These companies have been the FTSE high-fliers and fallers since the referendum

Francesca Washtell
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FTSE 100 risers have included miners and technology firms since the referendum was held last month (Source: Getty)

With all that's happened since 23 June, it's hard to believe it's only been a month since the UK came out in droves to vote in the EU referendum.

While the FTSE 100 closed up 0.46 per cent yesterday in its fifth successive weekly advance, a number of companies on both the FTSE 100 and FTSE 250 indexes have been rocked in the post-Brexit vote market.

Here are the biggest FTSE risers and fallers since the referendum:

FTSE 100 biggest risers

Mining and technology stocks have been the outperformers on the FTSE 100 since 23 June.

Tech firm ARM Holdings' stock has risen 64.35 per cent, from 1,021p on 22 June to close at 1,678p yesterday - though this was driven by its sale to Japan-based SoftBank, which was agreed in mid-July.

Mining groups Fresnillo and Randgold Resources were the second and third highest risers in the last month, as their stocks rallied 50.58 per cent to 1,831p and 38.38 per cent to 8,850p respectively, according to Hargreaves Lansdown.

FTSE 250 risers

On the FTSE 250, the highest risers were also miners: Acacia Mining grew 66.87 per cent to 559p, while the Americas-focused silver and gold miner Hochschild was up 53.9 per cent to 232p and Centamin rose 51.53 per cent to 158.8p. This was driven in part by gold and silver prices, which have remained mostly buoyant since the referendum.

Read more: FTSE 250 approaches pre-referendum highs

Other notable risers on the FTSE 250 included "technology companies like Sophos Group and Micro Focus International, along with manufacturers Weir Group, Croda International and defence contractor Cobham", Michael Hewson, chief market analyst at CMC Markets said.

What goes up must come down... FTSE 100 biggest fallers

Since the referendum, easyJet has been the FTSE 100's largest faller as recent events in Turkey and France have hit consumer confidence.

The budget airline has also blamed a trading dip on the Brexit vote itself, saying this week in a trading statement that currency volatility since the referendum had also made travellers think twice about booking flights. Its share price has fallen 32.3 per cent to 1,027p.

"On a sector by sector basis, the worst performers one month on from last month's vote are house builders, banks and retailers that have borne the brunt," Hewson said.

Read more: Housebuilding shares are being hammered by Brexit

The second and third highest fallers on the FTSE 100 were housebuilders Barratts Developments, which slid 27.64 per cent to 411p, and Persimmon.

The house market has slowed since the referendum, with surveys suggesting asking prices have fallen over the past few weeks and completions have fallen year-on-year.

Persimmon's stock fell 23.39 per cent to 1,598p, though early in July the company was vocal in saying it is too early to judge what the effect of the referendum will be on housebuilding.

FTSE 250 biggest fallers

​On the FTSE 250, stocks at challenger banks Shawbrook and OneSavings Bank plummeted more than 40 per cent.

Shawbrook's stock fell 43.14 per cent to 167.5p, though the company's stock was hit on 28 June when it announced it would be processing an additional impairment charge of around £9m in the second quarter.

OneSavings Bank stock dropped 40.06 per cent to 202p. Retail bank Aldermore's stock also dived 33.38 per cent in the month, to 135.9p, while Virgin Money Holdings (the fifth biggest faller) dipped 32.03 per cent to 238.9p.

Also down more than 30 per cent were retail giants Sports Direct (down 31.78 per cent to 257.6p) and sofa stalwart DFS (down 28.13 per cent to 210.8p), while Crest Nicholson shares slid 30.67 per cent to 405.6p.

Sports Direct's fall has been exacerbated by the intense scrutiny placed on founder Mike Ashley this week to review working conditions at its Shirebrook warehouse, following an investigation by the former department of Business, Innovation and Skills.

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