A Professional Investment Portfolio from Scratch: A Step-by-Step AI Guide
Mehmet Turan Arslan8 min read·1 hour ago--
I used AI to break down financial jargon and built a “set-and-forget” ecosystem. Here is my first 30-day report.
Introduction
Hi, I’m Mehmet Turan. I’m a first-year Software Engineering student with a deep interest in coding, AI, finance, and investing. I’m still a learner at heart, and I’m here to share my learning journey with you. (Disclaimer: This is not financial advice. Please do your own research before making any investment decisions.)
Most people don’t start investing because they think it’s too complicated. I used to think the same, but then I realized the barrier isn’t money or math — it’s the jargon. Once we grasp a handful of core concepts, everything becomes incredibly simple.
As an engineering student, I believe that to understand a complex system, we must first look at its components. Investing is no different. Today, we have a powerful ally to help us do just that: Artificial Intelligence.
If you’re ready, let’s quickly learn the essential terms to build our vocabulary, and then we’ll use AI to build a professional fund portfolio step-by-step. I’ve broken down the terms into “layers” for you:
Layer 1 — Basic Concepts
- Portfolio: Buying a single stock is like betting on a single horse. A portfolio is a basket where you hold multiple investment tools together. (If one falls, the others hold you up.)
- Diversification: The “don’t put all your eggs in one basket” rule. You spread the risk by investing in different sectors and assets.
- Risk-Return Trade-off: Every investment that promises higher returns also carries a higher potential for loss. Savings accounts are safe but offer low returns; stocks can earn more, but can also lose more. They always go hand in hand.
- Volatility: Imagine two neighbors: one is moody and unpredictable, the other is always calm. High volatility is like the moody neighbor — the price goes up 5% today and drops 7% tomorrow. It’s not necessarily bad, but it can be stressful if it doesn’t match your goals.
Layer 2 — ETF and Mutual Fund Concepts
- ETF (Exchange-Traded Fund): You buy one “ticket,” but that ticket gives you ownership in hundreds of different companies at once. You can buy and sell them on the stock exchange just like individual stocks.
- Mutual Fund: A group of people pool their money into a fund managed by a professional. Unlike ETFs, they are traded once a day at a fixed price.
- Index: A “ruler” that measures the performance of the largest companies in a country (e.g., the S&P 500). An index fund tracks this ruler and invests in all those companies.
- Active vs. Passive Management: In active management, an expert decides what to buy and sell every day. In passive management, the fund simply tracks an index. Research shows that passive funds often outperform active ones in the long run.
- Expense Ratio (Management Fee): Fund managers don’t work for free. They take a small annual percentage of your investment. ETFs usually have very low fees (e.g., 0.05%), while active funds are more expensive.
Layer 3 — Building Your Portfolio
- Asset Allocation: A plan like 60% stocks, 30% bonds, and 10% gold. The ratio changes based on your age, risk tolerance, and goals.
- Rebalancing: If your stock ETF grows too much and now makes up 80% of your basket instead of the planned 60%, you sell the excess and move it to bonds. This is usually done once or twice a year.
- Dollar-Cost Averaging (DCA): Investing a fixed amount of money every month. You buy more shares when prices are low and fewer when they are high. This saves you from the stress of trying to “time the market.”
- Time Horizon: Money you need in 3 months cannot be invested the same way as money you’ll need for retirement in 20 years. Your waiting capacity determines your portfolio structure.
Layer 4 — Transaction Details
- Settlement (T+2): When you sell an ETF, the cash doesn’t hit your account instantly. There is usually a 2-business-day waiting period for the transaction to finalize.
With these concepts, you’re more than ready to start. Now, let’s look at the professional fund portfolio.
What is a Professional Fund Portfolio?
Professional investors don’t try to predict the future. Instead, they build a system ready for any scenario. A professional portfolio is a balanced set of investments designed to survive different market conditions.
- It focuses on not losing as much as it focuses on winning.
- It is spread across different asset classes.
- It plays the long game.
Now, let’s meet our “players.” We have 5 roles, and we will find the perfect funds for them using AI.
1. The Core Growth Engine (Broad Market)
- Goal: Capture general economic growth.
- Why we need it: This is the foundation of our house. It won’t make you rich quickly, but historically it’s the most reliable way to beat inflation over the long term.
The Prompt I Used: “I’m looking for the ‘Core Growth Engine’ of my portfolio. What is a proven ETF with very low management fees that allows me to capture the long-term growth of the US economy?”
AI’s Response: “I recommend VOO (Vanguard S&P 500 ETF). This fund offers the 500 largest and strongest US companies in a single package. Historically, it’s the most reliable way to build wealth. Because Vanguard’s fees are near zero, more of the profit stays in your pocket.”
2. The Tech Driver (Global Innovation)
- Goal: Invest in global tech giants like Apple, Microsoft, and Amazon.
- Why we need it: While the core engine provides stability, this section is designed to accelerate returns. It has high growth potential but can have sharper drops.
The Prompt I Used: “What should I choose for the ‘Tech Driver’ role? I need a fund that supports my core engine by covering global mega-trends and the world’s largest software giants.”
AI’s Response: “The best choice for this is QQQ (Invesco QQQ Trust). This fund tracks the Nasdaq 100. It doesn’t include banks or traditional industries; it focuses on innovation leaders. It can be volatile, but it adds significant growth momentum.”
3. The Crisis Shield (Safe Haven)
- Goal: To be a safe harbor during wars, pandemics, or inflation shocks.
- Why we need it: When stock markets crash, panic sets in. This asset is our insurance policy. It keeps the portfolio balanced and helps you sleep at night.
The Prompt I Used: “I need a ‘Crisis Shield’ to protect me when markets crash. Instead of buying physical gold, what is a low-cost ETF that tracks gold prices?”
AI’s Response: “IAU (iShares Gold Trust) is an excellent choice. It directly tracks the price of physical gold. It has lower management fees than the more famous GLD, making it a perfect insurance policy for your portfolio.”
4. The Opportunity Fund (Cash / Dry Powder)
- Goal: A zero-risk area that earns daily interest.
- Why we need it: If the market drops 20% tomorrow, we want to buy the dip. This is our “dry powder.”
The Prompt I Used: “I want to keep some cash as an ‘Opportunity Fund.’ Risk must be zero, but I want it to earn a little interest against inflation. What should I hold instead of just cash?”
AI’s Response: “SGOV (iShares 0–3 Month Treasury Bond ETF) is perfect for this. It invests in very short-term US Treasury bills. The price is practically stable, and it pays out regular monthly dividends (interest). This is the cash you’ll use to buy stocks when they are cheap.”
5. The Spice (Thematic Investments)
- Goal: Invest in a specific future trend you believe in (AI, clean energy, etc.).
- Why we need it: This is the high-risk, high-reward section. We keep it small, but if the trend explodes, it adds “spice” to our total returns.
The Prompt I Used: “I’m looking for a ‘Spice’ for my portfolio — a high-risk, high-reward trend for the next 10 years. What should I look into?”
AI’s Response: “I suggest SMH (VanEck Semiconductor ETF). It focuses on the chips that power AI. During a gold rush, the people who made the most money were those selling the shovels. SMH holds companies like Nvidia and TSMC — the ‘shovels’ of the AI era.”
Adjust the Settings Based on Your Age
How much should you put into each? The most important thing is that you can sleep peacefully at night. Here are three sample models:
1. Ages 20–35: “Aggressive Growth” Mode Time is your biggest asset. You can afford to wait out market drops.
- VOO (Core): 50%
- QQQ (Tech): 25%
- SMH (Spice): 15%
- IAU (Gold): 5%
- SGOV (Cash): 5% Summary: 90% Offense, 10% Defense.
2. Ages 35–50: “Balanced Growth” Mode You want to keep growing, but you also want to protect your significant savings.
- VOO (Core): 45%
- QQQ (Tech): 20%
- IAU (Gold): 15%
- SGOV (Cash): 10%
- SMH (Spice): 10% Summary: 75% Offense, 25% Defense.
3. Ages 50+: “Wealth Preservation” Mode Retirement is near. Protecting your principal is now more important than growing it.
- VOO (Core): 35%
- IAU (Gold): 25%
- SGOV (Cash): 25%
- QQQ (Tech): 15%
- SMH (Spice): 0–5% Summary: 50% Offense, 50% Defense.
Conclusion
Today, we didn’t just build a fund basket; we built an ecosystem that can protect our money in any weather. It’s diversified, balanced, and — most importantly — understandable.
I found these funds on April 14th. Today is May 14th. Exactly thirty days. We all know what happened in the world during this time… Markets were shaky, headlines were dark, and everyone was scrambling.
What did our ecosystem do? Here are the screenshots from my phone:
I’ll let you interpret the results. But I must say, the most valuable thing over those thirty days wasn’t the profit — it was not feeling like I had to do anything. I had built the system, and I trusted the system. You can build it too.
All it takes is curiosity. ✦
