I was just trying to get an angle on how many ‘loose’ shares...

I was just trying to get an angle on how many ‘loose’ shares there are looking at major shareholders .
This image below from The Australian https://markets.theaustralian.com.au/shares/ZEN/zenithenergy-limited has no date but according to Commsec it’s now a bit different : diagram below does not show ;
Tiga/Thornley with roughly 15.31% and Microequities Asset Management 6.18% or Westoz (31 May 7.75%)
Adding those uses up 29.24% of the section marked ‘other’....

Which ties in nicely with my current question of the moment .
Can anyone tell me what normally happens when a stock is really tightly held by institutions .
Cheers