Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 185 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)OSIS open contracts per strike for Fri, Jan 15.
Open-interest change: building vs unwinding
Needs two observed snapshot days for this expiration; the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Jan 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 15
— call IV— put IVATM ≈ 42.6% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 15
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Jan 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.92
-0.04
150
0.0034
0.15
-0.04
-0.09
0.87
-0.05
160
0.0049
0.20
-0.06
-0.13
0.81
-0.07
170
0.0065
0.26
-0.07
-0.19
0.77
-0.07
175
0.0074
0.29
-0.07
-0.23
0.73
-0.08
180
0.0082
0.31
-0.08
-0.27
0.69
-0.08
185
0.0089
0.34
-0.09
-0.32
0.64
-0.09
190
0.0095
0.36
-0.09
-0.37
0.59
-0.09
195
0.0099
0.37
-0.09
-0.42
0.54
-0.09
200
0.0102
0.38
-0.10
-0.47
0.44
-0.09
210
0.0102
0.38
-0.10
-0.57
0.35
-0.09
220
0.0096
0.35
-0.09
-0.67
0.27
-0.08
230
0.0085
0.32
-0.08
-0.75
0.21
-0.07
240
0.0073
0.27
-0.07
-0.82
0.16
-0.06
250
0.0060
0.23
-0.07
-0.88
0.09
-0.04
270
0.0040
0.16
-0.05
-0.95
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 22 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.