What is a sector?
A sector is simply a family of companies that do similar work. All the banks form one family, all the medicine makers another, all the clothing makers another. Grouping companies this way helps you make sense of the market. Instead of seeing 300 random names, you start to see neat neighbourhoods — and you can compare a company against its true neighbours rather than against the whole city.
Why sectors matter to you
Sectors matter for two big reasons. First, fair comparison: a bank should be judged against other banks, not against a textile mill, because they earn money in completely different ways. Second, safety: if all your money sits in one sector and that sector hits hard times, you feel the full blow. Knowing the sectors lets you compare wisely and spread your risk sensibly.
The main sectors on the Dhaka market
- Banks and financial companies — they lend money and earn from interest and fees
- Pharmaceuticals — they make medicines; often steady, defensive businesses
- Textiles and garments — a huge part of Bangladesh's economy, but competitive
- Food and consumer goods — everyday products people buy in any weather
- Fuel and power — electricity and energy companies
- Telecom — mobile and internet providers
- Cement, engineering, insurance and more — each with its own rhythm
Each sector marches to its own drum
Different sectors react differently to the same news. When interest rates rise, banks may benefit while heavily borrowed companies feel the squeeze. When people tighten their budgets, food and medicine companies often hold up better than luxury goods, because people still need to eat and stay healthy. Understanding these rhythms helps you see why two companies can move in opposite directions on the very same day.
Spreading across sectors protects you
Here is the practical payoff. If you put every taka into bank shares and the banking sector struggles, your whole savings struggle with it. But if your money is spread across, say, a bank, a medicine maker, and a food company, a bad spell in one is cushioned by the others. This simple habit — not keeping all your eggs in one basket — is one of the easiest ways to lower your risk.
How to use sectors when you invest
When you consider a company, first ask which sector it belongs to, then compare it against others in that same family — not against unrelated businesses. As you build your holdings, try to own strong companies from a few different sectors rather than several from just one. You are not trying to own everything; you are simply making sure one stumble cannot knock over your whole basket.