The buy-out comes 16 months after the group were given a two-year exclusivity period to purchase the Midlands outfit.
TTA, who are controlled by Hong Kong businessman Paul Suen, now hold approximately 50.64 per cent of Birmingham International Holdings Limited's shares.
A Birmingham statement read: "The club's parent company, Birmingham International Holdings Limited (BIHL), has resumed trading on the Hong Kong Stock Exchange and is now in the expert hands of Trillion Trophy Asia Limited (TTA).
"It means that, as a club, we have new owners - and we welcome all at TTA into the Blues family and we look forward to exciting times ahead at St. Andrew's under their guidance and with their backing."
GETTY
Carson Yeung (right) owned Birmingham for seven years
TTA's buyout ends Carson Yeung's seven-year ownership of the club which saw them win the League Cup in 2011 but also relegated from the Premier League the same year.
Gary Rowett's side are currently sixth in the Championship table and host Rotherham on Tuesday.
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