The S&P/ASX 200 Index (ASX: XJO) is having a subdued session on Tuesday. In afternoon trade, the benchmark index is down 0.25% to 8,932.9 points.
Four ASX shares that are not letting that hold them back today are listed below. Here's why they are rising:

Image source: Getty Images
Artrya Ltd (ASX: AYA)
The Artrya share price is up over 11% to $4.65. This appears to have been driven by a bullish broker note out of Bell Potter this morning. According to the note, the broker has initiated coverage on the medical technology company's shares with a buy rating and $6.10 price target. It said: "AYA's unique offering creates an opportunity to achieve rapid growth and a material share of c.4.4m annual CCTA scans in the US market, growing at a CAGR of c.6.2%. AYA has three foundation customers in the US that should deliver c.15k scans annually by FY27. Through the SAPPHIRE study group, AYA has created a warm pipeline of six potential customers and c.400k annual scans that could generate c.10% market share and c.A$450m in annual revenue over the next decade. We expect AYA to reach EBITDA breakeven in FY28."
Cleanaway Waste Management Ltd (ASX: CWY)
The Cleanaway share price is up 3% to $2.39. This follows the release of the waste management company's investor day update. Cleanaway unveiled its new Blueprint 2030 2.0 strategy, which is built around three pillars. These are delivering customer value, optimising its branch network, and leveraging advanced ways of working through digital and data capabilities. This includes a major upgrade to sales processes, with a centralised One Sales Engine model that is designed to lift customer retention and cross-sell rates.
DroneShield Ltd (ASX: DRO)
The DroneShield share price is up almost 8% to $3.89. Investors may have been buying the counter-drone technology company's shares due to concerns that the US and Iran could fail to sign a peace deal before the ceasefire agreement ends. If tensions flare up again in the Middle East, it could lead to increased demand for DroneShield's suite of products.
Nuix Ltd (ASX: NXL)
The Nuix share price is up 4.5% to $1.32. This follows news that the investigative analytics and intelligence software provider has completed the $27 million acquisition of Linkurious SAS following Foreign Direct Investment (FDI) approval in France. Linkurious provides technology that allows customers to visually explore and investigate graph data, to detect patterns of interest and investigate alerts. Incorporating Annualised Contract Value (ACV) associated with Linkurious, Nuix advises that it now expects full year ACV to be in the range $252 million to $272 million.