PSX Options Key Levels — 2026-10-16 Expiration
As of 2026-10-01 02:33 ET, Phillips 66 (PSX) max pain for the 2026-10-16 expiration is $230 with the stock at $256.35; the gamma flip is $250.85; dealers are in positive gamma (net GEX 825.4K); options imply a ±6.92% move by expiration.
| Spot price | $256.35 |
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| Max pain | $230 |
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| Gamma flip | $250.85 |
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| Call Wall | $270 (731 open interest) |
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| Put Wall | $220 (2,309 open interest) |
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| Net gamma exposure (GEX) | 825.4K — positive gamma |
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| Implied move | ±6.92% (±$17.75) |
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| At-the-money implied volatility | 41.4% |
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| Put/call open interest ratio | 1.36 |
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| Call / put open interest | 7,422 / 10,081 |
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| Call / put volume | 420 / 76 |
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What is PSX max pain today?
$230 for the 2026-10-16 expiration, 10.3% below the current price of $256.35.
What is PSX gamma exposure (GEX)?
Net GEX is 825.4K (positive gamma), with the gamma flip at $250.85.
Where are the PSX call wall and put wall?
Call wall $270 (resistance), put wall $220 (support).
PSX Dealer Positioning Insights
- Positive Gamma Environment — Dealers are long gamma — they buy dips and sell rips, dampening moves. Expect mean-reversion and range-bound trading.
- High Put/Call OI Ratio (1.36) — Put open interest dominates, indicating hedging/bearish positioning. Extreme readings can be contrarian bullish.
- Max Pain @ $230.0 — Spot is 10.3% above Max Pain. Gravitational pull may increase as expiry approaches.
- Support $220.0 / Resistance $270.0 — Put Wall at $220.0 acts as support. Call Wall at $270.0 acts as resistance. Net gamma concentration creates dealer hedging flows at these levels.
- Expected Move (Straddle-mid): ±6.92% ($17.75) — ATM straddle-mid implies a ±6.92% move by expiry. Range: $238.60 — $274.10
Largest PSX Open Interest Strikes
Calls: $280 (800), $350 (792), $270 (731), $285 (639), $260 (629). Puts: $200 (4,238), $220 (2,309), $250 (504), $260 (468), $175 (391).
Later PSX expirations: 2026-10-23, 2026-10-30, 2026-11-06, 2026-11-20, 2026-12-18, 2027-01-15, 2027-02-19, 2027-03-19.
Max pain is the strike at which option holders lose the most at expiration. Gamma exposure (GEX) estimates how much options dealers must hedge as the stock moves: positive gamma tends to dampen moves, negative gamma amplifies them, and the gamma flip is the price where net GEX changes sign. Call and put walls are the strikes where call and put gamma exposure is most concentrated, often read as resistance and support. Methodology
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