How to fight against being pigeonholed ?

I was researcher/trader in a multistrat pod that got shut down recently (for cost and growth purposes). The firm kept me but instead of being recycled in another pod, I got sent in the central execution team.

It’s though because I feel it’s almost like getting fired, and it’s hard to believe the firm still believes in me. I think I still have a lot of potential and would like to be a PM one day.

I don’t think I have any growth opportunities in this role, but at the same time it’s hard to move. What would you guys suggest ?

PS : I also feel my career is making less and less sense as never really specialised on something.