IMAX Co. (NYSE:IMAX – Get Rating) was the recipient of a significant increase in short interest in December. As of December 15th, there was short interest totalling 4,030,000 shares, an increase of 15.5% from the November 30th total of 3,490,000 shares. Currently, 8.8% of the shares of the stock are short sold. Based on an average daily volume of 812,000 shares, the short-interest ratio is presently 5.0 days.

Lincoln National Co. (NYSE:LNC – Get Rating) was the recipient of a large growth in short interest in the month of December. As of December 15th, there was short interest totalling 5,120,000 shares, a growth of 42.6% from the November 30th total of 3,590,000 shares. Based on an average daily volume of 2,680,000 shares, the short-interest ratio is presently 1.9 days. Currently, 3.4% of the shares of the company are short sold.

Hawaiian Holdings, Inc. (NASDAQ:HA – Get Rating) was the recipient of a significant increase in short interest in December. As of December 15th, there was short interest totalling 3,630,000 shares, an increase of 16.0% from the November 30th total of 3,130,000 shares. Based on an average daily trading volume, of 865,000 shares, the days-to-cover ratio is presently 4.2 days. Approximately 7.3% of the company’s shares are short sold.

Mercury Systems, Inc. (NASDAQ:MRCY – Get Rating) was the recipient of a large increase in short interest in the month of December. As of December 15th, there was short interest totalling 2,520,000 shares, an increase of 15.6% from the November 30th total of 2,180,000 shares. Based on an average trading volume of 360,300 shares, the days-to-cover ratio is currently 7.0 days.

IAMGOLD Co. (NYSE:IAG – Get Rating) (TSE:IMG) saw a large decline in short interest during the month of December. As of December 15th, there was short interest totalling 7,450,000 shares, a decline of 64.9% from the November 30th total of 21,250,000 shares. Based on an average trading volume of 6,200,000 shares, the short-interest ratio is currently 1.2 days. Approximately 1.7% of the company’s shares are sold short.

CION Investment Co. (NYSE:CION – Get Rating) saw a large increase in short interest in December. As of December 15th, there was short interest totalling 52,600 shares, an increase of 107.9% from the November 30th total of 25,300 shares. Based on an average trading volume of 291,800 shares, the days-to-cover ratio is presently 0.2 days.

Thoughtworks Holding, Inc. (NASDAQ:TWKS – Get Rating) was the recipient of a significant increase in short interest in December. As of December 15th, there was short interest totalling 1,380,000 shares, an increase of 47.8% from the November 30th total of 933,800 shares. Currently, 1.6% of the shares of the stock are sold short. Based on an average daily volume of 858,000 shares, the short-interest ratio is presently 1.6 days.

OP Bancorp (NASDAQ:OPBK – Get Rating) saw a large increase in short interest in the month of December. As of December 15th, there was short interest totalling 39,900 shares, an increase of 86.4% from the November 30th total of 21,400 shares. Approximately 0.4% of the shares of the company are short sold. Based on an average daily volume of 27,400 shares, the days-to-cover ratio is presently 1.5 days.

Citigroup (NYSE:C – Get Rating) had its price objective decreased by investment analysts at Oppenheimer from $90.00 to $87.00 in a note issued to investors on Wednesday, Benzinga reports. The brokerage presently has an “outperform” rating on the stock. Oppenheimer’s price objective indicates a potential upside of 95.99% from the company’s current price.

Amazon.com, Inc. (NASDAQ:AMZN) was the target of some unusual options trading activity on Wednesday. Investors purchased 1,794,328 put options on the stock. This is an increase of approximately 74% compared to the average volume of 1,029,433 put options.