During Thursday's session, 406 companies made new 52-week lows.

Key Facts About Today's 52-Week Lows:

• The largest company by market cap to set a new 52-week low wasPfizer (NYSE:PFE).
• The smallest company by market cap to set a new 52-week low wasAscent Solar Technologies (NASDAQ:ASTI).
• Ascent Solar Technologies (NASDAQ:ASTI)'s stock fell the most, as it traded down 62.52% to reach a new 52-week low.
• Nuveen Pennsylvania (NYSE:NQP)'s stock bounced back the most, actually rising 0.0% after reaching its new 52-week low.

Stocks that set new 52-week lows on Thursday are as follows:

• Pfizer...