United Microelectronics CorporaClose $18.48EOD only
Max Pain
$20.00
Next expiry Aug 21, 2026
Expected Move
±$0.75
4.1% from close
Price Gap
+1.52
Distance to max pain
IV Rank
15
Low premium
P/C OI
0.43
Slightly call-heavy
Consensus
—
No reports available
Published snapshot: Aug 18, 2026 close
End-of-day snapshot
This page reflects UMC 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 — UMC
Data as of market close Aug 18, 2026
Nearest listed expiration 2026-08-21 shows max pain at $20.00 (1.52 above spot). Use this page to evaluate pin-risk zones, strike pressure, and open-interest concentration before selecting trade structure.
Max Pain Strike
$20.00
Nearest expiry
Expected Move
±$0.75
±4.1%
Days to Expiry
3
Calendar days
Total Call OI
25,495
Nearest expiry
Total Put OI
13,259
Nearest expiry
P/C OI Ratio
0.52
Put-heavy
Spot Price
$18.48
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
$14.00
6/18/2026, 11:32:19 PM
2026-07-17
$21.00
7/17/2026, 11:40:55 PM
2026-08-21NextUpdated
$20.00
8/18/2026, 11:42:46 PM
2026-09-18
$19.00
8/18/2026, 11:42:46 PM
2026-10-16
$18.00
8/18/2026, 11:42:46 PM
2027-01-15
$14.00
8/18/2026, 11:42:46 PM
Selected expiration: 2026-08-21 at max pain $20.00.
UMC pain by strike for 2026-08-21 expiration
Strike
Call Pain
Put Pain
Total Pain
12
0
9279800
9279800
13
200
7980300
7980500
14
700
6692700
6693400
15
1600
5464200
5465800
16
4000
4332200
4336200
17
8600
3363100
3371700
18
27600
2549100
2576700
19
73700
1892500
1966200
20
216600
1348500
1565100
21
890200
940900
1831100
22
1690400
629200
2319600
23
2545300
372700
2918000
24
3450400
243900
3694300
25
4495000
179900
4674900
26
5642900
125600
5768500
27
7165900
72800
7238700
28
8913000
20300
8933300
29
10909800
7700
10917500
30
12910500
3800
12914300
31
15061900
3200
15065100
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.