meaning of "stock" in this context

It was a pleasant evening; Charles found it remarkably so, but I
cannot tell why, unless the absence of Miss Terry, towards whom his
conscience reproaches him with being now perfectly indifferent, was a
relief to him. There were only twelve dances, of which I danced nine,
and was merely prevented from dancing the rest by the want of a
partner. We began at ten, supped at one, and were at Deane before
five. There were but fifty people in the room; very few families
indeed from our side of the county, and not many more from the other.
My partners were the two St. Johns, Hooper, Holder, and very
prodigious Mr. Mathew, with whom I called the last, and whom I liked
the best of my little stock.

This is from Jane Austen’s letter to her sister Cassandra.

What does stock mean in this context?