PTGX: Protagonist Therapeutics Inc.

As of Friday, September 11th, 2026

$ 148.18

+3.02 +2.08%

Open: 147.18
High: 150.48
Low: 145.82
Volume: 474,431
Previous Close on Thursday, September 10th, 2026

$ 145.16

+0.07 +0.05%

Open: 143.29
High: 146.51
Low: 142.00
Volume: 538,164

Historical Data

Date Open High Low Close Volume Chg %Chg
2026-09-11 147.18 150.48 145.82 148.18 474,431 +3.02 +2.08
2026-09-10 143.29 146.51 142.00 145.16 538,164 +0.07 +0.05
2026-09-09 146.05 151.19 144.46 145.09 530,488 -0.85 -0.58
2026-09-08 143.61 147.29 142.00 145.94 700,123 +0.22 +0.15
2026-09-04 146.47 147.99 144.01 145.72 500,312 -3.08 -2.07
2026-09-03 146.68 149.49 144.00 148.80 352,505 +2.72 +1.86
2026-09-02 148.00 149.42 144.61 146.08 558,688 -0.41 -0.28
2026-09-01 147.75 150.34 144.73 146.49 53,077 -1.26 -0.85
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Metrics and Technicals

Period High Low Chg %Chg Max Drawdown SMA
Peak Trough %Loss
Period High Low Chg %Chg MDD SMA
5D 151.19
On 2026-09-09		 142.00
On 2026-09-08		 -0.62 -0.42 151.19
On 2026-09-09		 142.00
On 2026-09-10		 -6.08 146.02
10D 151.19
On 2026-09-09		 141.95
On 2026-08-31		 -1.32 -0.88 151.19
On 2026-09-09		 142.00
On 2026-09-10		 -6.08 146.35
20D 160.81
On 2026-08-19		 141.95
On 2026-08-31		 -3.24 -2.14 160.81
On 2026-08-19		 141.95
On 2026-08-31		 -11.73 150.04
WTD 151.19
On 2026-09-09		 142.00
On 2026-09-08		 2.46 1.69 151.19
On 2026-09-09		 142.00
On 2026-09-10		 -6.08 146.09
MTD 151.19
On 2026-09-09		 142.00
On 2026-09-08		 0.43 0.29 151.19
On 2026-09-09		 142.00
On 2026-09-10		 -6.08 146.43
As of Friday, September 11th, 2026
 
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15.85 -1.99 -11.15
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VIX3M

CBOE S&P 500 3-Month Volatility Index

18.59 -1.14 -5.78
 
Recent
Ticker Last Chg %Chg Volume
PTGX

Protagonist Therapeutics Inc.

148.18 +3.02 +2.08 474,431