An Index Is a Rulebook, Not an Account
Meet the fictional Northstar 100. It is a list maintained by rules, not a pot of money you can buy directly.
Why this matters for beginners
Mixing up the index, the provider and the fund leads to wrong ideas about where your money goes. This is general education, not personal advice.
Main explanation
The index is a calculated measurement. The Northstar 100 follows defined rules: which companies qualify, how much each weighs and when the list is reviewed.
The index provider is the organisation that maintains those rules. It can change constituents or weights according to its published methodology.
An index fund or ETF is an investment product that tries to follow the index. Different funds from different companies can all follow the same Northstar 100.
The companies inside the index are ordinary businesses. A company does not automatically receive new business revenue when it joins an index.
Investors who buy an index fund own shares in the fund structure, not shares issued directly to them by every company in the index.
The index itself does not hold investors' money. Only the funds do.
Example using a real company
Two different fund providers can both offer a Northstar 100 fund. Same index, same rules, separate products with separate fees.
- →The Northstar 100 rises 2 percent: the measurement rose. Each fund following it should rise about the same, minus costs.
- →The provider swaps one company for another at the quarterly review: every fund following the index must adjust.
Common beginner mistakes
- ✕Thinking buying an index fund means the companies receive your money.
- ✕Thinking the index itself is a product you can buy.
Key terms
- Index
- A calculated measurement that follows defined rules.
- Index provider
- The organisation that maintains the index rules.
- Index fund
- An investment product that tries to follow an index.
- Constituent
- A company currently inside the index.
Key takeaways
- 01Index, provider, fund and company are four separate things.
- 02The index holds no money; funds do.
Check yourself
- 01Who can change which companies are in the Northstar 100?
- 02You buy a Northstar 100 fund. What do you own?
- 03Can two different funds follow the same index?
- 04A company joins the Northstar 100. Does it automatically get new business revenue?
Try the concept on a real company
Open a large company in the Analyzer and remember: an index listing it is a measurement, not a customer.
Educational examples only. Not buy or sell recommendations.