they always choose the safest Exchange platform, when it is an investment, they generally leave their money until they get great benefits without touching it no matter what happens, very rarely they also combine it with the market speculation, since the risks increase enormously
You mean leaving your assets in exchanges itself for longer duration? That cannot be a right approach as per this community's long discussed topics; Yes there were at least 10+ topics on leaving your assets within exchange to skip withdrawing fees and network delays for confirmation. If you want your investments to be much safer then you should never leave your assets within exchanges.
This is applicable for all types of exchanges regardless of their age in the markets nor their reputation level; because you cannot predict what is going to happen tomorrow. Crypto exchanges are known for getting easily hacked in more numbers compared to other market's exchanges.
I am making my investment decisions based on multiple criteria; among them few are:
1. I do watch on particular asset (which is in consideration) for more than 1 month.
2. I do check for circulating supply/marketcap.
3. Checking Github for activity of devs.
4. Number of exchanges it got listed out.
5. Its ATH and time of ATH.
6. ANN topic activity on this forum.
7. I may go for starting a topic to hear this community's opinion if needed.
Well not exactly, but if an important movement occurs and you have available in the Exchange you can react faster, the case of companies and Institutional money usually handle money in Exchanges and wallets.
And according to their criteria I understand them, although before I thought in a similar way, according to my little experience and due to the reading of some books of market speculators, what I know about the Bitcoin market is that Bitcoin is the "Action" or "Safe currency", when you have this security it is safe to have the investment there and leave it for as long as necessary, in the case of the Alts it is different, since they depend on the Bitcoin movement, by following new technologies and innovation in characteristics of the currency even following the best project, when Bitcoin falls in price, it will most likely bleed, and when Bitcoin is in a bullish trend, it rises, is the logic.
There are many Hodlers who keep their coins, somehow they take care of them on some occasions, but this represents money, in my case I always check the graph, its history, the volume, if the coin is old I trust more, if the coin is young I don't do any kind of analysis for being so young.