Samsung saw its revenues drop 4.6 percent from the third quarter, while Toshiba fell 12.3 percent. The market as a whole dropped 2.8 percent.
However, Hynix grew 5.4 percent and Micron grew 11.7 percent over the quarter. Powerchip saw the most remarkable revenue increase of 116.7 percent. This meant that while Samsung is still the dominant force in the market, overall the playing field had been levelled somewhat.
Micron and Hynix managed to perform well by avoiding any production problems in the fourth quarter, keeping output high - which iSuppli believes will allow the two to keep gaining ground throughout the year.
All firms performed well over the course of the year as NAND flash continues its rise in popularity.