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PTC Therapeutics (PTCT): analysis traps
Where its figures could mislead a reader, and what to check before taking them at face value · Data: Q3 2026, to Sep 30, 2026, filed Oct 29, 2026; rules v1.1
PTC Therapeutics (PTCT): 1 rule of 10 triggered on the filings to Sep 30, 2026: stock compensation added back = no economic cost. 1 to review; 1 with insufficient data; 4 not applicable. Each is a question to verify, with the normal explanation that would produce the same figures.
Check these first
Stock compensation added back = no economic cost Triggered · severity medium · confidence high
Stock compensation was $75M, 4.3% of revenue, in FY2025; buybacks were $0 (0.0× the SBC) and the diluted share count still rose 14.9%. 'Adjusted' figures that add SBC back treat pay in shares as free; the cost is borne by every shareholder as dilution, or by the cash spent to buy the shares back.
Innocent reading: A young company paying in equity while it scales; intensity falls as revenue grows.
A precise DCF value = the true value To review · confidence high
The DCF's point value is 30.18 a share (price 65.44); 52% of it is the terminal value, a number about years no one has seen. Moving revenue growth (each year) by ±5 pts alone takes it from 28.04 to 32.78; across every method the research ran the range is -25 to 154. The value is a range; the decimals are not information.
Innocent reading: A stable, mature business with a narrow range of outcomes, where the point value is a fair summary.
Every rule
A01 FCF growth = the business improved Not triggered confidence medium
Free cash flow rose $817M to $702M; working capital and lower capex explain 0% of it, so most of the gain is in operating cash flow itself.
The figures and how they are read
| Fiscal year before | FY2024 |
| Fiscal year | FY2025 |
| Operating cash flow, year before | −$108M |
| Operating cash flow | $711M |
| Capex, year before | $7M |
| Capex | $9M |
| Free cash flow, year before | −$114M |
| Free cash flow | $702M |
| Change in FCF | $817M |
| Change in capex | $2M |
| Working capital: change in its cash contribution | −$141M |
| Of which: capex cut | 0.00 |
| Of which: working capital released | 0.00 |
| Share of the increase that need not repeat | +0.0% |
| Operating cash flow before working capital: change | 959486000.00 |
FCF = operating cash flow − cash capex; ΔFCF = ΔOCF − ΔCapEx; the working-capital part is the change in the cash-bridge items (receivables, inventory, payables, accruals), with the sign of the cash flow statement
Source: FY2025 (cash flow statement, fiscal year) · FY2024 (cash flow statement, fiscal year before)
A07 Stock compensation added back = no economic cost Triggered severity medium · confidence high
Stock compensation was $75M, 4.3% of revenue, in FY2025; buybacks were $0 (0.0× the SBC) and the diluted share count still rose 14.9%. 'Adjusted' figures that add SBC back treat pay in shares as free; the cost is borne by every shareholder as dilution, or by the cash spent to buy the shares back.
The figures and how they are read
| Fiscal year | FY2025 |
| Stock compensation | $75M |
| Revenue | $1.7B |
| SBC / revenue | +4.3% |
| Buybacks | 0 |
| Buybacks / SBC | 0.0 |
| Diluted shares, year before | 76.8M shares |
| Diluted shares | 88.3M shares |
| Diluted shares: change | +14.9% |
SBC / revenue from the cash flow statement's add-back; the diluted weighted share count year over year; buybacks from the financing section
Source: FY2025 (stock compensation, buybacks and the diluted share count, fiscal year)
What would explain it innocently
- A young company paying in equity while it scales; intensity falls as revenue grows
- Buybacks at prices below intrinsic value make up for the dilution over time
- A one-off grant (an acquisition, a founder award) rather than a steady level
What to look for in the filing
- The share count after the latest buybacks (the next 10-Q's cover)
- The price paid for the buybacks against the shares' value
- Unvested awards outstanding
What would show the trap does not apply
- The diluted share count falls over two years with buybacks at least equal to the stock compensation
- Stock compensation falls as a share of revenue in each of the next two years
Look again: next filing.
B02 Receivables growing = future cash is certain Not triggered confidence medium
Receivables grew 17% against revenue 70% in Q3 2026; DSO 61 against a median of 77: collections are keeping pace with sales.
The figures and how they are read
| Quarter | Q3 2026 |
| Revenue, year over year | +69.6% |
| Receivables, year over year | +17.2% |
| Quarter before | Q2 2026 |
| Revenue y/y, quarter before | +101.6% |
| Receivables y/y, quarter before | +21.9% |
| Days sales outstanding | 61.3 |
| DSO, median of eight quarters | 77.4 |
| Receivables | $238M |
| Revenue | $358M |
receivables and revenue against the same quarter a year earlier; DSO = receivables / quarterly revenue × days, against the median of the eight quarters before
Source: Q3 2026 (receivables and revenue) · Q3 2025 (the same quarter a year earlier)
B08 Adjusted profit = economic profit Insufficient data
no reconciliation table read from the releases yet and fewer than three quarters with both an adjusted and a GAAP EPS
C02 Low net debt = no refinancing risk Not triggered confidence medium
$55M comes due within a year, 38.4× covered by cash and investments of $2.1B plus $2M of free cash flow.
The figures and how they are read
| Cash and investments | $2.1B |
| Debt | $592M |
| Net debt | −$1.5B |
| Due within a year | $55M |
| Read from | the current portion of debt on the balance sheet |
| Free cash flow, twelve months | $2M |
| Cash plus free cash flow | $2.1B |
| Coverage of what is due | 38.4 |
| Due in the second year | — |
| Balance sheet date | 2026-09-30 |
due within a year from the maturity table (else the current portion of debt), against cash and investments plus free cash flow over the last twelve months (zero if negative); no credit lines assumed
Source: 2026-09-30 (debt maturities, cash and investments)
D03 EPS growth = profit growth Not applicable
a loss in one of the quarters: EPS growth has no meaning
E02 Low P/E at a cyclical peak = undervalued Not applicable
a loss on a trailing or mid-cycle basis: the P/E has no meaning
E07 A precise DCF value = the true value To review confidence high
The DCF's point value is 30.18 a share (price 65.44); 52% of it is the terminal value, a number about years no one has seen. Moving revenue growth (each year) by ±5 pts alone takes it from 28.04 to 32.78; across every method the research ran the range is -25 to 154. The value is a range; the decimals are not information.
The figures and how they are read
| dcf value | 30.18 |
| price | 65.44 |
| terminal value share | +52.4% |
| swing by input | Revenue growth (each year) / ±5 pts / 28.04 / 32.78; Operating margin / ±3 pts / 27.91 / 32.45; WACC / ±1 pt / 29.02 / 31.71; Tax rate / ±5 pts / 29.57 / 30.79 |
| range all methods | -24.86; 154.02 |
the DCF's point value against the share of it that is the terminal value and the value at each input moved by one step (growth ±5 pts, WACC ±1 pt, margin ±3 pts …); the range across every method the research ran
Source: 2026-11-08 (valuation research)
What would explain it innocently
- A stable, mature business with a narrow range of outcomes, where the point value is a fair summary
- The inputs that matter most are themselves well known (a regulated return, a long contract)
What to look for in the filing
- Which input you believe differs from the research's and why
- What the price implies for growth (the reverse DCF on the fair-value page)
What would show the trap does not apply
- The DCF's value is robust to the terminal growth and discount rate (the range's low end is still above the price)
- The company's cash flows over the next three years track the DCF's early years
Look again: next filing.
J06 A bank's low P/E and high profit = safe Not applicable
not a bank
J08 A REIT's low net income = the dividend is unsafe Not applicable
not a REIT
What the statuses mean
Triggered: the filings show the pattern; read the normal explanations and the missing evidence before concluding anything. To review: one quarter or a weak signal; a reader's judgement, not a pattern. Not triggered: the pattern is absent on these figures. Insufficient data: the filings read so far do not hold what the rule needs; this is not a clean bill. Not applicable: the rule is not meant for this kind of company (a bank's working capital, a loss-making quarter's EPS growth). Out of date: the latest filing is more than fifteen months old.
Severity is what the pattern could mean for cash, value or solvency; confidence is how reliable the inputs and the reading are. The two are kept apart.
Record a view
A reader's judgement, grounds, what would change it and the next review; kept in the browser (needs JavaScript).
Every rule and the companies it triggers on → PTC Therapeutics: cash flow →
Each rule reads the company's own filings by a fixed formula and says what would explain the same figures innocently. A triggered rule is a question to verify, not a finding of manipulation, and not a view on the stock. Missing data is shown as missing, never as clear. Not investment advice.