We know the market and its dynamics
Explanation:
This is the way I would translate this sentence.
The term market is derived from economics. In this field, movements in the markets (such as consumer confidence and changes in demand and supply for a specific product) are often referred to as "dynamics". When we look at "wat er speelt", an informal way of saying in Dutch that one possesses insider knowledge on behavior of its agents, it is a term that can be applied broadly. This term encompasses not only the meaning of "the movements of the market forces of demand and supply", but also the sentiment of its agents and future trends.
From a technical and semantic perspective, I would use "dynamics" rather than an informal term that might translate the syntax better, but not its intention.
Example sentence(s):- the forces which stimulate development or change within a system or process.
Reference: http://www.askoxford.com/concise_oed/dynamics?view=uk
| Melvin Tjon Akon
Netherlands
Local time: 06:41
Works in field
Native speaker of:  Dutch
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The translation workplace 
peer agreement (net): +1