Stocks & Funds
Vietnam stocks, US stocks, ETFs, funds and index investing.
- ·2 min read
Tracking Error: Why an ETF Never Follows Its Index Perfectly
An index ETF never replicates its index perfectly — there's always a small gap called tracking error. The causes lie in fees, cash, taxes, and rebalancing, and it's an important quality metric when choosing an ETF.
- ·2 min read
Closed-End vs. Open-End Funds: The Difference and Why It Matters
Open-end funds issue and redeem shares at net asset value, while closed-end funds have a fixed share count and trade on an exchange by supply and demand — possibly above or below the real asset value. Know the difference to choose right.
- ·2 min read
Rights Issues Explained: What Shareholders Need to Know
When a company issues new shares to existing shareholders at a discount, the share price is adjusted and your ownership can be diluted if you don't participate. How rights issues work and the three choices a shareholder has.
- ·2 min read
Equal-Weight vs. Cap-Weight Indexes: Two Different Ways to Build a Basket
Most famous indexes are market-cap weighted — the bigger the company, the larger its share. Equal-weight indexes give every stock the same weight. This difference changes the risk, concentration, and behavior of an index fund.
- ·2 min read
Leveraged and Inverse ETFs: Why They Decay Over Time
Leveraged and inverse ETFs aim for 2x, 3x, or opposite daily returns. We explain how daily rebalancing causes volatility decay and why they are short-term tools, not investments.
- ·2 min read
Board Lots and Odd Lots in Vietnamese Stocks
A board lot is a multiple of 100 shares; an odd lot is the part below 100. We explain the lot rules on HOSE/HNX, why odd lots are hard to sell, and how to handle leftover shares.
- ·2 min read
What Is a Covered Warrant
A covered warrant lets you bet on an underlying stock price with small capital and high leverage. We explain how it works, the leverage, the risk of total loss, and how it differs from stocks.
- ·2 min read
What Is the Ex-Rights/Ex-Dividend Date: Why a Stock Price "Drops by Itself"
The ex-rights date is the day buying a stock no longer entitles you to the upcoming dividend or rights. We explain the mechanism, why the price adjusts down, and how not to be confused.
- ·2 min read
Foreign Ownership Limit ("Room") in Vietnamese Stocks
The foreign ownership limit is the maximum percentage foreign investors can own of a Vietnamese stock. We explain the mechanism, why "full room" affects price, and what it means for local investors.
- ·2 min read
HOSE, HNX, UPCOM Explained: Vietnam Three Stock Exchanges
HOSE, HNX, and UPCOM are Vietnam three stock trading venues with different listing standards and risk levels. We explain each one so investors can choose correctly.
- ·2 min read
How to Read a Stock Price Board: Understanding the Colors and Numbers
A stock price board full of colors and numbers can overwhelm beginners. We explain ceiling/floor/reference prices, bid/ask queues, matched price, volume, and foreign flows.
- ·2 min read
Ceiling Price, Floor Price, Reference Price, and the Price Band
Each session, Vietnamese stocks can only move within a band around the reference price, creating ceiling and floor prices. We explain how they are calculated and what they mean for investors.
- ·2 min read
Stock Dividends and Bonus Shares: Are Extra Shares Really "Profit"?
Stock dividends and bonus shares increase your share count but the price adjusts down proportionally. We explain the difference from cash dividends and why total value does not rise by itself.
- ·2 min read
Stocks vs Fund Certificates: Pick Your Own or Let a Fund Do It?
A stock is direct ownership of a business; a fund certificate is ownership of a slice of a managed portfolio. We explain the differences, pros and cons, and who suits which.
- ·2 min read
What Is T+2 Settlement: Why You Cannot Sell a Stock the Day You Buy It
T+2 is Vietnam stock settlement cycle: shares arrive in your account 2 business days later. We explain the mechanism, its impact on trading, and key notes for investors.
- ·2 min read
Vietnam Corporate Bonds: What Risks Come With the High Yield?
Corporate bonds pay higher interest than bank deposits but carry default risk. We explain how they work, the risks specific to Vietnam, and how to evaluate them before buying.
- ·2 min read
Vietnam Stock Order Types: LO, MP, ATO, ATC Explained
The Vietnamese stock market has several order types: LO, MP, ATO, ATC, and MTL/MOK/MAK. We explain when to use each so you place orders correctly and avoid rejections.
- ·2 min read
VN30 Index Futures: How Vietnam Derivatives Work
VN30 index futures are Vietnam most popular derivative, letting you bet on the index rising or falling with leverage. We explain the mechanism, margin, profit/loss, and risks.
- ·3 min read
What Are Options: Understanding Calls and Puts in 10 Minutes
Options give the buyer the right (not the obligation) to buy or sell an asset at a preset price. We explain calls, puts, the premium, leverage, and the risk of losing the entire premium.
- ·2 min read
What Is the VN-Index: The "Temperature" Gauge of Vietnam Stock Market
The VN-Index reflects the price movement of all stocks listed on HOSE. We explain how it is calculated by market cap, why it gets "skewed" by large stocks, and how to read it correctly.
- ·2 min read
What Is the VN30 Index: Vietnam Top 30 Stocks
The VN30 is an index of the 30 largest, most liquid stocks on the HOSE exchange. We explain how the basket is selected, how it differs from the VN-Index, and why investors track it.
- ·2 min read
The Fund Expense Ratio: The Silent Fee That Erodes Returns
An expense ratio is a fund annual management fee charged as a percentage of assets. We explain why a number as small as 1% costs you so much over decades through reverse compounding.
- ·2 min read
Defensive vs Cyclical Stocks: What Is the Difference?
Defensive stocks stay stable through every economic phase; cyclical stocks rise and fall with the economic cycle. We explain the characteristics of each, example industries, and how to combine them by market context.
- ·2 min read
What Are Dividend Aristocrats? Companies That Raise Dividends Relentlessly
Dividend aristocrats are companies that have raised their dividends for many consecutive years. We explain why this track record reflects quality, and the pros and cons of investing in this group.
- ·4 min read
Gold, Crypto, or Stocks — Where Should You Put Your Money?
A clear comparison of the three most popular investment channels: gold, cryptocurrency, and stocks. Risk, return potential, liquidity, and the role each plays in a balanced portfolio — instead of picking just one.
- ·2 min read
What Is Commodity Investing? Gold, Oil, and Raw Materials
Commodities are raw materials like gold, oil, and agricultural products. We explain how to invest in commodities, why they hedge inflation, and the risks of this volatile asset class.
- ·3 min read
Large-Cap, Mid-Cap, Small-Cap Stocks — What Is the Difference?
Market capitalization classifies stocks into large-cap, mid-cap, and small-cap. We explain how to calculate market cap, the risk-return profile of each group, and how to combine them in an investment portfolio.
- ·3 min read
What Are Profit Margins? Gross, Operating, and Net Margins Explained
Profit margins show how much of revenue a company keeps as profit. We explain the three types (gross, operating, net), what each means, and how to use them to assess company efficiency.
- ·2 min read
What Are Safe Haven Assets? Where Money Flows in a Crisis
Safe haven assets are those that hold or gain value when markets are turbulent. We explain the common types, why they matter, and the caveat that "safe haven" does not mean "no risk."
- ·3 min read
What Are Bonds? Understanding a Safer Asset Than Stocks
A bond is a loan with a fixed interest rate — safer than stocks but with lower returns. We explain how bonds work, the common types, their risks, and their role in a balanced portfolio.
- ·3 min read
What Is a Mutual Fund? Investing When You Have No Time to Pick Stocks
A mutual fund pools money from many investors for professionals to manage. We explain how mutual funds work, NAV, management fees, the difference from ETFs, and whether a mutual fund is right for you.
- ·2 min read
What Is a Penny Stock? Why Cheap Stocks Are Often Dangerous
A penny stock is a very low-priced stock of a small company. We explain why "cheap" does not mean "a bargain," the major risks like low liquidity and manipulation, and how to approach them cautiously.
- ·3 min read
What Is a REIT? Investing in Real Estate Without Buying Property
A REIT is a real estate investment trust, letting you invest in real estate through securities without buying property directly. We explain how REITs work, their pros and cons, and the risks to know.
- ·3 min read
What Is a Stock Buyback? How Companies Return Money to Shareholders
A buyback is when a company uses cash to repurchase its own shares, reducing the number outstanding. We explain how buybacks raise per-share value, compare them to dividends, and when they are good or bad.
- ·3 min read
What Is a Stock Market Index? Understanding the S&P 500 and More
A stock market index measures the overall movement of a group of stocks, representing market health. We explain how indexes work, common examples, and why index investing is simple yet effective.
- ·3 min read
What Is a Stock Split? Why the Price Drops but You Lose Nothing
A stock split increases the number of shares and reduces the price per share proportionally, but the total value stays the same. We explain how it works, why companies do it, and reverse splits.
- ·2 min read
What Is an IPO? Understanding a Company Going Public
An IPO is the first time a company sells shares to the public and lists on an exchange. We explain how an IPO works, why companies do it, and the opportunities and risks of buying IPO stock for individual investors.
- ·3 min read
What is an ETF? Index investing for beginners — simple and effective
An ETF is a fund traded on an exchange — buy one ticker and own a whole basket. How ETFs work, why index investing beats most active funds, and ETFs to know.
- ·5 min read
DNSE trading bot — Automating Vietnam stocks in 2026
DNSE is the first Vietnam stock broker to offer API connectivity to retail customers. Overview of automation options, key trading rules (sessions, lot sizes), and how to get started quickly.
- ·5 min read
How to track US stocks from Vietnam
More Vietnamese investors are exploring opportunities in the US market — Apple, Microsoft, Nvidia, Amazon. The biggest challenge is the timezone gap. How to effectively track US stocks from Vietnam using Telegram-based price alerts.