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29 /100
COMPONENT-LIMITED
Score updated Oct 13, 2026

PTCT — PTC Therapeutics, Inc. Dilution Risk Tracker

Track PTCT dilution risk with DilutionWatch's stock tracker. DilutionScore™ measures dilution risk across 5 factors — lower scores indicate higher risk of share dilution.

⚠️ Not financial advice. Do your own research before making any investment decisions.

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As of October 13, 2026, PTC Therapeutics, Inc. (PTCT) has a DilutionWatch DilutionScore of 29/100, rated MEDIUM dilution risk. This is a component-limited score because one or more material inputs are unavailable or not applicable. PTC Therapeutics, Inc. has a market capitalization of $5.25B, 83.46M shares outstanding, 354 institutional holders tracked.

This page includes automatically generated factual summaries from DilutionWatch data. It is not financial advice, not investment research, and not a recommendation. Do your own research. Read the full disclaimer and terms of service.

Score Breakdown

📋 Offering Ability
40
💰Cash Runway—
📊Float Risk—
⚠️ Warrant Exposure
15
🔄 Convertible Debt
85

Dilution Forecast

⛈️
Warning
High probability of dilution event
model est. 30%
🔁 Convertible Conversion model 60%
• Major convertible overhang: 56% potential dilution
• Convertible risk score very high (85/100)
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Market Data

Market Cap$5.25B
Shares Outstanding83.46M
FloatN/A
Cash$2.23B
Debt$590.97M
Short InterestN/A

Source-Backed Evidence Depth

This public preview uses stored DilutionWatch fields and linked SEC/market records only. Missing values are not estimated.

FieldCurrent ValueBasis
DilutionScore29/100DilutionWatch score record
Shares Outstanding83.46MVerified float table or market cache
Public FloatNot availableVerified float table or market cache
Market Cap$5.25BMarket data cache
Cash RunwayNot applicable / unavailableDilutionWatch score inputs
Shelf CapacityNone in current score inputsSEC-derived dilution fields
ATM CapacityNone in current score inputsSEC-derived dilution fields
Outstanding WarrantsNone in current score inputsSEC-derived dilution fields

Recent source-backed SEC insight records available on this page: 1.

Recent SEC source mix: XBRL 1.

The page does not infer future share issuance, financing probability, cash needs, management intent, or price impact when source fields are absent.

Institutional Holdings

QoQ: ↑ 20.0% shares (2026Q1 vs prior)
354 institutional holders · 113.80M shares
#1 JANUS HENDERSON GROUP PLC 14.39M shares
#2 BlackRock, Inc. 12.95M shares
#3 RTW INVESTMENTS, LP 7.75M shares
+ 17 more holders Sign up free to view →

Institutional holder totals are aggregated from ownership filings and may use a different share basis or reporting date than public float. They are not a reconciliation against tradeable float.

Short Interest

Short Interest9.17M
Days to Cover6.1
% of FloatN/A
FINRA data as of Sep 30, 2026

Recent SEC Activity

xbrl XBRL CONVERTIBLE 2022-02-22
Full SEC filing analysis available with free account →

Recent News

No recent news available for this ticker.

Factual PTCT Dilution Snapshot

PTC Therapeutics, Inc. (PTCT) has a DilutionScore of 29/100, rated Medium dilution risk. Score date: October 13, 2026.

This automatically generated snapshot is assembled from stored DilutionWatch data fields and may contain data-source errors or omissions. It is not financial advice, not investment research, and not a recommendation. Do your own research and review the full disclaimer and terms of service.

DilutionScore History — Last 90 Days

PTCT's DilutionScore is currently 29/100 (Medium risk), with 2 score changes tracked over 89 days. The score improved from 16/100 (Low risk).

Period Score Risk Level Duration
Aug 22 – Oct 13, 202629/100MEDIUM53 days
Aug 14 – Aug 21, 202616/100LOW7 days
Jul 16 – Aug 13, 202623/100LOW29 days

Score recalculated daily from SEC filings and market data. Sign up free for real-time score change alerts.

Share Dilution History

PTCT shares outstanding have increased 0.2% from 82.77M (Mar 2026) to 82.95M (May 2026). Each increase represents potential dilution to existing shareholders.

Date Shares Outstanding Public Float Change
May 27, 202682.95M73.17M▲ 0.01%
May 11, 202682.95M73.16M▲ 0.08%
May 10, 202682.95M73.10M▲ 0.13%
Apr 26, 202682.91M73.00M▲ 0.02%
Apr 11, 202682.77M72.99M▲ 0.07%
Mar 26, 202682.77M72.94M▲ 0.04%

Share counts sourced from verified regulatory filings. Increases indicate dilution events.

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Score Coverage Note

More Research for PTCT
PTCT FDA Catalyst Timeline & Biotech Grade — BiotechSigns

Part of the Guerilla Finance research network. Cross-reference multiple data sources for better due diligence.