Within the utilities sector , short sellers remain heavily concentrated in electric utilities, with several electricity producers and multi-utility companies ranking among the most heavily shorted stocks in the market at the end of September.

The utilities sector comprises companies involved in providing services such as electricity, natural gas, and water, among others.

Oklo recorded the highest short interest among utilities stocks with a market capitalization of more than $2B, with short interest representing 18.09% of shares outstanding. The company’s shares have slipped more than 48% year to date, underperforming the benchmark S&P 500, which has gained more than 12% over the same period.

Oklo was followed by Black Hills at 14.20%, reflecting elevated bearish positioning in both stocks.

At the other end of the spectrum, ReNew Energy Global and Sempra were among the least shorted utilities stocks, with short interest of 1.09% and 1.68%, respectively.

The five most shorted utilities stocks with market capitalizations of more than $2 billion (as a percentage of shares outstanding):

Oklo – 18.09% short interest

Black Hills – 14.20%

H2O America – 12.32%

Otter Tail – 11.41%

Ormat Technologies – 9.85%

The five least shorted utilities stocks with market capitalizations of more than $2 billion (as a percentage of shares outstanding):

Eversource Energy – 2.41% short interest

Public Service Enterprise Group – 2.16%

PG&E – 1.77%

Sempra – 1.68%

ReNew Energy Global – 1.09%