Learn Dutch: Hoe meer het aandeel daalt, hoe meer de belegger koopt. - The more the share falls, the more the investor buys.

In the hoe ..., hoe ... (the ..., the ...) structure, both parts of the sentence act like subordinate clauses. This means the conjugated verb is pushed to the very end of each clause, which is why we see het aandeel daalt and de belegger koopt.

What is the opposite of daalt if the stock is going up?

The opposite of dalen (to fall or decrease) is stijgen (to rise or increase). If the stock were going up, the sentence would start with: Hoe meer het aandeel stijgt...

Does aandeel only mean a financial share in a company?

It means a financial stock or share in this context, but you can also use aandeel to talk about a share or contribution in everyday life, such as your share of the household chores.

Is the word belegger (investor) related to beleg (sandwich toppings)?

Yes! Both come from the verb beleggen. When talking about food, beleggen means to cover something with a layer (giving us beleg for toppings). In finance, beleggen means to invest, which gives us de belegger (the investor).