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Protagonist Therapeutics, Inc. Common Stock PTGX

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Market datapartial · fetched 2026-10-23T19:39:12.509Z

Delta surfaceAlpaca · derived absolute-delta buckets · 2026-11-20

Calculation methodology

Options historyIV: ThetaData historical Greeks, equal-weight mean of call/put 50-delta IV across the next four listed Friday-cycle expirations, including holiday shifts verified against ThetaData’s market calendar. Missing inputs leave gaps. Skew and implied move: recorded expiration-specific observations.

History data

PriceAlpaca · sip · 2026-10-23T19:38:22.500066169Z

FundamentalsAlpha Vantage · unavailable

Share price$138.89
1D+1.4%
$135$136$137$138$1405:30 AM6:30 AM9:00 AM1:00 PMPTGX
Sold putSold call

Protagonist Therapeutics, Inc. Common Stock options

Live interpolated PTGX call and put midpoint premiums by absolute delta.Protagonist Therapeutics, Inc. Common Stock$2.86$8.22$13.58$18.94$24.30$115.86$127.20$138.53$149.86$161.1920Δ25Δ30Δ35Δ40Δ45Δ50Δ55Δ60Δ65Δ70Δ75Δ80ΔOPTION PRICELive PTGX spot · $138.89PTGX PRICE$4.28$4.81$5.34$6.57$7.82$9.07$10.32$11.57$14.27$3.44$4.31$5.17$6.04$7.03$8.87$10.73$12.70$15.15$18.95$22.75
PutsCheap0.95×
CallsCheap0.84×
SkewBearish+6.78 pp
Implied moveBearish±$12.37
TiltBearish21.7% PUT
Table
Values and derived Greeks for the plotted delta buckets
DeltaCallsPuts
Pseudo strikeIVB/E movePseudo strikeIVB/E move
20Δ
25Δ
30Δ131.7142.6%7.6%
35Δ133.8542.5%6.7%
40Δ144.4741.6%7.1%135.9942.3%5.8%
45Δ142.2639.3%5.9%138.1342.1%4.9%
50Δ140.0537.0%4.7%140.3042.3%4.0%
55Δ138.0637.5%4.1%142.7644.8%3.6%
60Δ136.0838.0%3.6%145.2547.1%3.1%
65Δ134.0938.6%3.1%147.9847.7%2.6%
70Δ132.1139.1%2.5%151.1548.9%2.1%
75Δ130.1239.6%2.0%155.5551.6%1.6%
80Δ126.9242.3%1.7%159.9554.4%1.2%

20Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

25Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
IV
B/E move

30Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
131.71
IV
42.6%
B/E move
7.6%

35Δ

Calls
Pseudo strike
IV
B/E move
Puts
Pseudo strike
133.85
IV
42.5%
B/E move
6.7%

40Δ

Calls
Pseudo strike
144.47
IV
41.6%
B/E move
7.1%
Puts
Pseudo strike
135.99
IV
42.3%
B/E move
5.8%

45Δ

Calls
Pseudo strike
142.26
IV
39.3%
B/E move
5.9%
Puts
Pseudo strike
138.13
IV
42.1%
B/E move
4.9%

50Δ

Calls
Pseudo strike
140.05
IV
37.0%
B/E move
4.7%
Puts
Pseudo strike
140.30
IV
42.3%
B/E move
4.0%

55Δ

Calls
Pseudo strike
138.06
IV
37.5%
B/E move
4.1%
Puts
Pseudo strike
142.76
IV
44.8%
B/E move
3.6%

60Δ

Calls
Pseudo strike
136.08
IV
38.0%
B/E move
3.6%
Puts
Pseudo strike
145.25
IV
47.1%
B/E move
3.1%

65Δ

Calls
Pseudo strike
134.09
IV
38.6%
B/E move
3.1%
Puts
Pseudo strike
147.98
IV
47.7%
B/E move
2.6%

70Δ

Calls
Pseudo strike
132.11
IV
39.1%
B/E move
2.5%
Puts
Pseudo strike
151.15
IV
48.9%
B/E move
2.1%

75Δ

Calls
Pseudo strike
130.12
IV
39.6%
B/E move
2.0%
Puts
Pseudo strike
155.55
IV
51.6%
B/E move
1.6%

80Δ

Calls
Pseudo strike
126.92
IV
42.3%
B/E move
1.7%
Puts
Pseudo strike
159.95
IV
54.4%
B/E move
1.2%

Options history

No recorded observations