Protagonist Therapeutics, Inc.Close $100.88EOD only
Max Pain
$95.00
Next expiry Jun 18, 2026
Expected Move
±$9.97
9.9% from close
Price Gap
-5.88
Distance to max pain
IV Rank
4
Low premium
P/C OI
1.15
Slightly put-heavy
Consensus
—
No reports available
Published snapshot: May 20, 2026 close
End-of-day snapshot
This page reflects PTGX options positioning from the latest published market-close snapshot. Intraday price and contract changes are not displayed.
Published Snapshot
May 20, 2026 close
PTGX 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
70.00
36.44
29.10
33.00
0.00
4
4
66.5%
0.980
0.0025
-0.024
0.014
0.054
80.00
23.25
19.70
23.10
0.00
10
12
57.1%
0.938
0.0075
-0.043
0.035
0.058
85.00
15.69
15.00
18.50
0.00
0
2
52.2%
0.896
0.0121
-0.055
0.051
0.058
90.00
13.38
10.50
14.10
0.00
4
40
68.2%
0.760
0.0160
-0.111
0.088
0.050
95.00
9.79
6.50
10.10
0.00
4
52
60.4%
0.676
0.0209
-0.113
0.102
0.046
100.00
6.92
5.00
6.50
0.00
10
64
52.7%
0.562
0.0263
-0.108
0.112
0.040
105.00
3.80
1.80
4.00
0.00
5
7
49.6%
0.424
0.0278
-0.100
0.111
0.031
110.00
1.70
0.10
2.55
0.00
133
139
50.2%
0.303
0.0244
-0.089
0.099
0.022
115.00
1.05
0.00
2.00
0.00
22
22
55.8%
0.232
0.0192
-0.086
0.087
0.017
Puts
Strike
Last
Bid
Ask
Chg
Vol
OI
IV
Delta
Gamma
Theta
Vega
Rho
85.00
1.27
0.20
1.35
0.00
3
1,421
50.4%
-0.097
0.0120
-0.041
0.049
-0.008
90.00
1.20
0.15
3.40
0.00
10
11
51.6%
-0.189
0.0185
-0.066
0.077
-0.016
95.00
3.27
0.15
4.00
0.00
0
3
58.3%
-0.320
0.0216
-0.098
0.102
-0.029
100.00
5.20
2.75
5.70
0.00
7
37
53.4%
-0.438
0.0259
-0.097
0.112
-0.039
105.00
7.55
5.20
8.60
0.00
0
10
53.8%
-0.566
0.0257
-0.096
0.112
-0.052
110.00
11.10
8.50
12.50
0.00
0
10
58.3%
-0.664
0.0220
-0.095
0.104
-0.063
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.