$128.750
-7.352 (-5.71%)At close
Price Predictions
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PTGX Prediction & Forecast by Similar Chart Analysis
Alphio's PTGX stock price prediction model matches the current Protagonist Therapeutics Inc tape against historical breakout patterns, then publishes 1-day and 1-week targets first. The 1-day print is $128.07 (-0.53%). The 1-week path is $126.46 (-1.78%). Longer windows use the same pattern set plus seasonality; the 1-month and multi-year forecasts sit behind unlock because they include precise min / avg / max bands.
Should I Buy Protagonist Therapeutics Inc Stock?
Protagonist Therapeutics Inc is currently a hold. The stock has shown significant volatility, with a 5-day change of -10.42% and a year-to-date increase of +47.68%. Despite a recent profit of $162.8 million in Q2 2026, the RSI is very low at 19.989, indicating potential oversold conditions. However, insider selling has surged by 7175.14%, which raises concerns about the stock's short-term stability. The forward P/E ratio of 36.90 suggests that the stock is still relatively expensive compared to its earnings potential, especially given the recent high volatility in the market.
PTGX stock price ended at $128.75 on Friday, after losing -5.71%
Protagonist Therapeutics Inc (PTGX) last closed at $128.75, losing -5.71%. These facts feed the 1-day and 1-week PTGX price prediction above.
Analyst Consensus
Protagonist Therapeutics Inc (PTGX): 4 buy, 0 hold, 0 sell. Outlook: Strong Buy.
Sell / Buy
Technical signals summary based on buy and sell indicators. The gauge shows the overall market view.
Forecast Drivers
Protagonist Therapeutics Inc (PTGX) forecast drivers combine similar chart patterns, seasonality, and moving averages.
Similar patterns
Bearish
Seasonality
Bullish
SMA 20
Bearish
SMA 200
Bullish
Similar Chart Patterns
Stocks whose recent price path most closely matches PTGX, ranked by similarity.
Seasonality analysis for PTGX
Historically the probability of a positive October return for PTGX is 100.00%. April offers the highest probability of a positive month at 100.00%, while January is the weakest seasonal window. Alphio blends this calendar with technical signals and similar chart pattern matching before it writes the forecast.
10-year price projections for PTGX
| Month | Min Price | Avg Price | Max Price | Potential ROI |
|---|---|---|---|---|
| Oct 2026 | $49.63 | $64.05 | $72.45 | -50.25% |
| Nov 2026 | $61.01 | $76.05 | $90.62 | -40.93% |
| Dec 2026 | $40.24 | $55.78 | $69.30 | -56.68% |
In 2026, Protagonist Therapeutics Inc (PTGX) is projected to range from $40.24 to $90.62.
Protagonist Therapeutics Inc 2026 monthly forecast
In Oct 2026, Protagonist Therapeutics Inc is projected to average $64.05, with a low of $49.63 and high of $72.45.
In Nov 2026, Protagonist Therapeutics Inc is projected to average $76.05, with a low of $61.01 and high of $90.62.
In Dec 2026, Protagonist Therapeutics Inc is projected to average $55.78, with a low of $40.24 and high of $69.30.
This page is for research only and is not investment advice. Models can be wrong. Past performance does not guarantee future results.