Roku Inc. had the biggest decrease in short interest relative to shares outstanding among Kagan-covered new media companies between Nov. 30 and Dec. 15.

The percentage of the company's shares held short relative to shares outstanding fell 967 basis points to 32.85% as of Dec. 15.

Overstock.com Inc. posted the largest jump in short interest relative to shares outstanding among Kagan-covered new media companies between Nov. 30 and Dec. 15. The percentage of the company's shares held short relative to shares outstanding increased 375 basis points to 32.99% as of Dec. 15.

Match Group Inc. topped the list of most shorted new media companies during the period. The company saw short interest rise 53 basis points to 33.57% of shares outstanding.

Kagan is a media research group within S&P Global Market Intelligence.