This page reflects OSIS options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.
Published Snapshot
May 20, 2026 close
OSIS Options Chain
Data as of market close May 20, 2026
Compare calls and puts side by side with OI, volume, IV, and positioning context.
Control Row
Next expiry (DTE 29)
Blank greek cells usually mean usable implied volatility was unavailable for that contract in the market-close snapshot.
Open Interest by Strike
IV Skew
Volume by Strike
Calls
Strike
Last
Bid
Ask
Chg
Vol
OI
IV
Delta
Gamma
Theta
Vega
Rho
210.00
13.50
11.00
13.70
0.00
4
6
54.0%
0.556
0.0123
-0.231
0.235
0.082
220.00
5.86
6.30
8.70
0.00
11
13
50.9%
0.427
0.0129
-0.215
0.234
0.065
250.00
1.00
0.65
2.40
-2.50
12
11
53.2%
0.154
0.0075
-0.133
0.141
0.024
270.00
2.03
0.00
3.50
0.00
1
6
63.1%
0.102
0.0047
-0.118
0.106
0.016
280.00
1.70
0.00
3.70
0.00
2
2
70.7%
0.098
0.0041
-0.128
0.103
0.015
290.00
1.48
0.00
3.70
0.00
1
1
76.9%
0.091
0.0036
-0.132
0.098
0.014
310.00
0.80
0.00
3.40
0.00
0
7
86.8%
0.077
0.0028
-0.130
0.086
0.012
340.00
10.80
0.00
1.90
0.00
2
2
91.2%
0.044
0.0017
-0.088
0.055
0.007
350.00
3.51
0.00
3.40
0.00
0
3
106.6%
0.065
0.0020
-0.140
0.075
0.010
360.00
6.20
0.00
3.40
0.00
0
1
111.0%
0.063
0.0019
-0.142
0.073
0.009
370.00
1.85
0.00
3.40
0.00
1
4
115.3%
0.061
0.0017
-0.144
0.072
0.009
380.00
1.55
0.00
3.40
0.00
0
1
119.4%
0.059
0.0016
-0.145
0.070
0.009
Puts
Strike
Last
Bid
Ask
Chg
Vol
OI
IV
Delta
Gamma
Theta
Vega
Rho
180.00
1.41
0.20
4.40
0.00
0
1
53.7%
-0.123
0.0064
-0.109
0.121
-0.022
195.00
1.60
3.70
6.90
0.00
5
6
50.5%
-0.254
0.0107
-0.159
0.191
-0.047
200.00
7.22
5.10
7.50
4.12
1
15
52.6%
-0.319
0.0114
-0.184
0.213
-0.059
210.00
11.22
9.10
11.60
4.02
1
4
51.0%
-0.444
0.0130
-0.194
0.235
-0.083
220.00
13.09
13.70
17.00
0.00
15
9
49.5%
-0.576
0.0133
-0.183
0.233
-0.110
230.00
13.40
20.60
23.60
0.00
1
9
47.9%
-0.703
0.0121
-0.150
0.206
-0.136
240.00
12.99
29.10
31.50
0.00
2
1
47.4%
-0.805
0.0098
-0.111
0.164
-0.160
250.00
22.50
37.30
40.20
0.00
0
1
46.9%
-0.880
0.0071
-0.070
0.119
-0.179
270.00
39.72
56.90
60.40
0.00
0
0
63.3%
-0.897
0.0048
-0.087
0.107
-0.198
280.00
38.80
66.90
70.40
0.00
0
0
69.9%
-0.905
0.0041
-0.091
0.101
-0.207
390.00
99.00
176.90
180.30
0.00
1
0
123.0%
-0.943
0.0016
-0.099
0.068
-0.301
420.00
130.50
206.90
210.40
0.00
3
0
78.9%
-0.998
0.0001
0.045
0.003
-0.332
430.00
141.00
216.90
220.40
0.00
1
0
81.6%
-0.998
0.0001
0.046
0.003
-0.340
440.00
151.00
226.90
230.80
0.00
2
0
105.1%
-0.990
0.0004
0.022
0.016
-0.347
How to Read the Chain
Use this market-close chain snapshot to compare liquidity, pricing, IV, and per-contract greeks across the active expiration.
How to scan it
Start with strike, bid/ask spread, open interest, and volume. Then use IV and greeks to decide whether a contract fits your directional, income, or volatility idea.
What matters first
Clean fills matter before a contract looks mathematically attractive. A thin market can erase the edge you think you found.
What can mislead you
Low premium, high IV, or one convenient delta do not make a trade by themselves. Check how far the strike sits from spot, expected move, and the event calendar.
Greeks are close-of-day estimates, and blank greek cells usually mean usable implied volatility was unavailable for that contract.