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Smart Investors Daily
PT

NASDAQ · PTGX

Protagonist Therapeutics, Inc.

Healthcare · Biotechnology

$138.69

Down-$1.94 (-1.38%)

Updated Oct 7, 2026, 6:29 AM

SID Score

4.8/10

Composite research score

Smart Money

56/100

Neutral

Market cap
5.77B
P/E ratio
128.14
Dividend yield
0.00%
52-week range
$90.58 – $160.81
Volume
635.72K
Avg. volume
1.18M

Price performance · PTGX

PTGX price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Oct 6, 2026

PTGX closed at $138.69 after 21 trading sessions, down 4.97% for the selected period.

Last close
$138.69
Period change
-4.97%
Period low
$137.34
Period high
$148.18
Daily close
View OHLC price history
PTGX OHLC price history, latest 40 sessions
DateOpenHighLowCloseVolume
Oct 6, 2026$140.34$141.00$136.09$138.69635.72K
Oct 5, 2026$139.96$142.51$138.08$140.631.27M
Oct 2, 2026$140.99$141.71$138.37$140.06760.3K
Oct 1, 2026$139.23$143.68$138.37$139.19886.25K
Sep 30, 2026$141.60$143.74$140.44$140.89787.66K
Sep 29, 2026$143.45$144.09$138.88$140.97508.01K
Sep 28, 2026$142.21$143.685$140.2401$142.44925.46K
Sep 25, 2026$141.81$143.45$138.23$141.86809.29K
Sep 24, 2026$138.76$140.80$134.10$137.34989.23K
Sep 23, 2026$144.27$145.28$137.88$138.70513.23K
Sep 22, 2026$144.64$147.71$144.50$145.07806.18K
Sep 21, 2026$143.22$145.37$141.09$144.98822.2K
Sep 18, 2026$143.09$144.58$140.435$143.001.84M
Sep 17, 2026$144.39$146.50$142.31$143.70558.9K
Sep 16, 2026$144.19$146.19$140.88$142.84507.31K
Sep 15, 2026$147.48$147.99$142.00$143.40637.52K
Sep 14, 2026$150.23$151.24$146.83$147.78608.02K
Sep 11, 2026$147.18$150.48$145.82$148.18478.04K
Sep 10, 2026$143.29$146.51$142.00$145.16543.13K
Sep 9, 2026$146.05$151.185$144.46$145.09530.53K
Sep 8, 2026$143.61$147.29$142.00$145.94700.13K

Latest PTGX news

The latest Smart Investors Daily articles mentioning PTGX.

PTGX research

Overview

Company profile and research snapshot.

Company profile

Protagonist Therapeutics Inc is a clinical-stage biopharmaceutical company having a proprietary technology platform that enables the discovery and development of novel constrained peptide-based drug candidates to address medical needs. Its pipeline products include Rusfertide (PTG-300) and JNJ-2113.

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Analyst outlook

Consensus and target data currently published for this company.

Consensus
—
Average target
$90.67
Implied upside
—
Analysts
—
PTGX recent ratings
DateFirmRatingTarget
Sep 1, 2026BMO CapitalOutperform—
Sep 1, 2026BarclaysOverweight—
Aug 31, 2026HC Wainwright & Co.Buy—
Aug 31, 2026CitigroupBuy—
Aug 17, 2026BMO CapitalOutperform—
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Yahoo · Sep 21, 2026

Psoriatic Arthritis Market Landscape: 6 Key Late-Stage Drugs Set to Drive Future Growth | DelveInsight

The launch of emerging therapies such as ILUMYA/ILUMETRI (tildrakizumab-asmn; Sun Pharma), Izokibep (Affibody Medical), ICOTYDE (icotrokinra; Johnson & Johnson), Zasocitinib (TAK-279; Takeda), Sonelokimab (MoonLake Immunotherapeutics), Vunakizumab (Suzhou Suncadia), SPY 072 (Spyre Therapeutics), PN-881 (Protagonist Therapeutics), and others is expected to significantly reshape the Psoriatic Arthritis (PsA) market by expanding treatment options and addressing unmet needs among patients with inade

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