NSC· Norfolk Southern
Open interest · contracts by strike
Spot
320.3
Max Pain
330
Call OI
1,600
Put OI
2,822
P/C ratio
1.76
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 330
Spot 320.3
360
152
350
176
340
85
567
Call OI
330
463
418
Max pain
320
1,341
81
Put OI
310
220
154
300
597
290
60
280
55
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
NSC 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 → 11 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 → 11 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.