SPY put/call imparity - arbitrage or what?

Discussion in 'Options' started by rocky_raccoon, Jan 31, 2013.

  1. So, what exactly may happen? Early exercise of the short call/put?
    How early?

    BTW, SPX options do not have this disparity.
     
    #11     Jan 31, 2013
  2. hft_boy

    hft_boy

    http://bit.ly/14tDPDD
     
    #12     Jan 31, 2013
  3. In your example you'd short the 146put/long the 146 call and short stock and your risk graph would show a profit of $20 at expiry. On the 15th, you'd pay the dividend on short stock thus negating the advantage, and you'd have to exercise your long call to capture the dividend or else you'd be out that amount. HTH.
     
    #13     Jan 31, 2013
  4. Ok, I guess I am not the first one who came up with this cute idea.
    Thank you, everyone. Case closed.
     
    #14     Jan 31, 2013
  5. calif

    calif

    What if the instrument being traded (SPY or other individual stock) was expiring at a particular time/date and there happened to be neither an upcoming ex-div or an 'earnings call' event before the expiration?

    - How would this affect the overall 'risk' of the short box-spread?



    --


    On the same note:

    - If one of the legs (out of 4 total) was exercised, how does the broker handle it? Does the broker-platform simply neutralize all 4-legs and you lose the difference between the premium you received at the beginning and cost to close each leg?



    -Thanks
     
    #15     May 25, 2013