In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on course to start the week with a small decline. At the time of writing, the benchmark index is down 0.2% to 7,057 points.
Four ASX shares that are falling more than most today are listed below. Here's why they are dropping:
Atlas Arteria Group (ASX: ALX)
The Atlas Arteria share price is down 3.5% to $5.73. This has been driven by the toll road company's shares going ex-dividend on Monday. Eligible shareholders can look forward to receiving Atlas Arteria's 20 cents per share dividend on 5 October.
Brainchip Holdings Ltd (ASX: BRN)
The Brainchip share price is down almost 8% to a new multi-year low of 18 cents. The struggling semiconductor company's shares have now lost close to half of their value since this time last month. Investors appear to believe that Brainchip's new Akida 2.0 offering will be dead on arrival because of a recent launch by Intel and intense competition from the likes of trillion-dollar company Nvidia. Capital raising concerns also continue to weigh on sentiment.
Pilbara Minerals Ltd (ASX: PLS)
The Pilbara Minerals share price is down 4% to $4.08. This is despite there being no news out of the lithium miner today. However, it is worth noting that a number of ASX lithium shares are trading lower on Monday.
Qantas Airways Limited (ASX: QAN)
The Qantas Airways share price is down almost 2% to $5.22. This follows the release of the airline operator's market update this morning. Qantas warned of a material increase in investment in customer improvements and the impact of elevated fuel prices. In respect to the former, a total of $230 million will be invested in addressing a number of customer pain points. As for the latter, higher fuel prices are expected to lead to an additional $200 million in costs during the first half.