6730 - 6740 becomes the new hard cap for SPX; 6685 -6670 becomes the new support, quick moves (down or up) in-between

Oct 20: SPX cap 0DTE at 6670-6690; tendency likely to test support from 6650 down to 6635

Oct. 19 : ESZ25 futures meet firm resistance at 6670 - 6690 (SPX pre-market positioning equivalent); 6650 - 6635 provides less structural support

Oct 17 OpEx Update No. 2 -- below 6600, the VOID extends all the way to 6545

Oct. 17 OpEx -- Critical Live Assessment: Not Safe to Buy Yet . . . . Update No. 1

Oct. 17 OpEx : The Fortress -- 6650 Customer's Call Short Wall Meets MM's Expiry Buyback

Oct 17 Opex: PAM lightens up scalper long positions until SPX clears 6650 after NY open

Take out the thin 7.33 Gamma at 6625, and we may see an SPX collapse all the way to 6600, 0DTE

Its a wide spread (6700 - 6735) -- but this is the solid-rock cap zone today

Hard cap at 6700 - 6715 in early NY trade; its a low-volume day, but be aware -- it's the day before Oct 17 OpEx

Once SPX falls below 6645, (not-too-large 8.14 (+) Gamma), it's clear falling down to 6600

Hard Cap (impregnable) from 6730 to 6750; void zone now starting at 6700, Update No. 1