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 — 61 — is the max pain price.
Open interest by strike · Fri, Mar 19
■ calls (up)■ puts (down)PHO open contracts per strike for Fri, Mar 19.
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, Mar 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Mar 19
— call IV— put IVATM ≈ 18.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Mar 19
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, Mar 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.82
-0.01
63
0.0214
0.12
-0.01
-0.17
0.77
-0.01
66
0.0297
0.14
-0.01
-0.22
0.75
-0.01
67
0.0334
0.14
-0.01
-0.25
0.72
-0.01
68
0.0375
0.15
-0.01
-0.28
0.69
-0.01
69
0.0420
0.16
-0.01
-0.31
0.65
-0.01
70
0.0467
0.17
-0.01
-0.35
0.60
-0.01
71
0.0510
0.17
-0.01
-0.40
0.55
-0.01
72
0.0542
0.18
-0.01
-0.46
0.50
-0.01
73
0.0554
0.18
-0.01
-0.51
0.44
-0.01
74
0.0543
0.18
-0.01
-0.57
0.35
-0.01
76
0.0477
0.17
-0.01
-0.66
0.27
-0.01
79
0.0366
0.15
-0.01
-0.75
0.25
-0.01
80
0.0336
0.14
-0.01
-0.77
0.18
-0.01
85
0.0229
0.12
-0.01
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 19 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.