Investing for Professionals

As a professional investor, at what point would you consider trimming a highly successful investment? Forty % of the portfolio? 50 %? Never question mark. Is it purely driven by the opportunity of other stocks? Are both needed? Question bark. For me, as an individual, i would, you know, if i liked it and all that, i wouldn't trim,. But when investing for other people, there's a few factors to keep in mind. People get worked hrough about that, but you should know.