From your OP
Based on this you have mechanical model, which adjusts based on some fixed parameters.
Did today's greek's before adjustment violated your parameters? If it is a mechanical model, why are you introducing "gut feeling"?. Anticipating some price points is totally different trade.
Also If you backtested using "New Var" model, why are you giving up so early?. Probably you developed some parameters based on that model. If you switched to EIEIO model, those parameter numbers will be different
I am going to be trying a trade in 2019 that, when backtested, gives some pretty nice returns.
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From there, I will monitor the greeks, making adjustments/adding/removing various option structures to keep my greeks in line with loosely established parameters.
Adjustment and/or adding call/put verticals to fine tune the greeks are a pretty decent part of the trade to account for moves, and in backtesting over the last 5 years, there were very few large moves that couldn't be traded .
Based on this you have mechanical model, which adjusts based on some fixed parameters.
My gut feeling is RUT wants to close the gap made back on 2/13, so I anticipate more downside, and this adjustment makes me feel better.
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I should mention that as of today, I'll be using the EIOIO model until I can study a bit more about how the different models will react on a strong upmove/volatility crush. The EIOIO model called the downside much better today, so I see no reason to deviate from it until further notice.
Did today's greek's before adjustment violated your parameters? If it is a mechanical model, why are you introducing "gut feeling"?. Anticipating some price points is totally different trade.
Also If you backtested using "New Var" model, why are you giving up so early?. Probably you developed some parameters based on that model. If you switched to EIEIO model, those parameter numbers will be different