Yesterday Morning, market fell down and offered me a fair opportunity to close all my option premium selling positions. With about 7 days to index expiration and a Gamma over -8 which was way above my estimated range around -2, I decided to take whatever market offered and close all remaining FEB positions to eliminate Gamma risk even though the Delta was in the comfortable zone.
This let my think about an optimized closing sequence for the monthly option inventory liquidation day. In the closing time of such a day, I'll need to review the intraday market trend on a 15 minute chart. If the market is trending, then I should close the damaging trades first before I close the profiting trades.
Without this procedure, the trades with potential to more profits are most likely to be closed first and the trades with potential to more losses will end up remaining alive.