Pillow Investment Method: An AI stock auto-trading machine that makes money while you sleep
Revolutionize your stock investing with AI! In this course, you’ll build a fully functional AI automated trading system that targets the top 25 Nasdaq stocks. Gain experience and know-how through paper trading with the Korea Investment & Securities API, and take advantage of this special opportunity to conduct AI-powered automated stock trading with a real account. Even if you’re a complete beginner, there’s no problem. We’ll explain the basic concepts of stocks and why you should invest in U.S. stocks in an easy-to-understand way, and provide all source code along with remote support. From now on, investing is essential for the next 60 years of our lives. Build your own AI investment partner to accompany you!
The core concepts and theories of stocks are summarized so well that I can learn them quickly. It's great to be able to see the actual creation process in detail. I'm going to go finish the rest of the course!
What you will gain after the course
Automated Trading System Development Capabilities
Understanding and Applying AI Prediction Models
The ability to evaluate stocks from a supply-and-demand (short-selling balance) perspective
Data Collection and Preprocessing
Maximizing Programming Development Efficiency Using AI
🔥 Update (2026.10.20): Notice on the News Sentiment API Becoming Paid and Alternative Solutions 🔥
✅ The news sentiment analysis API has become paid (3 lessons added after Lesson 17, free for existing students)
The Alpha Vantage news sentiment API used in Lesson 21 became paid-only starting October 7, 2026. You do not need to make any payment. After measuring it directly using two years of data across 25 stocks, we found that news sentiment scores did not help predict returns. Even without the sentiment scores, data collection, AI predictions, technical indicators, and buy/sell logic continue to work as before. The newly added Lessons 18–20 explain what has changed and what you need to do.
✅ We look at “fund flows” instead of the news (FINRA short interest, free—no API key required)
Just as the Korean market looks at foreign and institutional trading flows, the U.S. market reads professional investors’ positions through FINRA short interest (days-to-cover). It was the only one among 22 free candidates to pass validation. The top five stocks with the lowest short interest outperformed the bottom five by +3.2%p. Lesson 18 covers the background, Lesson 19 covers the design rationale and score calculation, and Lesson 20 covers the code integration and application process. (In the basic course code, apply it directly using an AI prompt as instructed in Lesson 18)
We replaced the news sentiment API, which became paid, with free data (FINRA short interest) to maintain a "zero-cost" setup. We added this for free for existing students, while offering a discount for only two weeks to those just starting.
The course you're viewing now 30% (99,000 won → 69,300 won)
The Secret of Algorithmic Trading 30%(47,300 won → 33,110 won)
Roadmap bundle of 4 courses 50% (including the Korean Stocks course; get the coupon on the Roadmap page)
🚨You can build it without knowing how to program! 💲From setup to operation and maintenance at zero cost!
🚀 An opportunity to revolutionize your investments! A course on building an AI stock auto-trading system
How are you preparing for the future? If you're unsure how to prepare for your future, this course could be a turning point for you. This course teaches you how to build your own AI-powered automated stock trading system.
It will be your own system, unlike anything offered by any stock trading app, allowing you to predict for yourself when and how much each stock will rise and make investments with a high probability of gains.
You can build a fully functional automated trading system exactly the way you want.
It provides an amazing experience by automating buying and selling through AI predictions combined with technical indicators, targeting the top 25 Nasdaq stocks.
AI invests for you even while you sleep.
Summary
- We explain the basic concepts of stocks.
- You don't need to have ever traded stocks before.
- It doesn't matter if you don't know how to program.
(Because these days, there aren't many developers who write code themselves anyway..)
- We explain why you should invest in U.S. stocks.
- There isn't a single penny of cost from setup through operation and maintenance!
Don't know much about stocks? Don't worry! You don't need to know much about stocks. This course kindly explains the basic terms and concepts of stocks from the ground up, so you don't have to feel overwhelmed. You can comfortably take the course with the mindset of starting from scratch. It also clearly explains why you should invest in U.S. stocks, along with their importance and advantages. Discover the appeal of U.S. stocks, the center of the global market, and seize the opportunity for greater returns and portfolio diversification!
Simply knowing why you should invest in U.S. stocks can change your life in the long run!!
🎯 This course was made for you!
For those passionate about stock investing: If you're tired of repetitive trading, automate your ideas!
For those dreaming of bringing AI and finance together: Whether you're a developer or a trader, this is a must if you want to conquer the stock market with technology!
For those who want to build an automated trading system: If you want to implement your own investment logic through coding, now is your chance!
Data Science Master: Level up your skills through hands-on projects—from data collection and analysis to prediction!
Existing Inflearn students: If you have taken "The Secret of Algorithmic Trading: How AI Predicts Stock Prices," this is the next step!
Stock beginners: Those who want to learn from the basics of stocks (basic stock concepts)
💡 What will you learn in this course?
We thoroughly explore the process of building a complete automated trading system based on the top 25 Nasdaq stocks.
Data Preparation & DB Design: Collect real-time data using the Fred and Yahoo Finance APIs, and store it neatly in PostgreSQL!
AI prediction model: Identify buying targets using the probability of a stock price increase (Rise Probability) and accuracy (Accuracy).
Technical indicators: Use RSI, moving averages (SMA), MACD, and more to identify golden crosses and death crosses!
News sentiment analysis: Learn the principles, but exclude it from the trading score due to API monetization (guidance in lessons 18–20)
Korea Investment & Securities API integration: Connect to an overseas stock account and write code to automatically execute buy and sell orders.
Trading logic: Design powerful buy/sell strategies that combine AI and technical indicators, with take-profit/stop-loss risk management!
Tags: Python, deep learning, data engineering, FastAPI, big data, machine learning, Database, API integration, algorithmic trading, securities API (Korea Investment & Securities), backtesting, no-code automated trading, stock market beginners, paper trading
🎁 Why is this course special?
A system that actually works: This isn’t a course that only talks about theory. You will complete a system that you can run yourself!
All source code provided:
No need to worry about complex coding or taking notes! We provide all the code used in the course. Once you understand it, you’re done!
Support: “I’ve tried everything, but it still doesn’t work ㅠㅠ” -> Don’t worry. If you get stuck, leave a question anytime, and we’ll support you until it’s resolved. (Question Guide: Exact course title, timeline, and specific questions)
Practice safely with simulated investing: Test with Korea Investment & Securities' paper trading without worrying about losing real money!
End-to-end experience: Systematically master the entire process, from data collection to trade execution!
🛠 What do you need to prepare?
Python: Even beginners can follow along easily.
Korea Investment & Securities overseas stock account: An essential for real-world trading!
Fred, Yahoo Finance API: Secure data with a free sign-up! (Alpha Vantage is no longer needed as it will become paid in 2026.10)
DB: PostgreSQL (I'll explain how to use the database for free in the course)
No Money: You can build your own automated stock trading system without maintenance costs.
Recommended for people like these
I want to easily develop anything using AI.
From design and implementation to operations, we openly show you how to build across the entire IT spectrum using AI.
I want to understand and build AI prediction models.
We’ll show you how to leverage actual Raw Data.
I’ll show you how to extract insights from the data collected.
I want to apply IT to economics and stocks to build a business.
I’ll show you how to use economic indicators and technical indicators to build a business.
By the time you complete this course, you will have built your own system and be able to operate it yourself.
You’ll learn the following.
Stock theory
Don’t worry if you’re new to stock investing! We’ll explain the basic concepts and terminology of stocks step by step, and you’ll learn practical investment strategies based on the top 25 Nasdaq stocks. This course covers stock market theory that even beginners can easily understand.
Data Collection
Learn how to collect economic indicators and stock price data using the Fred and Yahoo Finance APIs for real-time stock price data and economic indicators. You will learn how to store data cleanly in PostgreSQL and prepare data for AI prediction models and technical indicator calculations.
AI prediction models
Design a model that predicts the probability and accuracy of stock price increases using AI. Select buying targets based on Rise Probability and Accuracy, and combine technical indicators (RSI, MACD, etc.) to create a system with stronger predictive power.
AI Code Writing
Using AI, you’ll create stock automated trading system code through vibe coding without writing a single line of code. You’ll integrate the Korea Investment & Securities API to automate buy and sell orders and learn efficient code for processing real-time data. With the completed source code provided, there’s no need to waste time taking notes or writing code along with the lectures.
📢 Frequently Asked Questions (FAQ)
We’ve gathered the questions most frequently asked before enrollment. Quickly find the answers to your questions!
If you have any questions about something not covered here, please feel free to post them on the Q&A board at any time.
We will provide a kind and detailed response as soon as we verify it!
[Target Audience and Prerequisite Knowledge]
Q. Is it okay to take the course if I don't know much about Python or computers?
A. Yes, it is possible. We provide detailed guidance starting with the initial environment setup, and because we use a “vibe coding” approach that lets you implement the desired functionality through natural language, you can create your own system as long as you follow along step by step.
Q. Can beginners with little development experience (such as those in their first year) follow along?
A. Yes. This course is designed around the core processes of collecting economic indicators, making machine learning predictions, and conducting technical analysis. Even if you have limited development experience, you can gain practical skills by experiencing the entire system-building process firsthand.
Q. Can I use a MacBook?
A. Yes, no problem. All library installations and structural setup used in the course are platform-independent, so you can follow the hands-on exercises in the same way on a MacBook.
[Course Structure and Recommended Learning Path]
Q. Do I have to take the previous courses?
A. It is not a requirement. This course is designed as a condensed, hands-on course, allowing you to practice right away using the core AI model code from the previous course (The Secrets of Algorithmic Trading: How AI Predicts Stock Prices). However, if you want to gain an in-depth understanding of the model’s internal logic, we recommend supplementing it with the previous course as needed.
Q. What is the difference between the Basic (Fundamentals) course and the Complete course?
A. While the ‘Fundamentals’ course focuses on building the basic framework using Python and FastAPI, the ‘Complete’ course provides practical source code for an advanced, fully automated trading system that combines deep learning and LLM (Claude) to defend against bear markets, self-recover from errors, and send real-time alerts.
Q. There are several automated trading courses. Which one should I take?
A. We have organized the three courses into one connected roadmap so that you can systematically learn market analysis and automated trading with as little trial and error as possible, all the way to building your own automated trading system. Please refer to the guide table below and choose the step that best matches your current skills and goals. (If you are viewing this on a mobile device, you can pinch to zoom for a clearer view.)
▲ The course you are currently viewing is STEP 2 Once you build the automated trading engine, STEP 3 adds bear-market protection and full automation. (On mobile, pinch to zoom for a clearer view)
[Practical Automated Trading and Technical Support]
Q. Can I trade stocks other than the top Nasdaq stocks?
A. Yes, it is possible. Since the Korea Investment & Securities API supports the entire U.S. market, after learning the course material, you can freely change and expand the system to use your desired ticker symbols or exchanges (NYSE, AMEX, etc.).
Q. Why use the Cursor IDE instead of VS Code?
A. For productivity and efficiency. Cursor has all the advantages of VS Code while being optimized for AI code suggestions, making it the most suitable environment for “vibe coding.”
Q. Do I have to use TradingView?
A. No, it is not used. This course focuses on “automation,” in which the system analyzes data and executes trades automatically, and is designed so that you can manage your trading status through your account without a separate chart UI.
Q. Are returns or win rates guaranteed?
A. This course is not an investment course that guarantees profits, but a technical course on designing and implementing your own automated trading system. Although it showed good accuracy in actual tests, you should understand that risks exist depending on market conditions and take the time to research your own investment strategy.
The person who created this course
Cybersecurity (Security Solution Development & Cryptography & Hacking)
Ransomware Prevention Solution Design & Development
Ultra-lightweight encryption and driver authentication technology for vehicles and IoT environments
Smart Home IoT Vulnerability Analysis & Hacking Tool Development
Design and development of an AI web application firewall (WAF)
Penetration testing for large enterprises
Planning
Planning a group-wide proactive defense system
Establishment of an Integrated Penetration Testing Governance Framework
Blockchain · Fintech
Mobility payment, NFT, and digital asset service architecture design and development
Building an STO (Security Token Offering) system for large enterprises
Data Platforms & Automation
Semiconductor·manufacturing line SQL·data pipeline quality management solution design and development
Planning and designing an AI workflow automation platform based on n8n, MCP, and A2A
Education & Community
Wireless Hacking and Security Special Lecture for Semiconductor Employees
Operating online courses on practical IT know-how
Half-Price Real Estate CEO
Learning materials
We will provide the learning materials via a Notion link!
The source code is provided via GitLab!
You can view the class notes right away by hovering your mouse over the playback screen (the black area) and scrolling down slightly with your mouse.
However, no materials will be shown for lessons that do not have separate lecture materials. In each curriculum, '📑' is displayed only on lessons that have lecture materials, so please take note! 😊
If you have difficulty accessing it due to an internal company network environment or similar, feel free to contact us anytime at banbu.jh@gmail.com! 😊
IT Developer at a Major Corporation | Specialist in Security, AI, Fintech, and Data
With hands-on expertise gained in the field, I help people without a technical background build their own systems.
👨💻 Professional Experience
Current IT developer at a major corporation (AI, cloud, data, and information security)
Fintech: Payment, NFT, and STO (security token) system architecture design and development
Data: Design and development of SQL and data pipeline quality management solutions for semiconductor and manufacturing lines
AI automation: Planning and designing AI workflow automation platforms based on n8n, MCP, and A2A
Security: Multiple projects, including ransomware prevention solutions, AI web application firewalls (WAF), and penetration testing for large corporations.
Half-Price Real Estate (banbu.kr) CEO — Combining practical expertise and business through a platform I plan and operate myself
🔑 An 'IT Cheat Key' Course That Teaches Only the Essentials
IT is vast, but you don’t need to know everything. If you learn exactly what you need and put it to proper use, anyone can handle IT like a pro.
My courses don’t just list theory. Drawing on practical experience and genuine dedication, they help you learn only the essential core knowledge you truly need without wasting time.
How to Apply Technology to Real-World Projects
How to Solve Real-World Problems in the Field
Know-how for non-majors to independently build businesses and portfolios
When technology becomes a powerful tool that transforms your life, I’ll be your “IT cheat key” on that journey.
kms, thank you for your valuable star rating! 😊
Thank you so much for completing the course.
I'll continue to provide more useful content for practical investments.
I will always support you. Have a good day! 💪📊
The core concepts and theories of stocks are summarized so well that I can learn them quickly. It's great to be able to see the actual creation process in detail. I'm going to go finish the rest of the course!
Hello, minho lee.
I am glad you appreciated how the course is structured to help you quickly grasp core concepts. As you mentioned, understanding the material while following the actual implementation process is the most important part. If you continue with this current flow until the end, you will certainly reach a level where you can implement an automated trading system on your own.
Please feel free to continue with the remaining lectures, and don't hesitate to leave a question whenever you have any during the process. Thank you!
It’s a really great lecture. However, I think I’ll need to watch it several times to gain an overall understanding. Thank you for the excellent lecture.
Hello, Junmin Ko!
Thank you sincerely for leaving such a valuable course review.
As you mentioned, since this course covers the interconnected flow of technology, economics, and stocks, it may initially feel somewhat difficult and unfamiliar. However, as you study the material repeatedly, you will naturally come to understand the overall context.
As we continue improving the system, please feel free to leave a question anytime if you have any concerns or questions.
Thank you.
Hello, Nam-oh Cho 😊
It’s been a little while since you completed the course, and I’m curious to know how you are putting what you learned into practice!
If there are any insights or changes you’ve experienced while actually using it, please feel free to share them 😊
Thank you for leaving such a great review 🙏