I would appreciate any opinions, thanks in advance.
How many requisitions can one recruiter work on and realize success?
Define success first...
Then all you need is one requisition. One candidate + one offer accepted = success.
Still not quite getting what you are driving at with your original question, sorry.
Gotcha..it depends on how organized they are, if they are good at time management, how well they understand the position they are recruiting for, if they understand the industry they are recruiting in, if they are good at research ( IE finding suitable companies to penetrate as a source, etc.. also, are they willing to do research on their own time, and not prime " reaching out to candidates and clients " time..
Also, one search for a senior management type that must be a left handed albino who is half irish with X certifications and X degree and be located in X city because the client "doesn't do relo's" is different than 5 searches for RPG programmers.. way different.
Are you asking because you are determining what is an acceptable metric of success for an office full of agency recruiters, or are you wondering about how many clients you personally need to have in your solo practice in order to consider yourself successful?
I would say more is better..maybe 6 - 10 at any given time, because you"ll always have ones that evaporate for no reason..or a good reason, but you'll always have ones that go away.
Hope I am being useful with my replies.