Stock Investment Basics Guide: Getting Started for Beginners

📅 2025-01-22

Want to start stock investing but feels overwhelming? Learn stock investment basics from account opening to stock selection.

1. What is Stock?

Stock is security representing ownership of a company. Buying stock makes you partial owner of that company. Profit methods: ① Stock price rise (capital gain): Buy low, sell high. ② Dividends: Company distributes part of profits to shareholders. Stock markets: Korea Exchange (KOSPI, KOSDAQ), US (NYSE, NASDAQ), Japan (Tokyo Stock Exchange), etc. Market cap = Stock price × Outstanding shares. Larger market cap = large-cap stock, smaller = small-mid cap stock. Stocks have 7-10% annual average return long-term (S&P500 100-year average).

2. Open Securities Account

Choose brokerage: Samsung Securities, Mirae Asset, Kiwoom, NH Investment, Korea Investment, etc. Compare commission, app usability, HTS/MTS convenience. Open account: Non-face-to-face opening possible (ID photo in app, video call). Complete within 10 min. Account types: Custody account (general), ISA (tax saving), pension savings (retirement). Foreign stock account: Need separate opening for US stock investment. Deposit: Transfer from bank account to securities account. Immediately tradable. Trading commission: Usually 0.015-0.05% (online discount). Example: 150-500 KRW for 1M KRW purchase.

3. Basic Stock Terms

Buy/Sell: Buying stock/selling stock. Bid/Ask: Buy/sell order price. Execution: Trade completion. Open/Close/High/Low: Opening price/closing price/highest/lowest. Volume: Number of shares traded per day. High volume = high liquidity. PER (Price-to-Earnings Ratio): Price ÷ Earnings per share. Lower = undervalued, varies by industry. PBR (Price-to-Book Ratio): Price ÷ Book value per share. Below 1 = undervalued vs liquidation value. ROE (Return on Equity): Net profit ÷ Equity × 100. Higher = better profitability. Dividend yield: Annual dividend ÷ Price × 100.

4. Investment Strategy for Beginners

① Long-term investing: Ignore short-term volatility, hold 5-10+ years for compound effect. ② Diversification: Don't put all eggs in one basket, diversify across 10-20 stocks or ETFs. ③ Blue-chip investing: Large stable stocks like Samsung Electronics, Naver, Kakao. ④ ETF investing: KODEX 200, TIGER US S&P500 invest in entire market. ⑤ Dollar-cost averaging: Invest fixed amount monthly to lower average purchase price. ⑥ Dividend stock investing: Receive stable dividends, retirement preparation. Ex: KB Financial, SK Telecom. ⑦ Study: Financial statements, industry trends, news analysis.

5. Beginner Mistakes to Avoid

① Investing with debt: Leverage amplifies losses too, no credit/loan investing. ② Short-term speculation: Day trading loses to commissions and taxes. Beginners should invest long-term. ③ Blindly follow tips: Don't blindly trust cafe/YouTube stock tips, analyze yourself. ④ No stop-loss: Hard to recover if loss exceeds -30%. Set stop-loss criteria (-10~15%). ⑤ Emotional trading: Repeatedly selling in fear, buying in greed. Stick to principles. ⑥ Excessive trading: Frequent trading increases commissions and taxes. ⑦ Lack of diversification: Investing entire fortune in one stock is high risk.

6. First Investment Execution Guide

Step 1: Decide investment amount. 30-50% of total assets, exclude emergency fund (6 months salary). Step 2: Study. Analyze company financials (revenue, operating profit, debt ratio), industry outlook. Step 3: Select stocks. Choose industries/companies you know (Samsung Electronics, Kakao, etc). Step 4: First purchase. Don't invest all at once, split purchase 3-4 times. Step 5: Regular monitoring. Check quarterly earnings, news. Step 6: Long-term holding. Hold 5+ years without being shaken by short-term fluctuations. Step 7: Rebalancing. Review and adjust portfolio 1-2 times annually. Recommended first investment: Build experience with small purchase of KODEX 200 ETF or Samsung Electronics.

Conclusion

Stock investing is not short-term gambling but long-term wealth building tool. Master basics and start with small amounts to gain experience.

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