Learn synthetics. It's easy stuff and it is practical. The call fly NBBO was 30 cents wide while the pfly was filled two cents off mid.
The mishmash of put options and owning stock with regards to the stock at hand is the same as owning a call option. This makes zero sense to me how stock plus a long put = a call but it checks out...this is the pnl of my stock position and a 16 put.
Parity relates to an arbitrage which involves long shares and short synthetic shares. Ignore the forward for a second. If shares are at 102 with a 100 call at 3 then the 100 put is trading 1. If someone is offering the put at 0.8, you buy the put, sell the call at 3 and buy the shares at 102. You are netting 0.2 on the conversion. Parity is enforced via the arbitrage. in this case it is long shares and short synthetic shares (short call, long put short synthetic). The shit isn't going to quote at parity but to effect the conversion is another matter entirely. You're not in this to trade conversions.
You can get the implied borrow on HTB shares by pricing the synthetic at duration. You can price the RFR (absent divs) by pricing the index forward. You can gain exposure to rates via that forward. The utility is endless.
My buddy had a lake house in New Buffalo MI and Ken G was the next door neighbor. They had accelerated cliff erosion due to the storms (climate catastrophe) and it took me about 10 minutes to calc that the hypotenuse (house elevation to shore) was going to terminate in their living room. House sold for top dollar before the entire neighborhood had to form a fund two years later to address the erosion with millions spent on revetments. Knowledge of synthetics can help with timing. Upside skewed tech stocks and the smile trades flat... often a sign of lack of inst-demand, etc.
$0.09 $0.31 $0.40 $0.13 $0.000 $0.005 $0.026 $0.017 If my pnl chart is correct, you opened the position for a .13 credit AND you closed it for a .017 credit? lol So your net was about .147?
Eureka! If the price goes up then the long stock is acting like a call option....and if the price goes down the long put stops the losses at the cost of the put...ie the same as the call option would stop losses at the cost of the call! But this isn't an equitable relationship right? Both options have extrinsic value, so will gain more and lose less relative to the stock position? I think this is how MM hedge...they buy calls to attain 0 delta on a short stock position, so if price drops the long calls, due to their extrinsic value, will lose less than the short position gains...so they make $ on the difference when they re-center to 0 delta.
What are the chances of the short wing of the butterfly getting exercised early if itm on the expiry date? Example the AUG23 MARA 18/17.50/17 PUT Price right now is $17.25