Altus Investment Advisory Reduces Duoback Stake by 2.72%p to 11.37% (Simple Investment Purpose)


  • The combined stake of the reporter (Altus Investment Advisory) and 10 specially related persons in Duoback decreased from 14.09% to 11.37%, a reduction of 2.72 percentage points.
  • The number of shares decreased by 325,848, due to on-market trading and expiration of discretionary account contracts.
  • The holding purpose is simple investment, not for influencing management rights.
ADVERTISEMENT (250px+)

KOSDAQ Filing Information


  • Filing: Report on Large Shareholding (Short Form)
  • Company: DUOBACK (073190)
  • Submission: Altus Investment Advisory
  • Receipt: 05-19-2026