Why 29Metals, BHP, Helia, and Rio Tinto shares are dropping today

Here's why these ASX shares are weighing on the market's performance on Thursday.

The S&P/ASX 200 Index (ASX: XJO) is fighting hard to stay in positive territory. In afternoon trade, the benchmark index is up 0.1% to 7,315.2 points.

Four ASX shares that have failed to follow the market higher today are listed below. Here's why they are dropping:

A man sits in despair at his computer with his hands either side of his head, staring into the screen with a pained and anguished look on his face, in a home office setting.

Image source: Getty Images

29Metals Ltd (ASX: 29M)

The 29Metals share price is down almost 6% to $1.45. Investors have been selling this copper miner's shares after it revealed that all production and non-essential activity has been suspended at Capricorn Copper following extremely heavy rainfall on 7 March. Management estimates that the suspension may continue for a period of up to three-to-four weeks.

BHP Group Ltd (ASX: BHP)

The BHP share price is down 2.5% to $46.51. This has been driven by the mining giant's shares trading ex-dividend this morning for its latest dividend. The Big Australian is paying a fully franked interim dividend of 130.6 cents per share. Eligible shareholders can look forward to receiving this on 30 March.

Helia Group Ltd (ASX: HLI)

The Helia share price has crashed 15% to $2.90. Helia, which is the new name of Genworth Mortgage Insurance, is also trading ex-dividend on Thursday. Last month, it declared total fully franked dividends of 41 cents per share. This comprises a final dividend of 14 cents per share and a special dividend of 27 cents per share. These will be paid to shareholders on 24 March.

Rio Tinto Ltd (ASX: RIO)

The Rio Tinto share price is down 2.5% to $121.67. This is also due to the miner's shares going ex-dividend on Thursday. Rio Tinto will be paying its 326.5 cents per share fully franked final dividend to eligible shareholders next month on 20 April.

Motley Fool contributor James Mickleboro has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

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