MPC· Marathon Petroleum
Open interest · contracts by strike
Spot
396.5
Max Pain
370
Call OI
7,713
Put OI
8,282
P/C ratio
1.07
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 370
Spot 396.5
450
78
440
225
430
264
420
476
410
1,166
400
455
1,089
390
1,512
558
380
685
633
370
1,503
1,866
Call OI
360
1,709
562
Put OI
350
774
463
340
1,570
333
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.
History
MPC open interest, night by night.
Total call and put contracts held on each recorded session — the level the strike profile above is a snapshot of.
10 Jun → 14 Sep
OI totals over time
Contracts outstanding, summed over the whole captured chain — every listed expiry and strike, wider than the strike band and single expiry shown in the profile above.
call OI, contractsput OI, contracts
One reading per session, captured nightly after the close, 10 Jun → 14 Sep, over CBOE delayed (~15-min) chains, computed across the full listed chain. Gaps are weekends, holidays and sessions a capture missed; any reading can be absent on a session that was captured, and the series is broken rather than drawn through it.