*Scanning all single-stocks subject to 2500 contracts minimum call or put volume

Some less actively traded names seeing bullish order flow: Wonder Auto Tech (WATG), Cheesecake Factory (CAKE), China Surveillance (CSR) Bearish order flow: Healthnet (HNT), Air Corp. (AAR), iShares Germany (EWG). Post Earnings: Aetna (AET) Pre-Earnings: CVS Ex-Div: American Electric Power (AEP), Exxon Mobile (XOM), Olin (OLN)

Some less actively traded names seeing bullish order flow: Supergen (SUPG), Fortress Investment Group (FIG), Enterprise Product Partners (EDP). Bearish order flow: Constellation Brands (STZ), AAR Corp. (AIR). Post Earnings Activity: Wal-green’s (WAG), Conagra (CAG), Pre-Earnings Activity: Micron Technology (MU). Ex-Div Activity: Excel Energy (XEL), Safeway (SWY), iShares Australia (EWA), iShares Mexico (EWW), iShares Japan (EWJ), iShares EAFE (EFA), iShares Emerging Markets (EEM), iShares Brazil Fund (EWZ).

Some less actively traded names seeing bullish order flow: Affymetrix (AFFX), Finistar (FNSR), Harman (HAR). Bearish order flow: AAR (AIR), William’s Companies (WMB), Red Hat (RHT). Post Earnings Activity: SAIC (SAI), Men’s Wearhouse (MW), Jackson Hewitt (JTX). Pre-Earnings Activity: Lululemon Athletica (LULU), Costco (COST), Dollar General (DG). Ex-Div Activity: Disney (DIS), Burlington Northern (BNI), Eastman Chemical (EMN), Becton Dickinson (BDX).

Dendreon (DNDN) finished the day down $9.74 to $11.81. The stock was halted midday as data were released at an AUA meeting today. The NASDAQ was also investigating two minutes of trading in DNDN that might have included some brokerage errors between 1:25 and $1:27–Bloomberg. However, no errors were found. Was the midday sell-off warranted?

Update. Shares surge 123 Percent in After Hours. Link to story.

After hitting new lows of $1.58 per share, GM is back to unchanged at $1.94. The automaker reported a 45 percent decline in March auto sales, which was not as bad as the 48 percent drop analysts expected. In the call, GM says SAAR forecsts suggest sales may bottoming. Options remain active and some bullish activity is being seen in recent trade. 22.7K June 3 calls trade and includes 5000 for 25 cents on the ISE, where ISEE Sentiment data indicates an opening customer buy order. Jan-10 2.5 calls are also active and the day’s 26.5K contracts includes 5000 Jan 2.5/5 call spreads for 20 cents earlier today and 10000 Jan-10 2.5 straddles, apparently sold for $2.35.