24/7 Wall St. Closing Bell — October 5, 2012: Markets Slide after Early Gains (HPQ, HD, COG, FDO, BRCD, STZ, AA, YUM, COST, SWY, ZNGA, FSLR, CTIC, GRPN)

Zynga Inc. (NASDAQ: ZNGA) is down 13.3% at $2.45 after posting a new 52-week low of $2.21 earlier today. The social gaming company lowered its quarterly forecast last night and the stock was pummeled today. More coverage here.

First Solar Inc. (NASDAQ: FSLR) is down 10.6% at $20.16. The solar panel maker got a downgrade today due to a potentially long-term warranty problem. More coverage here.

Cell Therapeutics Inc. (NASDAQ: CTIC) is down 25.5% at $1.51 after posting a new 52-week low of $1.42 earlier today. The biopharma company announced a secondary stock offering today. More coverage here.

Groupon Inc. (NASDAQ: GRPN) is up 9.2% at $5.24. The daily deals company had no news, but then the good news is that Groupon is not Zynga. More coverage here.

Monday is a federal holiday. U.S. banks and bond markets are closed, but equity markets will be open. No data releases are scheduled for Monday.

Have a great weekend!

Paul Ausick

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