11.   Analysts pointed to several factors driving stock prices.

12.   Analysts expressed concern Thursday that chip prices could be driven back down again if Hynix and other manufacturers overreact by ramping up production too quickly.

13.   And that only pushes more investors into the already hot stocks, driving their prices ever higher.

14.   And in countries like Ghana and Senegal, a small but fast-growing Web culture is sprouting as competition drives the price of Internet access steadily downward.

15.   And it is at least plausible that bullish expectations for the knowledge industries are driving stock prices higher.

16.   And prices are driven by the basic rules of supply and demand.

17.   Another round of mergers and acquisitions helped to drive share prices higher.

18.   Any experienced investor will tell you that earnings drive stock prices, so you have to be confident that an idea will pan out.

19.   Arctic weather across continental Europe has claimed dozens of lives and driven the price of refined heating fuel higher.

20.   As a result the domestic Dutch market was flooded with waste paper, driving prices down.