The S&P/ASX 200 Index (ASX: XJO) is out of form on Monday. In afternoon trade, the benchmark index is down 0.5% to 8,573.9 points.
Four ASX shares that are falling more than most today are listed below. Here's why they are dropping:

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Regis Resources Ltd (ASX: RRL)
The Regis Resources share price is down 9% to $7.00. Investors have been selling this gold miner's shares following a pullback in the gold price. Traders have been selling gold amid concerns that sky-high oil prices could lead to higher inflation and force central banks to hike interest rates. It isn't just Regis Resources shares that are falling today. The S&P/ASX All Ordinaries Gold index is down 4.2% at the time of writing.
Strike Energy Ltd (ASX: STX)
The Strike Energy share price is down 3% to 10.7 cents. This morning, the energy company advised that the Western Australian Economic Regulation Authority (ERA) has finalised its Determination for the Benchmark Reserve Capacity Price (BRCP) for the 2028/29 Capacity Year at $488,500 per MW per annum. While this is a 35% increase on the 2027/28 benchmark of $360,700 per MW per year, it seems that some investors were expecting an even larger increase.
Telix Pharmaceuticals Ltd (ASX: TLX)
The Telix Pharmaceuticals share price is down 3% to $10.96. This is despite the radiopharmaceuticals company revealing that it was optimistic that the resubmission of a new drug application (NDA) for its brain cancer imaging candidate TLX101-Px would be approved by the U.S. Food and Drug Administration (FDA). Telix's chief medical officer, Dr David N. Cade, said: "We appreciate the FDA's recognition of the critical unmet need to improve the diagnosis and management of glioma, particularly in the posttreatment setting. Our resubmission is supported by an extensive and compelling data set – particularly so for an orphan indication. We are grateful to our global clinical collaborators, who share our commitment to ensuring patients in the U.S. can benefit from this important patient management tool."
Virgin Australia Holdings Ltd (ASX: VGN)
The Virgin Australia share price is down 2.5% to $2.66. This may have been driven by concerns that rising oil prices could weigh on the profitability of the airline. Virgin Australia has also been struggling with its flights through to the Middle East with Qatar Airways experiencing consistent cancellations. The company's shares are now down almost 20% since this time last month.