just shy of 20% on the day. This is like silver and gold on steroids, and honestly, I am not sure there is a better way to describe the situation at this point.
Call volumes are soaring, while 7-day implied volatility is sitting around 110%. Typically, stocks in these situations begin to run into trouble once implied volatility moves into the 100%+ range, as call options become extremely expensive.
For example, a $1,000 call option on Micron expiring on May 29 is trading around $9.50, meaning the stock would need to rise above $1,009.50 for the buyer to profit if the option is held until expiration. That would require roughly another 12% gain between now and Friday, based on its closing price of $895.
Clearly, the stock just rallied 20% yesterday, but that still feels like a significant hurdle. The higher the stock rises, the higher implied volatility climbs, and the more expensive the call options become.
In many ways, what is happening here is not much different from what we saw in silver and gold starting last fall.
Dispersion within the index remains elevated on both an implied and realized basis, with the XLK outperforming the S&P 500 by roughly 18 percentage points, while every other sector continues to lag the broader index. Meanwhile, realized correlations continue to sink as market leadership becomes increasingly concentrated.
Meanwhile, 3-month implied correlation closed below 11, putting it near one of the lowest levels on record. Really, the only comparable period was around July 2024, just before Yenmageddon.
Constituent implied volatility also remains very high. This is a fairly unusual setup for the market, largely driven by the sharp rally in the semiconductor sector.
The reality is that this probably cannot continue indefinitely. Eventually, implied volatility becomes so elevated that options become too expensive, ultimately leading to an unwind in positioning. In many ways, it is not all that different from what we saw earlier this year in silver and gold. In fact, the setup does not look all that different.