This is the 4383rd most frequent Dutch word.
cboe
The term "cboe" is not a Dutch word; it likely refers to the Chicago Board Options Exchange if encountered in English contexts.
'CBOE' here again is referencing the institution as a location, emphasizing its operational status.
Weet je of CBOE vandaag open is?
Do you know if CBOE is open today?
Here, 'CBOE' is used as a proper noun referring to the Chicago Board Options Exchange, a financial institution.
Ik werkte bij CBOE en leerde veel over opties.
I worked at CBOE and learned a lot about options.
In this sentence, 'CBOE' continues to be a proper noun representing the organization known for its financial trading platforms.