A falling share price may attract attention, but a discount compared with yesterday does not establish good value. During a crisis, useful questions concern what you are buying, what could go wrong and whether you can bear the consequences. No list of sectors guarantees capital protection.
Archive image used for illustration; the charts and figures shown are not current market quotations.
Start with the money you may need
The CNMV’s stock-market guide explains that shares can lose value and that past performance does not guarantee future results. Even a business with good results is not assured a rising share price. Before choosing shares, distinguish savings needed for near-term expenses and emergencies from any amount you are considering exposing to loss.
Write down three things: the purpose of that money, when you would need it and what loss would disrupt your plans. If a possible fall in your income changes an answer, revisit it before examining a buying opportunity.
“Defensive” does not mean protected
Selling everyday products does not answer every question about a business. Use the company’s published accounts and reports to investigate:
- Where does revenue come from, and how dependent is it on one customer or market?
- Which debts fall due soon, and how does the company plan to meet them?
- Does the business generate cash or depend on additional financing?
- Which risks does the company itself identify, and what changed since its previous report?
These questions organize your reading; they do not turn an isolated indicator into a buy signal. For example, a biotechnology company with products in development should not be considered safe merely because it belongs to healthcare.
Look at the whole portfolio
The CNMV’s diversification material connects assets with an investor’s different time horizons and objectives. Spreading exposure can reduce the impact of an individual problem, but does not remove the possibility of losses. Buying several similar businesses may leave you exposed to the same underlying risk.
When comparing funds, note their main holdings and exposures. Funds with different names can own overlapping investments. The number of products in your account is not a sufficient measure of diversification.
An ETF needs scrutiny too
The CNMV’s ETF factsheet discusses market, liquidity, counterparty and currency risks. Check the index or strategy followed, the costs and the trading conditions. A fund concentrated in one sector is not equivalent to a portfolio spread across sectors.
Write down your reasoning before deciding
Summarize why you understand the product, what information is missing and which scenario would put your finances under strain. Include the costs of buying, holding and selling. If your only reason is “the price has fallen a lot,” the analysis is incomplete. Seek advice from an appropriately authorized professional when you need a recommendation tailored to your circumstances.
Sources checked
CNMV educational material checked on 22 September 2026 is linked in each section. This guide does not recommend particular securities or predict returns. Explore more Buscatea guides.
