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So... when you say ' My system scans for positive expectancy spreads ' you are not using the term 'expectancy' in it's statistical sense http://en.wikipedia.org/wiki/Expected_value which requires knowledge of distribution and probabilities. Nor are you using 'probability' in its...

SO.... You are assuming a log normal distribution, computing the standard deviation and then what?? Your spreads have a Z shaped continuous P/L graph. How do you get expectation out of it so you can find those with positive expectations?? http://en.wikipedia.org/wiki/Expected_value...

' My system scans for positive expectancy spreads ' How are you computing expectancy??

MCD: http://finance.yahoo.com/blogs/the-exchange/mcdonald-economic-woes-keeping-sales-check-195612736.html http://finance.yahoo.com/q/bc?s=MCD&t=2y&l=off&z=l&q=l&c= Trade: Sept 110/115 bear call spread for a net credit of $27 Yield = 27/473 = 5.7% in 153 days or 13.6% annualized...

Was seeing if anyone recommended any books on Options Market Making for someone who has decent knowledge of option theory, but no actual trading experience. I recently joined the industry out of college so I have an ok understanding of options but haven't started trading. <iframe...

COST: http://finance.yahoo.com/news/costco-sales-rise-amid-challenges-142001396.html http://www.fool.com/investing/general/2013/04/14/3-reasons-costco-stock-deserves-the-premium.aspx http://finance.yahoo.com/q/ks?s=COST+Key+Statistics http://finance.yahoo.com/q/co?s=COST+Competitors...

CLB: http://finance.yahoo.com/news/ahead-bell-core-labs-rallies-131203166.html http://finance.yahoo.com/news/core-lab-posts-stellar-1q-180501595.html http://finance.yahoo.com/q/ks?s=CLB+Key+Statistics http://investing.money.msn.com/investments/financial-statements?symbol=clb...

EXAS: I sold 1 (one) April $7 put for $45. I'll take 100 shares at $7. If there's a problem they can probably fix it... and if they can't somebody else (e.g. BMS) can buy them and maybe THEY can fix it. Either way it will be a long time before the whole story is told. BTW: Implied...

http://www.cnn.com/2013/04/17/politics/senate-guns-vote/index.html I think this is shameful. While I don't consider myself a died-in-the-wool 'gun nut' I own several guns and have a concealed carry permit. I have no problem with being checked out whenever I buy a gun and would have no...

Commodities: http://finance.yahoo.com/news/brutal-trading-continues-gold-mining-031551570.html http://www.forbes.com/sites/panosmourdoukoutas/2013/04/15/does-the-crash-in-precious-metals-signal-the-beginning-of-another-financial-crisis/?partner=yahootix Just when I switched to...

There's been a big explosion in Boston at the finish line to the Boston Marathon. Everybody is being deployed in New York City including police reserves. They are all armed to the teeth. Something is up.

'You're the guy that said he sold an ENTIRE Oct. $10 Put for $270.' Works for me. :-)

The market seems intent on pulling back here: http://stockcharts.com/h-sc/ui?s=spy Methinks the hope was drunk Wherein it dressed itself and it hath slept since And wakes it now, to look so green and pale At what it did so freely.

"grandiose unsubstantiated claims" That seems like a grandiose and unsubstantiated accusation. I haven't seen any claims at all actually. As for the earnings call.... I never listen to those. It takes too long to find out too little. I wait for the analysts to sift through and tell me what...

"What I can't read is if there is something wrong that the data isn't out yet" That's usually taken as a negative on the assumption that the company is trying to put a positive slant on negative data. But not always. I remember one company that had a report on a Phase 3 trial delayed a...

CYS: http://blogs.barrons.com/incomeinvesting/2013/04/11/barclays-only-a-few-mreits-seen-as-compelling-investments/?mod=yahoobarrons http://seekingalpha.com/article/1328751-cys-investments-15-20-upside-11-yield-low-capital-loss-risk?source=yahoo...

BRCM: http://www.cnbc.com/id/100632389 http://www.cnbc.com/id/100634745?__source=yahoo|headline|quote|text|&par=yahoo http://finance.yahoo.com/news/qualcomm-reverts-neutral-203002215.html...

You bought the shares outright??? WOW... that's against my religion. I sold an Oct $10 put for $270. :-)

TLT: http://finance.yahoo.com/news/long-term-treasury-bond-etf-233410597.html http://finance.yahoo.com/q/bc?s=TLT&t=5y&l=on&z=l&q=l&c= "Now, with a disappointing March U.S. jobs report, weakening global sentiments and Eurozone financial strains, investors are again returning to the...

Why is ESI trading so low?? Here's some clues: http://finance.yahoo.com/news/weak-enrollments-hurt-itts-4q-140848024.html http://www.fool.com/investing/general/2013/01/29/itt-educational-services-puts-on-the-dunce-cap.aspx...