Shares for beginners sounds like a simple topic, and the basic idea is: with a share you hold a stake in a company. The harder part is judging the risks realistically. This guide explains what a share is legally, where losses can come from and how to put risks in perspective. It contains no buying recommendation and names no individual stocks.
Short answer: A share represents a portion of the share capital of a stock corporation (section 1(2) of the German Stock Corporation Act, AktG). Under section 1(1) AktG only the company’s assets answer for its liabilities, not your private assets. The price can still fall sharply, and in the extreme case the amount invested is lost entirely (last updated November 2026).
Key points at a glance
- A share is a portion of the share capital of a stock corporation (Aktiengesellschaft), not a savings account and not a bond.
- Shareholders do not answer with their private assets for the company’s debts, but they can lose their entire stake.
- Prices fluctuate, and profits or dividends are not guaranteed.
- The deposit guarantee for bank balances does not protect against price losses on securities.
- Spreading money across many companies reduces the risk of individual failures but does not remove market risk.
What exactly is a share?
Under section 1 AktG a stock corporation is a company with its own legal personality and has a share capital divided into shares. A share is therefore a fraction of that capital. The law knows two forms: par-value shares must be for at least one euro, while no-par shares carry no nominal amount and all participate equally in the share capital, with the arithmetical share per share not falling below one euro (section 8 AktG). For you as an investor, what matters most is the price, which forms on the stock exchange through supply and demand.
As a shareholder you are a co-owner, not a creditor. You have no claim to repayment of a particular amount. That sets shares apart from bonds and from balances in an instant-access savings account. How instant-access and fixed-term deposits compare is explained in Tagesgeld oder Festgeld: Was für junge Sparer passt (in German).
How can you earn money with shares?
There are essentially two sources: price gains, if you sell a share for more than you paid, and dividends, if the company distributes profit. Both are uncertain. A company can cut or cancel the dividend, and the price can fall below your purchase price. Income is also generally taxable. How much stays tax-free under the saver’s allowance (Sparerpauschbetrag) is covered in Sparerpauschbetrag 2026: Wie viel Kapitalerträge steuerfrei bleiben (in German).
What risks do shares carry?
| Risk | What lies behind it | What you can do |
|---|---|---|
| Price risk | The price moves daily with news, interest rates and sentiment | Set your investment horizon and loss capacity in advance |
| Company risk | A single company can get into trouble or become insolvent, and then the share can become worthless | Spread across many companies |
| Concentration risk | Too much money in one sector, one country or one share | Mix sectors and regions |
| Liquidity risk | With thinly traded shares there may be no buyer at the price you want | Pay attention to tradability |
| Behavioural risk | Panic selling after price falls or buying out of euphoria | Set rules in advance and check social media tips critically |
| Currency risk | Shares in foreign currency also move with the exchange rate | Consider your own target currency |
A worked example with a clear assumption helps: you buy shares for 1,000 euros and the value falls by 40 percent to 600 euros. To get back to 1,000 euros you then need a rise of about 66.7 percent, not 40 percent. Losses weigh more heavily in arithmetic than gains of the same size. This is not a forecast but arithmetic.
What does limited liability mean for you?
Under section 1(1) AktG only the company’s assets answer to creditors, not the shareholders. With a share you therefore do not have to pay in more money if the company has debts. Your maximum loss is the amount invested. That applies to the share itself. With leveraged products such as certain derivatives, certificates or CFDs the position can be different, so consider such products only after thorough information.
How do shares differ from bonds and instant-access savings?
The three forms differ mainly in legal position and risk. The table shows the basic logic, not specific products or returns.
| Feature | Share | Bond | Instant-access savings (Tagesgeld) |
|---|---|---|---|
| Your role | Co-owner of the share capital | Creditor of the issuer | Creditor of the bank |
| Income | Price gain and possible dividend | Interest, usually on set dates | Interest that the bank can adjust |
| Repayment | No fixed repayment amount, sale at the market price | Repayment at maturity, provided the issuer pays | Balance is in principle available at any time |
| Main risk | Price loss up to a total loss | Issuer default, price swings before maturity | Low, covered by deposit guarantee within the legal framework |
The table shows why shares are no substitute for reserves. If you need money at short notice, for rent, a semester fee or a repair, you may be forced to sell at a poor price. Reserves therefore belong in an account you can access at any time.
How do you deal with the risk?
- Build an emergency fund first and invest only money you will not need for the foreseeable future.
- Spread your money widely instead of betting on a single share. Broadly diversified funds are one possible route, with their own pros and cons.
- Mind costs such as order fees and ongoing fund costs. They matter over long periods.
- Decide according to a plan, not according to headlines.
How to take the first steps is shown in Geld anlegen im Studium: Erste Schritte für Anfänger (in German). What you need for a securities account is in Depot eröffnen: Was du für ein Wertpapierdepot brauchst (in German).
Frequently asked questions
Can I lose more than my money with shares?
Not when buying a share: the maximum loss is the amount invested, because under section 1(1) AktG shareholders do not answer for the company with their private assets. Products with leverage or short sales follow other rules that you should check carefully before buying.
Are shares protected by the deposit guarantee?
The deposit guarantee applies to balances in accounts, not to price losses on securities. How the protection of your securities works if the custodian becomes insolvent is something to ask your provider.
How much money do I need to start with shares?
That depends on the provider and the share. More important than the minimum amount are your emergency fund, your investment horizon and the question of which loss you can bear. Find out about the costs and terms of your securities account.
Are shares the same as ETFs?
No. A share is a stake in a single company. An ETF bundles many securities in one fund. Price and loss risk exist with both, but the concentration risk differs. More in ETF-Sparplan im Studium: So funktioniert er Schritt für Schritt (in German).
What to do now
- Check your reserves and ongoing obligations first. Shares come after that.
- Set an investment horizon and a maximum loss limit before you buy.
- Find out about costs, securities account providers and taxes, and compare several routes instead of being guided by advertising.
- Start small, document your decisions and review them at fixed intervals.
- If you want to place your investment in the context of your overall situation, personal advice is available, for example from Academycon (How we work, in German).
Related guides
- Geld, Konto und Kredit: Der Überblick für junge Erwachsene (in German) (hub)
- Geld anlegen im Studium: Erste Schritte für Anfänger (in German)
- Depot eröffnen: Was du für ein Wertpapierdepot brauchst (in German)
- Neobroker im Vergleich: Worauf du bei Sparplänen achten solltest (in German)
- Finfluencer in Social Media: Woran du unseriöse Finanztipps erkennst (in German)
Last updated: November 2026. This guide is general information, not individual advice.
