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Aptinyx Inc. (APTX) Stock Analysis

Educational signal · not a buy or sell recommendation · How to read this

DELISTED 2023

What happened to Aptinyx Inc. (APTX) stock?

Aptinyx Inc. (APTX) no longer trades on public markets. It was delisted in December 2023. The figures below are historical and are not a current quote.

Vol: 231.1K| 52-wk range: $0.009 – $0.72

Beta 1.22: the stock has moved about 22% more than the S&P 500.

Data from FMP · Methodology

For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.0-flash, generated May 10, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR

Aptinyx Inc. (APTX). Aptinyx Inc. is a clinical-stage biopharmaceutical company focused on developing novel treatments for brain and nervous system disorders. Sector: Healthcare.

Last analyzed: May 10, 2026
Aptinyx Inc. is a clinical-stage biopharmaceutical company focused on developing novel treatments for brain and nervous system disorders. Their pipeline includes multiple Phase II clinical trials targeting conditions like diabetic neuropathy, fibromyalgia, PTSD, and Parkinson's disease.

Analyst Coverage for APTX: APTX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage. In the absence of analyst consensus, our AI model evaluates APTX against Healthcare peers across nine fundamental dimensions and assigns a neutral fundamental signal based on the underlying data.

Watch the APTX film Every key number, told as a short cinematic story — just press play. ~2 min
Council Score · Weighted Average of 3 Disciplines
Split View 49/100 · C

APTX: the 2 scored disciplines are evenly split. Dominant signal: Ken Griffin bearish.

How is this calculated? →
Legends Council · 5 Legends + Moon AI

AI simulations built from the named investors' published principles. Not affiliated with, endorsed by, or the opinion of these individuals. How these lenses are built

Dalio-style lens (simulated)Ray Dalio
Favorable read
Griffin-style lens (simulated)Ken Griffin
Unfavorable read
Simons-style lens (simulated)Jim Simons
Favorable read
Englander-style lens (simulated)Izzy Englander
Unfavorable read
Klarman-style lens (simulated)Seth Klarman
Neutral read
Moon AI lens (model)
Neutral read
Munger's Mindset · Balance Sheet & Valuation
Financial Health
Weak
Margin of Safety
Undervalued
Council Score · Weighted Average of 3 Disciplines · See tabs for details →
The lenses are modelled on the published principles of the investors named. We are not affiliated with them, they have not endorsed this, and it is not their opinion of this stock.

Aptinyx Inc. (APTX) Healthcare & Pipeline Overview

CEOCraig R. Jalbert CIRA
Employees12
HeadquartersEvanston, IL, US
IPO Year2018

Aptinyx Inc. is a clinical-stage biopharmaceutical firm specializing in novel small molecule therapeutics for brain and nervous system disorders. Their focus on N-methyl-D-aspartate receptor (NMDAr) modulators distinguishes them within the biotechnology sector, addressing unmet needs in conditions like fibromyalgia, PTSD, and Parkinson’s disease.

Data Provenance | Financial Data Quantitative Analysis Analysis: May 10, 2026

What Is the Investment Thesis for APTX?

AI-written as of May 10, 2026 — figures and tone reflect the data available then, not today's score.

Aptinyx presents a high-risk, high-reward investment profile typical of clinical-stage biopharmaceutical companies. The core value driver lies in the successful progression of its NMDAr modulator pipeline through clinical trials, particularly NYX-2925, NYX-783, and NYX-458. Positive Phase II results could trigger significant stock appreciation. Key catalysts include data readouts from ongoing Phase II trials for fibromyalgia and PTSD expected in late 2026. However, the company faces substantial risks related to clinical trial failures, regulatory hurdles, and the need for additional funding. The company's beta of 1.22 suggests higher volatility compared to the broader market.

Based on FMP financials and quantitative analysis

APTX Key Highlights

AI-written as of May 10, 2026 — figures and tone reflect the data available then, not today's score.

NYX-2925 is in Phase II clinical development for painful diabetic peripheral neuropathy.

  • NYX-2925 is also in Phase II/b clinical trial for treating fibromyalgia.
  • NYX-783, an NMDAr modulator, is in Phase II/b clinical trial to treat post-traumatic stress disorder.
  • NYX-458, an NMDAr modulator, is in Phase II clinical study for the treatment of Parkinson's disease cognitive impairment.
  • Aptinyx has a research collaboration agreement with Allergan plc.

Who Are APTX's Competitors?

APTX is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap MoonshotScore
ALKS Alkermes plc $46.11 +1.56% $7.74B 675-pillar
SAGE Sage Therapeutics, Inc. $8.68 0.00% $545M
VRTX Vertex Pharmaceuticals Incorporated $514.90 +0.07% $131B 965-pillar
NVO Novo Nordisk A/S $44.01 -1.23% $195B 925-pillar
REGN Regeneron Pharmaceuticals, Inc. $793.26 -1.78% $81.7B 945-pillar
ARGX argenx SE $984.04 -1.82% $61.2B 975-pillar
UCBJY UCB S.A. $117.06 -1.42% $44.6B 679-signal
ALNY Alnylam Pharmaceuticals, Inc. $247.51 -4.07% $33.1B 895-pillar

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance This table mixes two scoring engines — compare a number only with others carrying the same tag.

What Are APTX's Key Strengths?

Novel NMDAr modulator technology platform.

  • Pipeline of clinical-stage assets.
  • Research collaboration with Allergan (AbbVie).
  • Experienced management team.

What Are APTX's Weaknesses?

Clinical-stage company with no approved products.

  • High cash burn rate.
  • Dependence on successful clinical trial outcomes.
  • Small number of employees.

What Could Drive APTX Stock Higher?

Data readout from Phase II/b clinical trial of NYX-2925 in fibromyalgia (late 2026).

  • Data readout from Phase II/b clinical trial of NYX-783 in post-traumatic stress disorder (late 2026).
  • Progression of NYX-458 through Phase II clinical study for Parkinson's disease cognitive impairment.
  • Potential expansion of research collaboration with AbbVie.

What Are the Key Risks for APTX?

Financial-distress signal — its Altman Z-Score of -14.46 sits in the distress zone (elevated bankruptcy risk).

  • Negative return on equity (-97.5%) — the business is not currently generating profit on shareholder capital.
  • Weak fundamentals — a Piotroski F-Score of 1/9 flags soft profitability, leverage or efficiency.
  • Failure of NYX-2925 in Phase II clinical trials for painful diabetic peripheral neuropathy or fibromyalgia.
  • Failure of NYX-783 in Phase II/b clinical trial for post-traumatic stress disorder.
  • Regulatory delays or rejection of drug candidates by the FDA.
  • Need for additional funding to support clinical development programs.
  • Competition from other pharmaceutical companies developing treatments for brain and nervous system disorders.

What Are the Growth Opportunities for APTX?

  • Expansion of NYX-2925 into Additional Pain Indications: Beyond diabetic peripheral neuropathy and fibromyalgia, NYX-2925 could be explored for other chronic pain conditions. The global pain management market is projected to reach $91.4 billion by 2028, offering a substantial opportunity if NYX-2925 demonstrates broad efficacy and safety. This expansion would require further clinical trials and regulatory approvals, potentially extending the timeline to commercialization by 3-5 years.
  • Advancement of NYX-783 for Broader Psychiatric Applications: The success of NYX-783 in treating PTSD could pave the way for its investigation in other psychiatric disorders, such as anxiety and depression. The market for antidepressants and anti-anxiety medications is significant, estimated at $16 billion globally. Expanding the label for NYX-783 would necessitate additional clinical trials and regulatory submissions, potentially adding 4-6 years to the development timeline.
  • Out-Licensing or Partnership Agreements for Pipeline Assets: Aptinyx could pursue out-licensing or partnership agreements with larger pharmaceutical companies to accelerate the development and commercialization of its pipeline assets. This strategy would provide upfront funding, reduce development costs, and leverage the expertise of a larger organization. The timeline for such agreements is variable, but could potentially occur within the next 1-2 years.
  • Development of Novel NMDAr Modulators for Cognitive Impairment: Aptinyx can leverage its expertise in NMDAr modulation to develop new therapies for cognitive impairment associated with various neurological disorders, including Alzheimer's disease and mild cognitive impairment (MCI). The market for Alzheimer's disease treatments is projected to reach $13.7 billion by 2030. This would involve preclinical research, clinical trials, and regulatory approvals, potentially taking 5-7 years.
  • Expansion of Research Collaboration with Allergan (AbbVie): Aptinyx could expand its research collaboration with Allergan (now AbbVie) to explore new therapeutic targets and develop novel NMDAr modulators. This collaboration would provide access to additional funding, expertise, and resources. The timeline for expanding the collaboration is uncertain, but could potentially occur within the next 1-3 years.

What Opportunities Does APTX Have?

  • Expansion into new therapeutic areas.
  • Out-licensing or partnership agreements.
  • Positive clinical trial results.
  • Increasing prevalence of brain and nervous system disorders.

What Are APTX's Competitive Advantages?

  • Proprietary NMDAr modulator technology platform.
  • Pipeline of clinical-stage assets targeting unmet medical needs.
  • Intellectual property protection for its drug candidates.
  • Research collaboration with Allergan (AbbVie).

What Does APTX Do?

Aptinyx Inc. was founded in 2015 and is headquartered in Evanston, Illinois. The company is dedicated to the discovery, development, and commercialization of innovative treatments for challenging brain and nervous system disorders. Aptinyx focuses on developing novel, proprietary, and synthetic small molecules designed to modulate N-methyl-D-aspartate receptors (NMDAr). Their pipeline includes NYX-2925, currently in Phase II clinical development for painful diabetic peripheral neuropathy and Phase II/b for fibromyalgia. Additionally, NYX-783, another NMDAr modulator, is in Phase II/b clinical trials for post-traumatic stress disorder (PTSD). NYX-458, also an NMDAr modulator, is undergoing Phase II clinical study for Parkinson's disease cognitive impairment. Aptinyx operates through research and development, seeking to create value through clinical trial advancement and potential commercialization. The company also has a research collaboration agreement with Allergan plc, highlighting its collaborative approach to drug development.

What Products and Services Does APTX Offer?

  • Develop novel small molecule therapeutics for brain and nervous system disorders.
  • Focus on modulating N-methyl-D-aspartate receptors (NMDAr).
  • Conduct Phase II clinical trials for NYX-2925 in painful diabetic peripheral neuropathy.
  • Conduct Phase II/b clinical trials for NYX-2925 in fibromyalgia.
  • Conduct Phase II/b clinical trials for NYX-783 in post-traumatic stress disorder (PTSD).
  • Conduct Phase II clinical study for NYX-458 in Parkinson's disease cognitive impairment.

How Does APTX Make Money?

  • Discover and develop novel small molecule therapeutics.
  • Conduct preclinical and clinical trials to evaluate safety and efficacy.
  • Seek regulatory approval from the FDA and other agencies.
  • Potentially commercialize approved products directly or through partnerships.
  • Generate revenue through product sales, licensing agreements, and research collaborations.

What Industry Does APTX Operate In?

Aptinyx operates within the competitive biotechnology industry, which is characterized by high R&D spending, lengthy development timelines, and significant regulatory oversight. The market for treatments targeting brain and nervous system disorders is substantial, driven by an aging population and increasing prevalence of conditions like Alzheimer's, Parkinson's, and PTSD. Aptinyx's focus on NMDAr modulation places it among companies exploring novel mechanisms of action to address unmet needs in these therapeutic areas. Success depends on clinical trial outcomes and regulatory approvals.

Who Are APTX's Key Customers?

  • Patients suffering from brain and nervous system disorders.
  • Physicians who prescribe medications for these conditions.
  • Healthcare providers and hospitals.
  • Pharmaceutical companies through potential licensing agreements.
Model self-rating on this text: 71% (not a measure of the evidence) Updated: May 10, 2026

Research confidence

Low 0/100

Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.

  • Scoring coverage unknown
  • Price 30 days old
  • No filing on record
  • No analyst coverage
Net buying

Insider Activity

The most recent 12 insider filings for Aptinyx Inc. break down as 0 sales and 12 purchases. On net that is roughly 1.9M shares acquired (about $60K) — insiders putting money in tends to read as conviction.

ROE -97%

Key Financial Metrics

Return on equity for Aptinyx Inc. stands at -97.5%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is -97.2%, showing how much profit it generates from its asset base. A current ratio of 10.18 indicates the company holds enough short-term assets to cover its near-term obligations.

F-Score 1/9

Financial Health

Aptinyx Inc.'s Piotroski F-Score is 1/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny. Its Altman Z-Score of -14.46 places it in the distress zone, a signal of elevated financial risk.

5/6 beats

Earnings Track Record

Aptinyx Inc. has beaten Wall Street's EPS estimate in 5 of its last 6 reported quarters — a consistent record of delivering on expectations. Reported results have landed about 1.4% above estimates on average.

Company Profile

Aptinyx Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Evanston, US. The company is led by CEO Craig R. Jalbert CIRA. APTX has traded publicly since 2018.

APTX Financials

Fundamental Snapshot

Return on Equity (TTM)
-97.5%
Current Ratio
10.2
EV/EBITDA (TTM)
0.5

Based on FMP financials and quantitative analysis

Bull Case vs Bear Case

Bull Case

  • Novel NMDAr modulator technology platform.
  • Pipeline of clinical-stage assets.
  • Research collaboration with Allergan (AbbVie).
  • Experienced management team.

Bear Case

  • Clinical-stage company with no approved products.
  • High cash burn rate.
  • Dependence on successful clinical trial outcomes.
  • Small number of employees.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · May 2026

APTX Latest News

Leadership: Craig R. Jalbert CIRA

CEO

Craig R. Jalbert is the Chief Executive Officer of Aptinyx Inc. He brings extensive experience in the biopharmaceutical industry, with a focus on corporate strategy, business development, and financial management. His background includes various leadership roles in both public and private companies. Jalbert holds the CIRA designation, demonstrating his expertise in restructuring and insolvency. He is responsible for overseeing Aptinyx's overall operations and strategic direction.

Track Record: Since becoming CEO of Aptinyx, Craig R. Jalbert has focused on advancing the company's clinical pipeline and securing strategic partnerships. He has overseen the progression of NYX-2925, NYX-783, and NYX-458 through Phase II clinical trials. He also managed the company's research collaboration with Allergan plc, contributing to the development of novel NMDAr modulators.

Aptinyx Inc. Healthcare Stock: Key Questions Answered

What happened to Aptinyx Inc. (APTX) stock?

Aptinyx Inc. (APTX) no longer trades on public markets. It was delisted in December 2023. The figures below are historical and are not a current quote.

Can I still buy APTX shares?

No. APTX stopped trading on public markets in December 2023, so the shares are not available through a broker. Anything you see quoted for APTX elsewhere is historical data, not a live market.

Are the figures on this page current?

No. Every number here is the last value recorded before APTX stopped trading. Nothing on this page updates, and none of it is a current quote.

Why does this page still exist?

Because people still search for what happened to Aptinyx Inc.. An archived profile that states the delisting plainly is more useful than a dead link — provided it is labelled as history, which is what this page does.

What does Aptinyx Inc. do?

Aptinyx Inc. is a clinical-stage biopharmaceutical company focused on developing novel treatments for brain and nervous system disorders. The company's core technology revolves around modulating N-methyl-D-aspartate receptors (NMDAr) with small molecule therapeutics.

What do analysts say about APTX stock?

Analyst coverage of Aptinyx is limited, reflecting its status as a small-cap, clinical-stage biopharmaceutical company. Current valuations are primarily based on the potential of its pipeline assets, particularly NYX-2925 and NYX-783.

What are the main risks for APTX?

Aptinyx faces significant risks inherent to clinical-stage biopharmaceutical companies. The primary risk is the potential failure of its drug candidates in clinical trials, which could lead to a substantial decline in stock value. Regulatory hurdles and delays in obtaining FDA approval also pose a significant risk.

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Analysis updated
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • Information is based on publicly available sources and may be subject to change.
  • Clinical trial outcomes are inherently uncertain.
  • Investment in clinical-stage biopharmaceutical companies carries significant risk.
Data Sources
Financial Modeling Prep (FMP)Stock Expert AI proprietary analysis

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