What is Stockopine about? 📧
StockOpine focuses on deep research of high-quality businesses. We study business models, industry position, financial strength, and valuation to identify companies with the durability to compound returns over time.
We invest the time, so you can save hours.
Our Investing Approach 📊
Long-term, bottom-up philosophy
Focus on companies with clear competitive advantages
Evidence-based selection using fundamental analysis
Only initiate a position when quality + price align
As Warren Buffet said, “If a business does well, the stock eventually follows.”
What will you get as a premium subscriber? 💰
a. Research
🚀 Deep Dives: In-depth analysis of high-quality companies, covering their business models, financials, industry landscape, and valuation.
⚖️ Full Valuation Models: Access to our complete valuation model for each company we analyze (starting December 2025).
💲 Valuation Updates: Regular valuation updates on portfolio holdings and stocks from our coverage universe.
📈 Earnings Analysis: Key insights and takeaways from recent earnings announcements for all portfolio stocks.
📑 Investment Thesis Memos: Access our detailed investment thesis for every new position, providing valuable insights into our strategy.
b. Portfolio Coverage
✨ Total Transparency: We communicate every move before we make it. You can also view our portfolio live on eToro (handle: AdamosH).
📰 Regular Portfolio News: Continuous insights and updates on the companies in our portfolio.
📊 Quarterly Portfolio Reviews: A comprehensive performance overview and the rationale behind every transaction for the quarter.
c. Community & Extras
✍️ Premium Members’ Chat: Direct access to our exclusive subscriber-only chat community.
💰 Koyfin Bonus: A 3-MONTH FREE TRIAL for Koyfin Premium (applicable to annual plans).
Pricing
Our research provides in-depth company analysis, portfolio updates, exclusive access to a members' chat and more —all for just $150 per year or $17.50 per month.
Still unsure? There's a reason why our newsletter was featured as a top Substack publication in 2024. 🎉
What readers say…
"Detailed research on quality companies and compounders." - Tech Investments
"Team at StockOpine provide with great deep research into companies that are actually worth reading and researching…." - From $100k to $1m
“StockOpine's newsletter provides in-depth analyses of high-quality stocks. They do the extensive research, so you can confidently invest in their top stock picks.” Panic Drop
“A CFA Charterholder whom I've seen present several times. Puts thought into his ideas and has passion.” Fatalpha
Live Portfolio
For Our European Audience (via eToro)
If you’re based in Europe, you can follow our live holdings on eToro (AdamosH). Signing up through our link gives you real-time visibility.
View our portfolio on eToro using the handle ‘AdamosH’
In full transparency, we earn a commission if you sign up through our affiliate link, and we may also receive fees from eToro if you use their copy trading feature to copy our portfolio (see risk warnings below).
About the authors
StockOpine is run by two investors in our mid-30s with deep experience in financial services and asset management. We began our careers at Big Four firms, working across audit, corporate finance, valuations, and financial modeling. Over the years, we’ve analyzed hundreds of financial statements, built models, and made decisions with real financial impact.
Our combined background gives us an edge in fundamental research. One of us holds the ACCA qualification, and the other holds the ACA, CFA, and ACSI. We apply this experience to identify high-quality businesses and produce detailed, practical research for long-term investors.
If you’d like to learn more, you can read the interview with our co-founder Adamos Hadjiantoniou.
You can reach us on Twitter @StockOpine.
Research Tools - Affiliate partnerships
Financial analysis
Koyfin → 20% discount for StockOpine readers if you use the affiliate link | We personally use Koyfin on a daily basis to screen for stocks, extract financial data and ratios, read earnings transcripts and run peer comparisons.
Fiscal.ai → 15% discount for StockOpine readers if you use the affiliate link | Our go-to platform when we need granular information to analyze a company. Quick and easy access to KPIs.
Reduced-rate subscription choices
👩🎓👨🎓 If you are a student at an accredited institution, you can get 50% off forever!
Loyalty referral program
🎁 Unlock free complimentary subscription by referring StockOpine’s Newsletter: See your place on the Leaderboard.
Disclaimer: The team does not guarantee the accuracy or completeness of the information provided in the newsletter. All statements express personal opinions based on own financial and business analysis. Any estimates or forward looking statements made are inherently unreliable. No statement of opinion is an offer or solicitation to buy or sell the financial instruments mentioned.
The content of our newsletter is not a trading or investment advice and we do not provide any personal investment advice tailored to the needs of any recipient. The information provided should not be considered as a specific advice on the merits of any investment decision. Securities trading involve risk and you might lose your capital and/or incur other damages. Investors should make their own research and consult their registered investment advisor or financial advisor before taking any investment decision.
Neither the team nor any of its affiliates accept any liability whatsoever for any direct or indirect loss however arising, from any use of the information contained herein. Any unauthorized copy of this newsletter or its contents is illegal.
Our posts may contain affiliate links, which means that we might get a commission if you decide to sign-up using any of these links. No extra cost is charged to you.
By subscribing / reading our newsletter or any affiliated social media accounts, you indicate your unconditional acceptance to the above and your unconditional acceptance to our terms and conditions.
eToro Risk Warnings:
eToro is a multi-asset investment platform. The value of your investments may go up or down.
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 46% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
Crypto investments are risky and may not suit retail investors; you could lose your entire investment. Understand the risks here https://etoro.tw/3PI44nZ.
Copy Trading does not amount to investment advice. Your investments value may go up or down.
Your capital is at risk.
Not available for users in the USA.
