■ 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 — 150 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)EMR open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 23.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 21
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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.91
-0.15
149
0.0140
0.04
-0.15
-0.10
0.90
-0.15
150
0.0154
0.04
-0.15
-0.11
0.88
-0.16
152.5
0.0196
0.05
-0.15
-0.13
0.85
-0.16
155
0.0258
0.05
-0.16
-0.16
0.80
-0.17
157.5
0.0350
0.06
-0.16
-0.20
0.73
-0.17
160
0.0483
0.08
-0.17
-0.28
0.61
-0.17
162.5
0.0630
0.09
-0.17
-0.40
0.45
-0.18
165
0.0635
0.09
-0.18
-0.56
0.32
-0.18
167.5
0.0504
0.08
-0.18
-0.68
0.25
-0.18
170
0.0383
0.07
-0.18
-0.75
0.20
-0.18
172.5
0.0296
0.07
-0.18
-0.80
0.16
-0.18
175
0.0235
0.06
-0.18
-0.83
0.12
-0.17
180
0.0159
0.05
-0.17
-0.88
0.10
-0.16
185
0.0116
0.04
-0.16
-0.90
0.08
-0.15
190
0.0088
0.03
-0.15
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 44 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.