I spent many sleepless nights thinking about this.
1. Portfolio hedge. If in
@Sweet Bobby's case, I put on his hedge from the get go right after I wrote my puts, I would end with zero profit?
2. I hedge after my initial position generated a profit to protect that profit?
3. Assume I have case #2. I can hedge one put with some long puts. how many depends on expiration and strike. And of course the cost should be reasonable.
4. So, the hedge of a short put is some long OTM puts. This is just a spread. If the longs have a longer expiration, it is some diagonal.
5. To reduce my cost, I can adjust the strike. But the cheaper, the less protection.
6. What if I sell some puts to reduce the cost of a hedge? This is now
@Sweet Bobby's portfolio insurance.
7. It is not free or riskless. Another short put increases the risk when a black swan hits and the portfolio is now not fully protected.
8. I used BSM and some real SPY + VIX data to try recreate/backtest the hedge.
I haven't done all the combinations, just trying out some put writing, for example wrote one in Dec 2019 and in Feb, put on your long/short hedge, close everything out after the March black swan. Result: I didn't get any outsize profits.
I have a feeling
@Sweet Bobby was either lucky or he was hiding his real method. He was lucky if he made a killing in this March 2020 black swan event, by pocketed his long and just rode out his shorts. Lucky because the market recovered so quickly. He is a trading genius if he did not ride out the shorts.
I appreciate your or
@Sweet Bobby or
@destriero or
@taowave or anyone else's comments.
Thanks.