I hear that a lot, however they only have a single fundie as a "Sub", Capital Research and Management Company, part of the US-based Capital Group. The only other substantial holder is their MD Scott Didier's investment company JLRX Investments Pty Ltd. Mind you with a market cap of around $1.7 to $1.8 Billion, 5% of JLG is around $88 million, so there could be plenty of fundies on the register with less than $88m worth of JLG who won't show up due to being under that 5% threshold for a "Sub".
I don't think they have a tight register however. There's plenty of liquidity. I'm thinking of adding this one to my Strawman portfolio on a pullback. They certainly have plenty of work at the moment, so I don't expect much of a pullback in the near term. Happy to have them in one of my real money portfolios at this point.

JLG CEO & MD, Scott Didier.

https://www.linkedin.com/company/johns-lyng-group/?originalSubdomain=au



National Retail Shop Fit-out Solutions - Johns Lyng Shopfit Services (jlshopfit.com.au)

https://investors.johnslyng.com.au/Investors/


NSW floods: How Johns Lyng Group is seeing profit in disaster recovery (smh.com.au) [24 July 2022]

https://johnslyng.com.au/regional-builders/

Brands - Johns Lyng Group

https://inside.strata.community/sca-vic-sponsor-spotlight-johns-lyng-strata-services/

Has Johns Lyng Group been seriously oversold following CEO’s 7.5% selldown? (marketindex.com.au) [10 October 2022]

"What 1.8m of rain looks like"
Johns Lyng Group has deployed one of its 'catastrophe rigs' to help Townsville battle floods - Stockhead [5 February 2019]

https://johnslyng.com.au/disaster-recovery/

https://johnslyng.com.au/insurance-builders/

https://jlcommercial.com.au/

Johns Lyng Group Volunteer Video - Victoria storm victims | VPA video production Melbourne (youtube.com) [27 January 2023]

https://johnslyng.com.au/brands/