Event risk before this expiration:Jobs report Fri, Nov 6 · CPI release Tue, Nov 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 — 420 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)TSM open contracts per strike for Fri, Nov 20.
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, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 35.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.80
-0.25
410
0.0070
0.32
-0.25
-0.21
0.78
-0.26
412.5
0.0074
0.33
-0.26
-0.22
0.76
-0.27
415
0.0078
0.35
-0.27
-0.24
0.72
-0.29
420
0.0085
0.37
-0.29
-0.28
0.70
-0.30
422.5
0.0088
0.39
-0.30
-0.31
0.67
-0.30
425
0.0092
0.40
-0.31
-0.33
0.65
-0.31
427.5
0.0095
0.41
-0.32
-0.35
0.63
-0.32
430
0.0097
0.42
-0.32
-0.38
0.58
-0.33
435
0.0102
0.43
-0.33
-0.43
0.53
-0.33
440
0.0104
0.44
-0.34
-0.48
0.47
-0.33
445
0.0105
0.44
-0.33
-0.53
0.42
-0.32
450
0.0104
0.43
-0.32
-0.58
0.37
-0.31
455
0.0101
0.42
-0.31
-0.64
0.32
-0.29
460
0.0096
0.40
-0.29
-0.69
0.24
-0.24
470
0.0083
0.34
-0.25
-0.78
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 57 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.