Short bets against S&P 500 technology stocks decline in October Nov. 14, 2025

Short sellers reduced their bets against the information technology sector in October. The sector that holds the highest weightage on the S&P had an average short interest of 1.70% in October, down from 1.76% in September.

The S&P 500’s information technology sector $XLK has grown more than 25% so far this year, compared to an over 16% rise in the broader benchmark index.

Super Micro Computer $SMCI was the most shorted stock in the sector in October, while Microsoft $MSFT took the spot as the least shorted stock.

Stocks with the largest and least short positions
Ranked by short interest as a percentage of shares float

Super Micro Computer (SMCI), Western Digital $WDC, and ON Semiconductor $ON were the top three most shorted stocks in October. Short interest in SMCI came down to 14.98% in October from 18.14% at the end of September.

While Western Digital (WDC) and ON Semiconductor (ON) had short interests of 9.43% and 9.13%, respectively.

Microsoft (MSFT) was the least shorted stock in the sector last month, with a short interest of 0.72%, preceded by Apple $AAPL and Amphenol $APH, with short interests of 0.78% each.

Industry Analysis

Average short interest as a percentage of floating shares

IT Services was the most shorted industry within the information technology sector, with 3.43% short interest in October, up from 3.22% in September.

Technology Hardware, Storage, and Peripherals was the second most shorted industry, with 2.00% short interest as of October 31st.

Communications Equipment was the least shorted industry in the sector this month, with a short interest of 1.25%.