Deep Yellow is trading at A$0.74, down 5.10%, with no new company announcement or reliable report identified that directly explains the October 29 decline.
- The latest quarterly update reiterated that weak equity-market conditions prevent a Tumas final investment decision in Q4 2026; cash was A$144.7 million. This is background, not an established cause.
- The Tumas delay was disclosed earlier, and shares rose on October 28, so it is not a confirmed explanation for the subsequent drop.