This page reflects GSK options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.
Published Snapshot
Aug 18, 2026 close
Max Pain — GSK
Data as of market close Aug 18, 2026
Nearest listed expiration 2026-08-21 shows max pain at $51.00 (0.15 below spot). Use this page to evaluate pin-risk zones, strike pressure, and open-interest concentration before selecting trade structure.
Max Pain Strike
$51.00
Nearest expiry
Expected Move
±$1.12
±2.2%
Days to Expiry
3
Calendar days
Total Call OI
12,216
Nearest expiry
Total Put OI
26,356
Nearest expiry
P/C OI Ratio
2.16
Put-heavy
Spot Price
$51.15
Published close
Consensus
-
Open report for full read
Max Pain by Expiration
Pain by Strike
Drill into expiration
Selected: 2026-08-21
Expiration
Max Pain Strike
Last Updated
2026-08-07
$52.00
8/7/2026, 11:15:01 PM
2026-08-14
$52.00
8/14/2026, 11:15:00 PM
2026-08-21NextUpdated
$51.00
8/18/2026, 11:18:34 PM
2026-08-28
$50.00
8/18/2026, 11:18:34 PM
2026-09-04
$51.00
8/18/2026, 11:18:34 PM
2026-09-11
$48.00
8/18/2026, 11:18:34 PM
2026-09-18
$50.00
8/18/2026, 11:18:34 PM
2026-09-25
$50.00
8/18/2026, 11:18:34 PM
2026-10-02
$48.00
8/18/2026, 11:18:34 PM
2026-11-20
$45.00
8/18/2026, 11:18:34 PM
2027-01-15
$42.00
8/18/2026, 11:18:34 PM
2027-02-19
$50.00
8/18/2026, 11:18:34 PM
Selected expiration: 2026-08-21 at max pain $51.00.
GSK pain by strike for 2026-08-21 expiration
Strike
Call Pain
Put Pain
Total Pain
30
0
44415050
44415050
35
500
31237050
31237550
39
900
20773850
20774750
40
1100
18158250
18159350
41
1300
15555150
15556450
42
1500
13011650
13013150
43
2300
10475650
10477950
44
3100
7940450
7943550
45
3900
5418250
5422150
46
5000
4317550
4322550
47
6100
3228350
3234450
47.5
6750
2705500
2712250
48
7400
2185800
2193200
48.5
10000
1677400
1687400
49
12650
1171500
1184150
49.5
16250
682100
698350
50
24900
200600
225500
51
79900
128600
208500
52
187900
84600
272500
53
427600
59100
486700
How to Read Max Pain
Compare pin-risk and strike-pressure across expirations from the latest published close.
What max pain measures
Max pain is the strike where option holders would collectively lose the most at expiration, based on open interest across the listed chain.
How traders use it
It is most useful as a possible pinning zone, especially when spot is already trading near a crowded strike into expiration.
What can break it
Strong directional flows, news, or fast spot moves can overwhelm any pinning tendency, so max pain should support a thesis rather than drive it alone.
The closer you are to expiration, the more useful this becomes as context and the less useful it is as a standalone prediction.