Buzz Stocks: Boeing Co, Biogen Inc, and Twitter Inc

U.S. stocks are sinking as Apple Inc (NASDAQ:AAPL) shares fall after earnings. Among equities in focus today are aerospace company and fellow blue chip Boeing Co (NYSE:BA), biotech Biogen Inc (NASDAQ:BIIB), and social media stock Twitter Inc (NYSE:TWTR). Here's a quick look at what's driving BA, BIIB, and TWTR.

• BA is down 1.2% at $137.37, in spite of delivering an earnings beat and upwardly revising its full-year revenue and delivery guidance. BA is down 5.1% in 2016, with the shares struggling to break out above the $137-$139 region. Prior to today, Boeing Co (NYSE:BA) shares sported a 14-day Relative Strength Index (RSI) of 70 -- in "overbought" territory, suggesting today's breather might have been in the cards. There are a few option bulls hoping for BA to reverse higher still, with BA's 10-day call/put volume ratio at the International Securities Exchange (ISE), Chicago Board Options Exchange (CBOE), and NASDAQ OMX PHLX (PHLX) sitting at 1.72, in the 94th percentile of its annual range.
  
  
• BIIB is up 2.5% at $293, after also delivering an earnings beat, as BIIB profits soared thanks to sales of its multiple sclerosis drug, Tecfidera. The stock has been slowly sinking since notching an annual high of $333.65 in early August, though the shares seem to have found support from their 320-day moving average. Some option traders are likely kicking rocks after BIIB's earnings win, though, with Biogen Inc's (NASDAQ:BIIB) Schaeffer's put/call open interest ratio (SOIR) of 1.06 sitting higher than 92% of all other readings taken in the past year, suggesting near-term option players are more put-biased than usual.

• A day ahead of its own earnings release, TWTR is trading 1.9% higher at $17.59, as yet another round of buyout rumors swirl, this time with reports that Walt Disney Co (NYSE:DIS) may still be mulling a bid for the micro-blogging site. Although TWTR is down over 43% year-over-year, it seems as though the shares may have found a foothold atop their 10-month moving average, currently in the $17.50 neighborhood. Twitter Inc (NYSE:TWTR)  option buyers have been more bearish than usual over the past several weeks, with the stock's 10-day put/call volume ratio at the ISE/CBOE/PHLX of 0.40 sitting higher than 77% of all other readings from the past year.

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