C· Citigroup
Open interest · contracts by strike
Spot
136.2
Max Pain
135
Call OI
59,574
Put OI
32,125
P/C ratio
0.54
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 135
Spot 136.2
155
2,913
152.5
150
7,604
149
148
147
146
145
1,808
8,206
144
143
2,685
142
808
141
2,549
140
3,054
11,836
Call OI
139
1,299
138
540
3,072
137
136
492
135
5,218
6,939
Max pain
134
133
810
132
131
507
130
5,906
4,876
129
128
509
127
126
125
4,174
1,596
124
123
122
121
120
6,035
3,364
Put OI
119
118
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
C 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.