Why do some mutual funds have 200+ positions?

I've been looking at some Long/Short Mutual Fund exposure (mostly for knowledge building) and I've noticed many mutual funds where they have 200+ positions (this example has 251 long positions and 170 short which too me just sounds absurd). Is this an effort to mimic the benchmark exposure but at a smaller scale? I can't imagine a small team can conduct fee-worthy research with a direct investable universe of 350+ stocks... submitted by /u/Minute-Buffalo-6678 [link] [comments]