Market Neutral Spread

Discussion in 'Options' started by dohdat, Dec 4, 2017.

  1. dohdat

    dohdat

    Hi there,
    I'm wondering if I sell 3 bull put spread and 3 bear put spread on 6 different companies, is this considered a market neutral strategy? Thank you.
     
  2. tommcginnis

    tommcginnis

    A long-held*, little-tested** truism is that 70% of an individual stock's movement stems from the overall market, and only 30% is attributable to that individual equity. But yesterday's enormous divergence between the NASDAQ and the DOW showed that ultimately, knowing those individual stock identities is necessary, to see whether they are correlated positively, negatively, or not-at-all.

    While your thought of 'market neutral' works on the back of the napkin, in actual use, no one can say. If you're serious about the strategy, run a 6x6 comparison, so you can best sort who to put in the bullish camp, and whom to put in the bearish. Then you'd have a basis for 'market neutral' expectation.

    * by some...
    ** by most...
    :D
     
    Last edited: Dec 5, 2017
    vanzandt likes this.
  3. vanzandt

    vanzandt

    I've never heard that. Hmph.
    Learned something new.
     
    Last edited: Dec 5, 2017
    tommcginnis likes this.
  4. sle

    sle

    While tongue in cheek, the general idea is that eventually idiosyncratic movement adds to less than the movement of the market, even if it composes a big portion of the daily variance. It's like those Russian cars - every part is moving separately but the whole thing gets to the same destination, more or less.

    I think most people either over or under-estimate the contribution of the overall market on the behavior of a particular stock. If you own a biotech or a recent IPOed start-up, it's pure idiosyncratic risk. If you own small-cap stocks, most of you risk is idiosyncratic (which, btw, makes statistical arbitrage so much easier for retail-sized players). On the other hand, if you own a stock from the top 50 in S&P 500, the amount of uncorrelated movement is going to be pretty small.
     
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  5. spindr0

    spindr0

    If the stocks correlate, the entire position would be closer to market neutral than not. If not correlated, not so much.

    For example, if your 3 bear spredas were in the O&G sector and the other 3 were financials, it's quite possible that both threesomes could make money (or both lose) as one sector rises while the other drops. OTOH, if these were all S&P stocks, it's more likely that they would correlate somewhat and one threesome would gain and the other might lose.

    And then there's individual stock news which has nothing to do with the other 5 stocks.
     
  6. dohdat

    dohdat

    yeah after the last few days. i was too bullish on tech companies. got burnt hard. maybe being market neutral would help.
     
  7. spindr0

    spindr0

    AKA: A Rising Tide Lifts All Boats.
     
    vanzandt likes this.
  8. tommcginnis

    tommcginnis

    Oh, Yeah?!?!? Well....

    "Only when the tide goes out do you discover who's been swimming naked." Warren Buffett