Protagonist Therapeutics Inc (PTGX) returns
Protagonist Therapeutics returns over 10 years
$1,000 invested in Protagonist Therapeutics ten years ago was worth $7,364 at the close on October 30, 2026, with dividends reinvested: an average return of 22.1% a year. The same $1,000 in the S&P 500 (SPY) became $4,166.
Total return by period
| Period | Total return | A year, on average | $1,000 became | S&P 500 (SPY) |
|---|---|---|---|---|
| 1 month | +2.8% | — | $1,028 | -0.9% |
| 3 months | +4.5% | — | $1,045 | +2.1% |
| Year to date | +65.8% | — | $1,658 | +11.7% |
| 1 year | +86.1% | — | $1,861 | +12.4% |
| 3 years | +914.4% | +116.5% | $10,144 | +88.5% |
| 5 years | +364.9% | +36.0% | $4,649 | +76.0% |
| 10 years | +636.4% | +22.1% | $7,364 | +316.6% |
Protagonist Therapeutics return by calendar year
| Year | PTGX | S&P 500 (SPY) | Difference |
|---|---|---|---|
| 2026 to date | +65.8% | +11.7% | +54.2% |
| 2025 | +126.3% | +17.7% | +108.6% |
| 2024 | +68.3% | +24.9% | +43.5% |
| 2023 | +110.2% | +26.2% | +84.0% |
| 2022 | -68.1% | -18.2% | -49.9% |
| 2021 | +69.6% | +28.7% | +40.9% |
| 2020 | +186.0% | +18.4% | +167.6% |
| 2019 | +4.8% | +31.2% | -26.5% |
| 2018 | -67.6% | -4.6% | -63.1% |
| 2017 | -5.4% | +21.7% | -27.1% |
Past returns do not predict future returns. Returns are computed from our daily closes, adjusted for splits and with dividends reinvested on their ex-dates; taxes and trading costs are left out.
See also: PTGX financials · PTGX valuation
No forecast, no recommendation. This page describes Protagonist Therapeutics Inc from published data; it is not advice to buy, sell or hold any security.
Figures as of the close on Oct 30, 2026 unless a row says otherwise. Prices are split adjusted; returns include dividends reinvested. Data may be delayed. See the disclaimer and how TrendArc works.