The framework has shifted from accumulation to markdown since the last review. Price is trending lower. Sellers are in control and the prior trend has reversed. Price has moved down 7.6% since our last review. Ethical screening: FAIL. This security does not pass our values-based screening criteria. The risk-adjusted return profile shows excellent risk-adjusted returns. Our composite framework grades it C, carrying a low risk profile. Technically it is holding around 20% above its long-term trend line with momentum reading neutral. Over the past year the shares are up 88%. Our forward projection puts the odds of a 10% gain over the next month near 42%. The street (13 analysts) rates it strong buy, with a mean price target of $119.
Protagonist Therapeutics, Inc.
PTGX · Nasdaq · USD · Market cap $9.0B · 131 employees
Protagonist Therapeutics, Inc.
FAIL · Does not pass the screenScreen close, 2026-10-01 · not a live quote
Last reviewed 4 days ago
Screened 2026-10-01 · the tape above runs as of 13:03 UTC · two dates, stated on purpose · verdict and workings shown in full · never trimmed
What this means: price 139.19 against the desk's fair-value range, base estimate 171.00, over the last year.
- Trend Markdown
- Insiders no filings inside 60 days, left as found
- Positioning no disclosures inside 60 days, left as found
- Options no verdict drawn today, left as found
- Ethical does not pass the values gate
Our analytic regime reads on this name, dated and marked against the screened price. Small sample per name, and separate from the daily-framework accuracy on the Track Record page.
This name holds its markdown label.
Protagonist Therapeutics, Inc. holds its Markdown at $139.19. Consolidating, no directional conviction, held for 137 days.
| Phase | Markdown · caution |
| Quantitative state | Consolidating, no directional conviction, held for 137 days |
| Price at the screen | $139.19 |
| Valuation | 135.14 trailing · -698.92 forward price to earnings |
| Values screen | FAIL · score 70.0 |
| Beta | 1.79 |
Five Screens, Shown in Full
Does not pass. Interest-bearing securities
| Test | Figure | Limit | What it means | Status |
|---|---|---|---|---|
| Business activity | Permissible | Core business clean | Its core business isn't built on prohibited lines: no gambling, alcohol, tobacco, weapons, or interest-based lending. | Pass |
| Debt load | 1.54% | Below 33% | Interest-bearing debt is just 1.5% of its assets, well under the one-third ceiling: it does not run on borrowed money. | Pass |
| Interest-bearing cash | 65.70% | Below 33% | Interest-bearing cash and securities are 65.7% of assets, above the one-third limit. | Fail |
| Receivables | 19.89% | Below 49% | Money owed to the company is 19.9% of assets, under the 49% limit. | Pass |
| Revenue purity | 62.56% | Below 5% | 62.6% of revenue comes from non-compliant sources, over the 5% line. | Fail |
Five checks adapted from AAOIFI screening standards: business activity plus four balance-sheet ratios. All five must pass for ethical clearance. Every figure is arithmetic on public accounts, not judgement.
The Ethical ReadWhy It Falls Short, in Plain English
Protagonist Therapeutics,'s business is fine, but its cash and interest-bearing securities are about 66% of its assets, well over the ~33% line, so it does not pass on the financial screens.
Read as at 2026-10-04. It updates when the underlying figures move, and past reads are kept below.
What the Numbers Say It Is WorthThe Fair Value Range
Fair value range in USD, drawn from the 2026-10-01 screen. The gold marker is the market price at the same screen. A 22.9% margin of safety to the base estimate.
Third-party analyst targets: 13 covering, consensus None. The average target sits +23% from the screen price.
Reading the gap · Both our model and the analysts see meaningful upside from here.
Price History & ProjectionsWhere it has been, where the models see it going. History from market close data; projection points are our fair-value estimates and third-party analyst targets, dated to the 2026-10-01 screen.
Fair value and rating are our own model estimates; the Street's range reflects third-party analyst estimates. Analysis, not advice.
The Business, in Plain WordsPrice far ahead of unproven peptide hopes
Picture a biotech racing to sell an oral peptide for psoriasis before any proof it beats the pack. Protagonist trades at 141 dollars against our 118 dollar fair value, a negative 16 percent margin of safety that leaves no room for error. Revenue may be doubling yet the firm still posts a 155 percent negative profit margin and negative 17 percent return on equity, so the market is paying up for a story that has yet to turn into cash.
We pass because the numbers do not add up. Forward earnings sit at a negative 257 times while the stock price already exceeds both our value and the median analyst target. Strong buy ratings from thirteen analysts cannot change the fact that this remains a pre-profit development business with an unknown moat.
The usual biotech risks apply in full, from trial failures to dilution and competition that could wipe out any edge. Ethical screen passes but valuation and cash burn do not. Analysis, not advice.
| Forward P/E | -698.9x |
| Trailing P/E | 135.1xexpensive: the price assumes strong growth ahead |
| EPS, trailing | 1.03 |
| EPS, forward | -0.20 |
| Revenue growth | +3,749.2%growing very fast |
| Profit margin | 29.4%healthy profit margins |
| Return on equity | 11.0%a modest return on shareholder capital |
| FCF yield | 1.07% |
| Debt to equity | 1.10a meaningful debt load worth watching |
| Current ratio | 21.71comfortably covers its short-term bills |
| Beta | 1.79much more volatile than the market |
| Short interest, float | 0.15% |
| 52-week range | 62.24 - 160.81 |
| Market cap | $9.0B |
| Employees | 131 |
The risks · The things to watch: it already moves more than the market on an average day; as a biotechnology name, trial and regulatory outcomes can move it sharply either way.
Plain-English interpretation of our own screen data. Analysis, not advice.
Where & How to TradePTGX trades on Nasdaq. As a listed security it is accessible through almost any international broker offering its home market. New to this, or investing from abroad? Our guide to accessing global markets covers brokers, currencies and the practical steps.
Every Entry, As Written
The framework has shifted from markup to accumulation since the last review. Smart money appears to be quietly building positions. This typically precedes a markup phase. Price has moved up 3.0% since our last review. Ethical screening: FAIL. This security does not pass our values-based screening criteria. The risk-adjusted return profile shows excellent risk-adjusted returns. Our composite framework grades it C, carrying a low risk profile. Technically it is holding around 20% above its long-term trend line with momentum reading neutral. Over the past year the shares are up 88%. Our forward projection puts the odds of a 10% gain over the next month near 42%. The street (13 analysts) rates it strong buy, with a mean price target of $119.
The framework reads markup. Price is trending higher with momentum. The crowd has caught on and buyers are in control. Price has moved up 33.2% since our last review. Ethical screening: FAIL. This security does not pass our values-based screening criteria. The risk-adjusted return profile shows excellent risk-adjusted returns. Our composite framework grades it C, carrying a low risk profile. Technically it is holding around 20% above its long-term trend line with momentum reading neutral. Over the past year the shares are up 88%. Our forward projection puts the odds of a 10% gain over the next month near 42%. The street (13 analysts) rates it strong buy, with a mean price target of $119.
The framework reads markup. Price is trending higher with momentum. The crowd has caught on and buyers are in control. Price has moved down 0.0% since our last review. Ethical screening: PASS with passing ethical screen. The risk-adjusted return profile shows excellent risk-adjusted returns. Our composite framework grades it C, carrying a low risk profile. Technically it is holding around 20% above its long-term trend line with momentum reading neutral. Over the past year the shares are up 88%. Our forward projection puts the odds of a 10% gain over the next month near 42%. The street (13 analysts) rates it strong buy, with a mean price target of $119.
The framework reads markup. Price is trending higher with momentum. The crowd has caught on and buyers are in control. Price has moved down 0.0% since our last review. Ethical screening: PASS with passing ethical screen (70). The risk-adjusted return profile shows excellent risk-adjusted returns.
The framework reads markup. Price is trending higher with momentum. The crowd has caught on and buyers are in control. Ethical screening: PASS with passing ethical screen (70). The risk-adjusted return profile shows excellent risk-adjusted returns.
Each entry above was written on its date, before the outcome. A journal you can prune is not a journal.
- Protagonist (PTGX) Swings To A Profit As Two Drugs Near Blockbuster Status Insider Monkey · 29d ago
- MIMRYLO Approval Triggered $275M Payments for Protagonist (PTGX). Are Royalties the Better Commercial Model? Insider Monkey · 4 Sep 2026
- Protagonist Therapeutics (PTGX) Stock Could Be Overvalued Following FDA Approval News Simply Wall St. · 1 Sep 2026
- The Bull Case For Protagonist Therapeutics (PTGX) Could Change Following FDA Approval Of MIMRYLO And Takeda Milestones Simply Wall St. · 1 Sep 2026
- Protagonist Therapeutics (PTGX) Could Be 63% Below Fair Value After Investor Update Call Simply Wall St. · 1 Sep 2026
Headlines from third-party outlets, linked for reference: not our reporting, not advice.
Screened names in the same industry · explore each on its own page.
| Period | Price then | Price return | Divs per share | $1,000 became | Total return |
|---|---|---|---|---|---|
| 1 month | $103.50 | +2.4% | · | $1,024 | +2.4% |
| 2 months | $98.82 | +7.2% | · | $1,072 | +7.2% |
| 3 months | $95.42 | +11.1% | · | $1,111 | +11.1% |
| 6 months | $92.25 | +14.9% | · | $1,149 | +14.9% |
| 1 year | $56.37 | +88.0% | · | $1,880 | +88.0% |
| 2 years | $33.17 | +219.5% | · | $3,195 | +219.5% |
| 3 years | $29.09 | +264.3% | · | $3,643 | +264.3% |
| 5 years | $39.64 | +167.3% | · | $2,673 | +167.3% |
Historical returns from market close data. Past performance does not guarantee future results.
This entry now belongs to the ledger. Whatever PTGX does next, these words stay.
Thirteen thousand names carry this page. One desk keeps them honest.
Membership opens the full screen archive, the composites built from it, and the daily coverage that prices what the screen approves.
Join the deskScreening is research, not a fatwa and not financial advice. Figures are drawn from public accounts at the screen date shown. Always manage your risk.