Thanks Sig.Not to torture the analogy too much, I'd say most professional racecar drivers do indeed know the engineering behind how their cars work. As a former professional pilot, I know for sure that every pilot knows exactly how every part of the airplane they fly works. Something to consider, there's a counterparty to every option trade you make. That counterparty most probably fully understands options at the fundamental level. What's your edge on them? As the old saying goes, if you don't see the sucker when you look around the poker table....you're the sucker! Just to emphasize, you are asking great questions and clearly very intellectually curious so just trying to encourage you to take the deep dive into the hard stuff, not discourage you.
To clarify, I have read McMillan, Sinclair, Bulkowski, etc... I have invested in my trading book library and am happy to buy more books. I had a Q regarding Hull because there are currently 10 editions of it and would prefer to buy a version that has thicker paper stock, rather than the rice paper one. Hopefully, that is the 10th edition.
My observations thus far are that:
1) FI's like IB do not release their formulas on how they derive their greeks. It is their proprietary formula (so they've told me). Hence, i've seen different values by different platforms for the same greek (same option, underlying, etc...)
- if that is the case, it is difficult make a decision based on 'x' when 'x' is different from platform to platform. i.e. if my buying or selling decision is based on X, one platform might give me the buy signal, and the other would be to hold or sell.
- for me, and this is the biggest realisation in writing this post. It's the lack of consistency and concreteness in the greeks that led me to being disillusioned about it all. If the #s are unreliable/inconsistent anyway... why bother mastering it? why not invest my time and energy in mastering something that has more reliable results?
2) IV is the biggest determinant in price and IV cannot be properly quantified. Rather, it's understanding how IV influences the greeks that i've found to be most helpful in my trading.
3) the MM do not necessarily price their options based on the greeks. It's a major influencer, but not the sole influencer. Rather, it's supply-demand, and balancing their books. they use the greeks as a guideline to price things competitively. But if they take a position over there, they will take the offsetting position here because it makes financial sense to them.
there are more observations, but those are the 3 that jump to me. As a trader, my results are based on using my top talents and getting help in the areas that I am weaker in. Currently, I am a directional trader and am happy with my journey thus far. Spreads and non-directional strategies... that's what I'm interested in learning more about. More out of interest and the possibility off adding it as an additional tool.