This page reflects BIO 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 — BIO
Data as of market close Aug 18, 2026
Nearest listed expiration 2026-08-21 shows max pain at $320.00 (32.69 below spot). Use this page to evaluate pin-risk zones, strike pressure, and open-interest concentration before selecting trade structure.
Max Pain Strike
$320.00
Nearest expiry
Expected Move
±$7.75
±2.2%
Days to Expiry
3
Calendar days
Total Call OI
20
Nearest expiry
Total Put OI
310
Nearest expiry
P/C OI Ratio
15.50
Put-heavy
Spot Price
$352.69
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
2026-06-18
$250.00
6/18/2026, 11:07:08 PM
2026-07-17
$290.00
7/17/2026, 11:06:52 PM
2026-08-21NextUpdated
$320.00
8/18/2026, 11:06:42 PM
2026-09-18
$310.00
8/18/2026, 11:06:42 PM
2026-12-18
$210.00
8/18/2026, 11:06:42 PM
2027-03-19
$300.00
8/18/2026, 11:06:42 PM
Selected expiration: 2026-08-21 at max pain $320.00.
BIO pain by strike for 2026-08-21 expiration
Strike
Call Pain
Put Pain
Total Pain
250
0
1337000
1337000
260
0
1036000
1036000
270
0
735000
735000
280
0
580000
580000
290
0
435000
435000
300
1000
290000
291000
310
3000
148000
151000
320
5000
6000
11000
330
7000
4000
11000
340
13000
2000
15000
350
22000
0
22000
360
36000
0
36000
380
70000
0
70000
390
89000
0
89000
400
108000
0
108000
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.