EFX· Equifax
Open interest · contracts by strike
Spot
169
Max Pain
180
Call OI
285
Put OI
704
P/C ratio
2.47
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 180
Spot 169
190
81
185
132
Call OI
180
223
25
Max pain
175
51
17
170
53
13
165
288
Put OI
160
31
155
150
31
145
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
EFX 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.