Sovereign KapitixThe strongest argument for a small first deposit has nothing to do with markets. It is that you are testing a process — signup, verification, funding, a first position and, most importantly, a withdrawal — and you want that test to cost as little as possible.
Run the full loop with the minimum amount. Deposit, wait, withdraw a part of it and watch how long the money takes to come back and whether it returns to the method you used. A platform that handles a small withdrawal cleanly is a platform worth scaling into.
Only after that round trip does it make sense to think about size, and even then in steps rather than in one move. Nothing about a bigger deposit makes a strategy work better; it only makes the same outcome larger in both directions.
Why the first deposit is the one to think about
The first deposit sets the habit. An amount chosen because it is comfortable tends to be followed by decisions made calmly; an amount chosen because it felt like the maximum possible tends to be followed by decisions made under pressure.
A workable starting point
Money you would not need back within a year, in an amount whose loss would be annoying rather than damaging. That is a personal number and nobody else can set it for you.
Adding to it later
Topping up a balance you already understand is a far better position than starting large and learning afterwards.
Questions worth asking before you send anything
How do I withdraw, and to where? What is deducted, and by whom? Who do I contact if something looks wrong? A service that answers all three clearly and in writing is behaving the way it should.
Investing involves risk, including the possible loss of some or all of the capital you invest. The value of investments can fall as well as rise, and you may get back less than you originally put in. Never invest money you cannot afford to lose.