AON· Aon plc
Open interest · contracts by strike
Spot
302.7
Max Pain
320
Call OI
566
Put OI
596
P/C ratio
1.05
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 320
Spot 302.7
340
13
160
330
79
177
320
96
191
Call OI
310
30
21
300
71
15
290
239
Put OI
280
36
270
28
260
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
AON 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.