Meaning "ones" in a sentence.

[andrew495]

Hi everyone!

I'm a bit confused about the meaning of the word "ones" in the following sentence, therefore I can't understand the extra clause that describes the word "ones".

Here is the sentence:

In a couple of instances, I stumbled in assessing either the fidelity or ability of incumbent managers or ones I later put in place.

Would you please help me to understand it?

[STRIKE]Thx,[/STRIKE]Thanks for your answers!

 

[Rover_KE]

What is the source of your quoted sentence?

Thx is not a word. Please correct it and delete the comma.

 

[andrew495]

Here is the context where the sentence comes.

A few, however – these are serious blunders I made in my job of capital allocation – produce very poor
returns. In most cases, I was wrong when I originally sized up the economic characteristics of these companies or
the industries in which they operate, and we are now paying the price for my misjudgments. In a couple of
instances, I stumbled in assessing either the fidelity or ability of incumbent managers or ones I later put in place.
I will commit more errors; you can count on that. Fortunately, Charlie – never bashful – is around to say “no” to
my worst ideas.

Thanks

 

[teechar]

I assume it refers to "managers."