PFE· Pfizer
Open interest · contracts by strike
Spot
27.7
Max Pain
27
Call OI
273,697
Put OI
181,761
P/C ratio
0.66
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 27
Spot 27.7
31
21,209
30.5
30
42,080
29.5
29
36,089
28.5
5,372
28
27,414
67,982
Call OI
27.5
3,931
27
50,438
31,428
Put OI
26.5
26
14,852
32,408
25.5
25
48,045
26,183
24.5
24
32,223
6,469
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
PFE 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.