01:27 PM EDT, 09/25/2025 (MT Newswires) -- CarMax ( KMX ) shares were down more than 20% in midday trading Thursday, the biggest decliner on the S&P 500, after the company reported lower fiscal Q2 earnings and revenue.

Trading volume stood at over 19.2 million shares, compared with a daily average of about 2.9 million.

Cipher Mining ( CIFR ) said Thursday it plans to launch a private offering of $800 million of 0% convertible senior notes maturing on Oct. 1, 2031.

Shares fell more than 12% in recent trading, with trading volume at over 83.8 million versus a daily average of about 37.3 million.

Transocean ( RIG ) shares were over 13% lower recently after the company said late Wednesday it priced an upsized public offering of 125 million shares at $3.05 per share.

Trading volume was over 153.9 million against a daily average of about 28 million.

Price: 45.45, Change: -11.60, Percent Change: -20.33