■ 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 — 1380 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)MPWR 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 ≈ 53.6% · 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
0.92
-1.11
1260
0.0013
0.29
-1.11
-0.08
0.89
-1.45
1280
0.0017
0.37
-1.46
-0.11
0.85
-1.82
1300
0.0022
0.46
-1.83
-0.15
0.80
-2.20
1320
0.0026
0.55
-2.21
-0.20
0.74
-2.55
1340
0.0030
0.63
-2.56
-0.26
0.67
-2.85
1360
0.0033
0.70
-2.86
-0.33
0.60
-3.05
1380
0.0036
0.75
-3.07
-0.40
0.53
-3.15
1400
0.0037
0.77
-3.17
-0.47
0.49
-3.16
1410
0.0037
0.78
-3.17
-0.51
0.46
-3.13
1420
0.0037
0.77
-3.15
-0.55
0.42
-3.08
1430
0.0036
0.76
-3.10
-0.58
0.38
-3.01
1440
0.0036
0.74
-3.02
-0.62
0.35
-2.91
1450
0.0034
0.72
-2.93
-0.65
0.32
-2.79
1460
0.0033
0.69
-2.81
-0.69
0.29
-2.66
1470
0.0032
0.66
-2.67
-0.72
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.