XLU Iron Butterfly — 2026-10-23

XLU (State Street Utilities Select Sector SPDR ETF): $166K of buyer-initiated unusual call flow (100% call-dominant), IV rank 73 (elevated). Our gamma model reads XLU in a POSITIVE-gamma regime (net GEX 25.6M, flip 39.74) — dealers are long gamma and suppress realized vol, so price tends to pin/mean-revert between the $39.5 put wall (support) and $41 call wall (resistance). Structured as a Iron Butterfly (sell $41P / buy $40.5P / sell $41C / buy $41.5C) expiring 2026-10-23 (17 DTE) — positive-gamma pin at wall + rich IV → iron fly at the pin. Net credit $42, max loss $8 (defined risk). Breakevens $40.58 and $41.43.

Underlying: XLU @ ~$40.97 | 2026-10-23 (17 DTE) | Net credit (entry): ~$42 per condor/fly. Use limit orders at the mid or slightly better.

ENTRY: Sell the $41 put AND $41 call (the body) and buy the $40.5 put / $41.5 call wings, expiring 2026-10-23 (17 DTE), as one order at a LIMIT of the mid or better — target credit $42. IV rank 73 is elevated — premium is rich, a good backdrop to SELL; any vol contraction adds to the win. Best when spot is PINNED at $41 in a positive-gamma regime. Gamma pin is strong (pin strength 0.68) — anchor the $41 body at the pin so spot is magnetized to your max-profit point. | TAKE PROFIT: Buy the fly back to LOCK IN gains at ~25–40% of the $42 max credit — a fly's max profit needs a pin-perfect expiration, so don't be greedy; take the middle of the tent. Also close on TIME: exit around 21 DTE regardless of P&L to sidestep the late-cycle gamma/pin risk near XLU's short strike(s) — currently 17 DTE, so plan the exit 0 day(s) out. Profit zone $40.58–$41.43, peak at $41. | IF TESTED: As spot drifts off the $41 body, roll the UNTESTED side toward price to re-center the fly and collect more credit; if a short is tested (delta ~0.30) or loss ≈$84, roll the whole fly in the direction of the move for a credit or take the defined stop. Treat a close below the $39.5 put wall as the hard trigger to act (the pin support has failed); Treat a close above the $41 call wall as the hard trigger to act (the resistance magnet has broken). A wing fully in-the-money = max loss ($8); take it. | MAXIMIZE: If XLU sits right at $41, let theta rip toward the pin — this is where the fly pays most. Bank it around 25–40% rather than chasing the last of the tent; re-center into the next cycle if the pin holds.