The tap root will probably draw a lot of resources searching its new limits the first few days.
Did the rootball disintegrate or otherwise get roughed up? if not, probably not shock.
I've yet to see transplant shock after a couple hundred transplants or more. This might be a small sample,. but clearly not too common, even so. I even had a slightly too dry seedling pot where the substrate fall apart in my hand as i transplanted.. thing kept kicking like nothing happened, lol. Think i got lucky, there.
The sun is more likely something to consider. If coming from artificial, it's not going to be happy under full brunt of sun. This may stunt it initially.