This page reflects BIRK options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.
Published Snapshot
Aug 18, 2026 close
BIRK Options Chain
Data as of market close Aug 18, 2026
Compare calls and puts side by side with OI, volume, IV, and positioning context.
Control Row
Next expiry (DTE 3)
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
30.00
9.80
6.70
9.30
0.00
1
13
225.8%
0.877
0.0267
-0.262
0.007
0.002
32.50
5.80
4.60
6.70
0.00
1
0
181.6%
0.818
0.0430
-0.272
0.009
0.002
35.00
5.00
1.70
3.80
0.00
0
30
89.7%
0.789
0.0953
-0.149
0.010
0.002
37.50
0.66
0.00
1.30
-1.69
36
359
91.8%
0.484
0.1286
-0.208
0.013
0.001
40.00
0.15
0.00
0.45
-0.23
19
219
68.0%
0.130
0.0920
-0.081
0.007
0.000
42.50
0.23
0.00
0.50
0.00
4
287
105.9%
0.092
0.0462
-0.099
0.006
0.000
45.00
0.04
0.00
0.05
-0.01
20
1,614
86.7%
0.009
0.0083
-0.012
0.001
0.000
47.50
0.05
0.00
0.10
0.00
1
34
118.8%
0.014
0.0087
-0.023
0.001
0.000
50.00
0.05
0.00
0.40
0.00
7
242
179.3%
0.042
0.0147
-0.090
0.003
0.000
52.50
0.15
0.00
0.95
0.00
5
11
245.5%
0.076
0.0173
-0.198
0.005
0.000
55.00
0.52
0.00
0.10
0.00
4
13
175.0%
0.009
0.0040
-0.023
0.001
0.000
60.00
0.53
0.00
1.00
0.00
3
4
313.7%
0.062
0.0116
-0.217
0.004
0.000
Puts
Strike
Last
Bid
Ask
Chg
Vol
OI
IV
Delta
Gamma
Theta
Vega
Rho
22.50
0.60
-
2.15
0.00
0
1
604.1%
-0.116
0.0096
-0.664
0.007
-0.000
25.00
0.05
0.00
0.05
0.00
10
45
171.9%
-0.004
0.0021
-0.012
0.000
-0.000
27.50
0.05
0.00
0.05
0.00
60
75
134.4%
-0.005
0.0034
-0.012
0.001
-0.000
30.00
0.04
0.00
0.05
0.00
1
107
99.6%
-0.007
0.0060
-0.011
0.001
-0.000
32.50
0.03
0.00
0.05
0.00
72
1,206
67.2%
-0.012
0.0135
-0.011
0.001
-0.000
35.00
0.06
0.00
0.15
-0.04
3
10,112
54.9%
-0.101
0.0957
-0.054
0.006
-0.000
37.50
0.75
0.35
1.05
0.20
81
3,105
58.2%
-0.541
0.2020
-0.127
0.013
-0.002
40.00
2.80
2.00
3.50
0.75
6
9,051
110.7%
-0.746
0.0858
-0.196
0.011
-0.003
42.50
4.85
4.40
5.40
0.83
3
35
89.1%
-0.945
0.0372
-0.051
0.004
-0.003
45.00
7.00
6.50
8.10
1.30
14
37
146.9%
-0.912
0.0322
-0.127
0.005
-0.003
47.50
10.05
8.40
10.60
-0.20
11
3,020
175.4%
-0.927
0.0235
-0.132
0.005
-0.004
50.00
10.15
11.20
13.00
0.00
6
15
184.8%
-0.953
0.0157
-0.096
0.003
-0.004
55.00
12.70
12.50
16.30
0.00
0
13
0.0%
-1.000
0.0000
0.006
0.000
-0.005
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.