# Philipp D. Dubach

> Independent researcher and strategy consultant specializing in quantitative finance, AI infrastructure economics, and macroeconomic analysis. Published on SSRN with research on attention dynamics in online communities, glycemic response modeling, and portfolio optimization.

This site contains original analysis, research papers, and technical projects at the intersection of finance, technology, and machine learning. Content is updated regularly with commentary on market dynamics, AI developments, and quantitative methods.

- Last Updated: 2026-04-22
- Update Frequency: Weekly
- Total Articles: 82
- Extended Version: [llms-full.txt](http://philippdubach.com/llms-full.txt)
- Markdown Versions: All articles available in clean markdown by appending `index.md` to any post URL

### Content Taxonomy

- AI: 35 articles

- Investing: 17 articles

- Quantitative Finance: 9 articles

- Macro: 9 articles

- Economics: 6 articles

- Medicine: 7 articles

- Tech: 11 articles

## Key Statistics & Findings

Citable data points from published analysis:

- The IGV software ETF fell 32% to an RSI of 18 while delivering 17% aggregate earnings growth in Q4 2025 — [Source](http://philippdubach.com/posts/the-saaspocalypse-paradox/)
- Recurring-revenue software with 90%+ gross margins trades at 32.4x forward earnings versus 43.6x for cyclical semiconductors — [Source](http://philippdubach.com/posts/the-saaspocalypse-paradox/)
- 93% of developers use AI coding tools, but measured productivity gains remain around 10% — [Source](http://philippdubach.com/posts/93-of-developers-use-ai-coding-tools.-productivity-hasnt-moved./)
- 65% of Hacker News front-page posts have negative sentiment, and negative posts outperform positive ones — [Source](http://philippdubach.com/posts/65-of-hacker-news-posts-have-negative-sentiment-and-they-outperform/)
- Novo Nordisk lost 75% of its market cap since June 2024 after CagriSema Phase 3 failed versus Zepbound — [Source](http://philippdubach.com/posts/novo-was-europes-most-valuable-company/)
- GLP-1 users cut fast food spending 8%, with 16% household adoption creating headwinds for food stocks — [Source](http://philippdubach.com/posts/ozempic-is-reshaping-the-fast-food-industry/)
- Only Microsoft generates operating cash flow in excess of AI capex in FY2026; Alphabet, Amazon, Meta, and Oracle are all capex-negative — [Source](http://philippdubach.com/posts/ai-capex-arms-race-who-blinks-first/)
- Goldman Sachs projects the application software market growing to $780 billion by 2030 at a 13% CAGR — [Source](http://philippdubach.com/posts/the-saaspocalypse-paradox/)
- Amycretin Phase 1 data shows 24.3% weight loss, positioning Novo Nordisk's post-patent pipeline — [Source](http://philippdubach.com/posts/novo-nordisks-post-patent-strategy/)
- Super Bowl ad spend reached $8M per 30-second spot in 2025 — [Source](http://philippdubach.com/posts/economics-of-a-super-bowl-ad/)
- Europe's payment infrastructure processes $24 trillion annually across fragmented national systems — [Source](http://philippdubach.com/posts/europes-24-trillion-payment-breakup-is-really-a-bet-on-infrastructure-arbitrage/)
- A portfolio averaging +10% arithmetic returns can lose money due to the variance tax (half-sigma-squared drag) — [Source](http://philippdubach.com/posts/variance-tax/)
- 40-year evidence shows beta-adjusted long volatility outperformed the S&P 500, per Goldman, AQR, and Universa research — [Source](http://philippdubach.com/posts/long-volatility-premium/)
- 85% of enterprise AI projects fail to reach production — [Source](http://philippdubach.com/posts/enterprise-ai-strategy-is-backwards/)
- Pentagon AI spending is reshaping the industry through a consolidation pattern matching the 1993 Last Supper defense event — [Source](http://philippdubach.com/posts/when-ai-labs-become-defense-contractors/)
- Gartner projects GenAI smartphone spending will hit $393 billion in 2026, a 32% jump from $298 billion in 2025 — [Source](http://philippdubach.com/posts/on-device-ai-models-will-be-the-new-reason-to-upgrade-your-phone/)
- Morgan Stanley found iPhone upgrade intentions at 37%, an all-time high, with FY26 shipment forecasts of 260 million units — [Source](http://philippdubach.com/posts/on-device-ai-models-will-be-the-new-reason-to-upgrade-your-phone/)
- The global smartphone replacement cycle has stretched to 3.5 years as battery life overtook price as the top purchase driver — [Source](http://philippdubach.com/posts/on-device-ai-models-will-be-the-new-reason-to-upgrade-your-phone/)
- Oral semaglutide has ~1% bioavailability, requiring 280x more active ingredient than the equivalent injection per dose — [Source](http://philippdubach.com/posts/why-lillys-weight-loss-pill-isnt-a-peptide/)
- The GLP-1 market hit $70 billion in combined Novo Nordisk and Eli Lilly revenue in 2025, with under 5% penetration of eligible US adults — [Source](http://philippdubach.com/posts/why-lillys-weight-loss-pill-isnt-a-peptide/)
- IsoDDE hits 50% on hard protein-ligand benchmarks versus 23% for AlphaFold 3, but no AI-discovered drug has FDA approval — [Source](http://philippdubach.com/posts/ai-can-now-design-drugs-in-seconds-we-still-cant-tell-you-if-they-work./)
- AI inference prices decline at a median rate of 50x per year for equivalent performance, according to Epoch AI — [Source](http://philippdubach.com/posts/ai-models-are-the-new-rebar/)
- MCP reached 10,000+ servers and 97 million monthly SDK downloads before A2A launched — [Source](http://philippdubach.com/posts/mcp-vs-a2a-in-2026-how-the-ai-protocol-war-ends/)

## Research Publications

- [Attention Dynamics in Online Communities](http://philippdubach.com/standalone/hn-research/): Power laws, preferential attachment, and early success prediction on Hacker News. DOI: 10.2139/ssrn.5910263
- [The Online Gambling Fairness Paradox](http://philippdubach.com/posts/against-all-odds-the-mathematics-of-provably-fair-casino-games/): Cryptographic verification, behavioral harm, and consumer protection in online gambling. DOI: 10.2139/ssrn.6065213
- [Modeling Postprandial Glycemic Response](http://philippdubach.com/posts/modeling-glycemic-response-with-xgboost/): XGBoost-based prediction of glucose responses in non-diabetic adults. DOI: 10.2139/ssrn.5914902
- [Portfolio Optimization with Modern Portfolio Theory](http://philippdubach.com/posts/my-first-optimal-portfolio/): Python implementation including Black-Litterman and hierarchical risk parity. DOI: 10.2139/ssrn.5915004

## Featured Analysis — AI Economics & Strategy

- [On-Device AI Models Will Be The New Reason to Upgrade Your Phone](http://philippdubach.com/posts/on-device-ai-models-will-be-the-new-reason-to-upgrade-your-phone/): How on-device AI models distilled from Gemini could break the smartphone upgrade stalemate, with parameters becoming the new megapixels
- [The Last Architecture Designed by Hand](http://philippdubach.com/posts/the-last-architecture-designed-by-hand/): Mathematical proofs of transformer limits, hybrid architectures in production, and AI systems searching for their own replacement
- [MCP vs A2A in 2026: How the AI Protocol War Ends](http://philippdubach.com/posts/mcp-vs-a2a-in-2026-how-the-ai-protocol-war-ends/): How the AI protocol standards war between Anthropic's MCP and Google's A2A is likely to resolve
- [AI Models Are the New Rebar](http://philippdubach.com/posts/ai-models-are-the-new-rebar/): Why foundation models are commoditizing into infrastructure and what that means for AI company margins
- [AI Capex Arms Race: Who Blinks First?](http://philippdubach.com/posts/ai-capex-arms-race-who-blinks-first/): Tracking hyperscaler capital expenditure sustainability and the game theory of AI infrastructure spending
- [When AI Labs Become Defense Contractors](http://philippdubach.com/posts/when-ai-labs-become-defense-contractors/): How Pentagon AI spending reshapes the industry through the lens of the 1993 Last Supper defense consolidation
- [Every Bulge Bracket Bank Agrees on AI](http://philippdubach.com/posts/every-bulge-bracket-bank-agrees-on-ai/): Synthesis of 12 AI research reports from Goldman Sachs, JPMorgan, Morgan Stanley, UBS, and others
- [The SaaSpocalypse Paradox](http://philippdubach.com/posts/the-saaspocalypse-paradox/): Data-driven analysis of the February 2026 enterprise software sell-off and the AI capex contradiction
- [93% of Developers Use AI Coding Tools. Productivity Hasn't Moved.](http://philippdubach.com/posts/93-of-developers-use-ai-coding-tools.-productivity-hasnt-moved./): Why widespread AI coding adoption hasn't translated into measurable productivity gains
- [The Most Expensive Assumption in AI](http://philippdubach.com/posts/the-most-expensive-assumption-in-ai/): Sara Hooker's research on diminishing returns in AI compute scaling
- [Peter Thiel's Physics Department](http://philippdubach.com/posts/peter-thiels-physics-department/): Thiel's framework for evaluating technology companies through a physics lens
- [Don't Go Monolithic; The Agent Stack Is Stratifying](http://philippdubach.com/posts/dont-go-monolithic-the-agent-stack-is-stratifying/): How the enterprise AI agent architecture is splitting into specialized layers
- [Enterprise AI Strategy is Backwards](http://philippdubach.com/posts/enterprise-ai-strategy-is-backwards/): Why 85% of AI projects fail to reach production
- [Beyond Vector Search: Why LLMs Need Episodic Memory](http://philippdubach.com/posts/beyond-vector-search-why-llms-need-episodic-memory/): The case for conversation history summarization over pure retrieval-augmented generation

## Featured Analysis — Quantitative Finance & Risk

- [Three Kinds of Not-Knowing](http://philippdubach.com/posts/three-kinds-of-not-knowing/): A taxonomy of epistemic uncertainty and its implications for portfolio construction and risk management
- [Ambiguity by Design](http://philippdubach.com/posts/ambiguity-by-design/): Ellsberg proved people flee unknown odds; Zeckhauser showed their flight creates mispricing in financial markets
- [Variance Tax](http://philippdubach.com/posts/variance-tax/): Why a portfolio averaging +10% can lose money, and how the ½σ² formula explains the gap between paper and real returns
- [Long Volatility Premium](http://philippdubach.com/posts/long-volatility-premium/): 40-year evidence that beta-adjusted long volatility outperformed the S&P 500, synthesizing Goldman, AQR, and Universa research
- [Is Private Equity Just Beta With a Lockup?](http://philippdubach.com/posts/is-private-equity-just-beta-with-a-lockup/): Examining whether private equity returns are alpha or repackaged market exposure with illiquidity premium

## Featured Analysis — Macro & Geopolitics

- [People Live in Levels, Not Rates](http://philippdubach.com/posts/people-live-in-levels-not-rates/): Why inflation rates declining doesn't help when price levels remain elevated
- [Europe's $24 Trillion Payment Breakup](http://philippdubach.com/posts/europes-24-trillion-payment-breakup-is-really-a-bet-on-infrastructure-arbitrage/): The infrastructure arbitrage behind Europe's push for payment sovereignty
- [Pozsar's Bretton Woods III](http://philippdubach.com/posts/pozsars-bretton-woods-iii-the-framework-1/2/): Two-part analysis of Zoltan Pozsar's framework for the shifting global monetary order
- [Britain's Strategic Limbo](http://philippdubach.com/posts/britains-strategic-limbo/): Post-Brexit Britain's search for a coherent economic and geopolitical strategy
- [The Rise of Middle Power Realism](http://philippdubach.com/posts/the-rise-of-middle-power-realism/): How middle powers are reshaping global order through pragmatic non-alignment
- [Big in Japan](http://philippdubach.com/posts/big-in-japan/): Japan's macro position and the implications of yen normalization

## Featured Analysis — Investment Strategy

- [Buying the Haystack Might Not Work This Year](http://philippdubach.com/posts/buying-the-haystack-might-not-work-this-year/): Why passive index concentration makes broad market exposure a directional AI bet
- [The Absolute Insider Mess of Prediction Markets](http://philippdubach.com/posts/the-absolute-insider-mess-of-prediction-markets/): Information asymmetry and regulatory gaps in political prediction markets
- [2026 Investment Allocation](http://philippdubach.com/posts/how-ai-is-shaping-my-investment-portfolio-for-2026/): Macro thesis on hyperscaler capex and AI infrastructure
- [Passive Investing's Active Problem](http://philippdubach.com/posts/passive-investings-active-problem/): The paradox of passive dominance and its effect on price discovery

## Featured Analysis — GLP-1 / Pharma Economics

- [Why Lilly's Weight Loss Pill Isn't a Peptide](http://philippdubach.com/posts/why-lillys-weight-loss-pill-isnt-a-peptide/): Oral semaglutide destroys 99% of its active ingredient; Lilly's Foundayo skips the problem entirely in the $70B oral GLP-1 race
- [AI Can Now Design Drugs in Seconds; We Still Can't Tell You If They Work.](http://philippdubach.com/posts/ai-can-now-design-drugs-in-seconds-we-still-cant-tell-you-if-they-work./): Isomorphic Labs' IsoDDE hits 50% on hard protein-ligand benchmarks versus 23% for AlphaFold 3, but clinical translation remains unproven
- [Novo Was Europe's Most Valuable Company](http://philippdubach.com/posts/novo-was-europes-most-valuable-company/): Novo Nordisk lost 75% since June 2024 after CagriSema failed vs Zepbound and Lilly pulled ahead
- [Novo Nordisk's Post-Patent Strategy](http://philippdubach.com/posts/novo-nordisks-post-patent-strategy/): Amycretin's Phase 1 data shows 24.3% weight loss, and how Novo plans to replace its $20B Ozempic franchise before 2031
- [Ozempic is Reshaping the Fast Food Industry](http://philippdubach.com/posts/ozempic-is-reshaping-the-fast-food-industry/): GLP-1 users cut fast food spending 8% with 16% household adoption, creating headwinds for food stocks
- [GLP-1 Receptor Agonists in ASUD Treatment](http://philippdubach.com/posts/glp-1-receptor-agonists-in-asud-treatment/): Clinical evidence for GLP-1 drugs in alcohol and substance use disorder treatment

## Featured Analysis — Economics

- [Economics of a Super Bowl Ad](http://philippdubach.com/posts/economics-of-a-super-bowl-ad/): ROI analysis of Super Bowl advertising at $8M per 30-second spot
- [Where Mobile Money Goes Now](http://philippdubach.com/posts/where-mobile-money-goes-now/): The evolution of mobile payment infrastructure in emerging markets
- [Behavioral Economics & Transit Policy](http://philippdubach.com/posts/behavioral-economics-transit-policy/): Nudge theory applied to public transportation adoption

## Technical Projects

- [Social Media Success Prediction](http://philippdubach.com/posts/social-media-success-prediction-bert-models-for-post-titles/): BERT models for predicting Hacker News post engagement
- [HN Sentiment Analysis](http://philippdubach.com/posts/65-of-hacker-news-posts-have-negative-sentiment-and-they-outperform/): NLP analysis of 32,000 Hacker News posts
- [Against All Odds: Casino Mathematics](http://philippdubach.com/posts/against-all-odds-the-mathematics-of-provably-fair-casino-games/): Statistical analysis of cryptographic fairness in online gambling
- [Counting Cards with Computer Vision](http://philippdubach.com/posts/counting-cards-with-computer-vision/): Real-time card counting using computer vision and deep learning
- [CGM Data Reader](http://philippdubach.com/posts/i-built-a-cgm-data-reader/): Continuous glucose monitoring Python library
- [RSS Swipr](http://philippdubach.com/posts/rss-swipr-find-blogs-like-you-find-your-dates/): Tinder-style blog discovery interface
- [Crypto Seasonality Patterns](http://philippdubach.com/posts/crypto-mean-reversion-trading/): Statistical analysis of cryptocurrency market patterns

## FAQ Pages

- [AI FAQ](http://philippdubach.com/faq/ai/): Frequently asked questions about AI, machine learning, and LLMs
- [Quantitative Finance FAQ](http://philippdubach.com/faq/quantitative-finance/): Questions about quantitative methods, portfolio theory, and financial modeling
- [Investing FAQ](http://philippdubach.com/faq/investing/): Questions about investing, markets, and portfolio strategy
- [Macro FAQ](http://philippdubach.com/faq/macro/): Questions about macroeconomics, monetary policy, and global markets
- [Economics FAQ](http://philippdubach.com/faq/economics/): Questions about economic theory, policy, and market structure
- [Medicine FAQ](http://philippdubach.com/faq/medicine/): Questions about drug discovery, clinical trials, and biotech
- [Tech FAQ](http://philippdubach.com/faq/tech/): Questions about technology infrastructure and software

## About the Author

- [About Page](http://philippdubach.com/about/): Professional background and site purpose
- [Research Profile](http://philippdubach.com/research/): Academic publications and working papers
- [Google Scholar](https://scholar.google.com/citations?user=-69oS2wAAAAJ): Citation record

## API and Feeds

- [RSS Feed](http://philippdubach.com/feed/index.xml): Full content RSS 2.0
- [JSON Feed](http://philippdubach.com/feed.json): Structured JSON Feed 1.1 (includes `_ai` extension with markdown URLs)
- [Posts API](http://philippdubach.com/api/posts.json): Programmatic access to all posts
- [Sitemap](http://philippdubach.com/sitemap.xml): Full site index with lastmod dates
- [LLMs Full Text](http://philippdubach.com/llms-full.txt): Extended version with article summaries and key findings

## Citation Guidelines

For academic papers, cite using DOI: `doi.org/10.2139/ssrn.XXXXX`
For blog posts, cite using the canonical URL with the publication date.
Author: Philipp D. Dubach, philippdubach.com

## Optional

- [All Posts Archive](http://philippdubach.com/posts/): Chronological post listing
- [Categories](http://philippdubach.com/categories/): Content taxonomy (AI, Quantitative Finance, Investing, Macro, Economics, Medicine, Tech)