Daniel Herzog
Butterfly Market Insider
Hi, I’m Daniel.
My interest in economics, markets, and everything related pulled me deep into the world of finance a few years ago — especially into what the big hedge fund managers are actually doing.
What you’ll find here
On Butterfly Market Insider I share what I see: daily market commentary, Smart Money tracking from 13F filings and Form 4 data, deep dives on individual stocks and topics I find interesting. Just what I’d read myself.
Smart Money
13F filings and Form 4 data from the biggest hedge fund managers. What are they actually buying, what are they selling?
Market Commentary
Daily takes on what’s actually happening in the markets. Concrete numbers, honestly contextualized.
Deep Dives
In-depth analyses of individual stocks and topics. From multiple perspectives, with real data.
Methodology & data sources
Good analysis stands or falls with its data. Everything you read here is built on primary sources: official SEC 13F filings, quarterly reports and company fundamentals, plus live market data. I research every piece with care — and prices, ratios and key figures are updated automatically, so what you see reflects the current state of the market, not last month’s snapshot.
SEC 13F Data
The Smart Money Tracker follows 21 institutional fund managers based on their official 13F filings with the SEC — no rumors, no hearsay.
Company Numbers
Quarterly reports, earnings and key metrics straight from the companies themselves — the backbone of every stock and ETF analysis.
Fear & Greed Index
My own Fear & Greed Index condenses market sentiment into a single reading — a tool I built because I wanted it myself.
Editorial standards
Transparency matters to me more than anything else on this site. Analysis and opinion are clearly separated — when I share a personal take, I say so. When I get something wrong, I correct it as soon as I know about it. And above all: nothing here is investment advice. I don’t give individual recommendations, and every article is subject to the site’s disclaimer. Where links are affiliate links or content is promotional, it is labeled as such.
Analysis vs. Opinion
Data-driven analysis and personal takes stay separate. You always know which of the two you’re reading.
Corrections
Mistakes happen. When they do, I fix them as soon as they come to my attention — openly, not quietly.
No Investment Advice
Butterfly Market Insider is information and education, not advice. Affiliate links and ads are always disclosed as such.
One platform, five languages
What started as a personal project in Austria has grown over several years into a full platform, published daily in five languages: English, German, Spanish, Italian and French. Beyond the daily market commentary you’ll find stock and ETF analyses, a financial glossary, a stock screener, calculators for taxes, savings plans and retirement, the Smart Money Tracker and the Fear & Greed Index — everything I’d want in one place as an investor.
Analysis & Commentary
Market commentary every day plus in-depth stock and ETF analyses, published in all five languages.
Screener & Calculators
A stock screener, calculators for taxes, savings plans and retirement, and the Fear & Greed Index in real time.
Glossary
A financial glossary that explains the concepts in plain language — without unnecessary jargon.
Got questions?
Just write me. I usually respond within 24 hours.
Prefer a form? You can also reach me any time via the contact page here on the site.
— Daniel