Pacific Office Properties Trust. (AMEX: PCE) shares ballooned 75.5 percent to $3.58 early Thursday afternoon. Volume was 674,108, or more than 33 times its full-day volume average, after saying it will no longer attempt an initial public offering on the New York Stock Exchange.

North American Palladium Inc. (AMEX: PAL) traded in 5,700,732 shares Thursday, nearly doubling its daily average of 3,334,090. Prices for were up 2.6 percent to $7.38. Toronto-based PAL is a precious metals company focused on growing its production of palladium and gold in mining-friendly jurisdictions.

Cubic Energy Inc. (AMEX: QBC) fell 6.9 percent Thursday to $1.08. Volume for the stock was 192,919 shares besting its full-day average of 141,700. QBC is an independent company engaged in the development and production of, and exploration for, crude oil and natural gas.