"The Lowy family's involvement with professional football appears to have all-but ended after selling off their last remaining stake in Sydney FC to the club's chairman, Scott Barlow and his father in law, David Traktovenko.

Having once been the majority owner of Sydney FC in its infancy with a controlling stake of more than 70 per-cent, Frank Lowy has ended his 15-year relationship with the club after the Lowy Family Group sold its final 10 per-cent share of the club to Strada Investments, owned by Barlow and Traktovenko."

https://www.smh.com.au/sport/soccer/lowy-family-sells-remaining-shares-of-sydney-fc-to-club-chairman-20190905-p52oe2.html

End of an era.

Also confirms that any SFC win during the Lowy era is compromised :)

Just like when they pulled out Hakoah out of the NSL, if their is nothing in it for them then they don't want anything to do with it.  

Their family's involvement in Australian football over the decades has zero to do with any altruistic leanings towards the betterment of the game rather than a desire to forward their business interests.  

Has he sold his shares in WSW through their partner companies as well?

• Aquarius Equity – which is co-owned by Glenn Duncan of Western Sydney Wanderers: 0.5%

Lowy is still involved in Australian football through Aquarius Equity in Sydney 0.5% and Wanderers stake, I don't know the percentage.