Online trading firm IG Group saw shares slump by as much as a quarter after it slashed its growth targets.

Shares in the FTSE 100 company dropped to their lowest level for more than a year after it was impacted by โ€œless supportive market conditionsโ€ in the third quarter of 2026.

As a result, London-based IG told investors it expects total revenues to have grown by a โ€œmid-single-digit per centโ€ for 2026, having previously guided to growth of 10% and 15%.

It said it expects to report total revenues of around ยฃ240 million for the three months to end of September, down 14% year on year.

The drop was linked to a slump in revenue retention across its โ€œover-the-counterโ€ (OTC) division, which fell to 70%, having averaged at around 80% since the second half of 2025.

โ€œThe board remains confident that these measures will structurally increase OTC revenue retention over the medium to long term, albeit with greater expected short-term variability,โ€ the company said.

IG, which also owns the Freetrade brand, said organic first trades were however up 25% year on year.

Breon Corcoran, chief executive of IG, said: โ€œGrowth in first trades and active customers remained strong in Q3 2026.

โ€œLower Q3 revenue reflected reduced OTC (over the counter) revenue retention in less supportive market conditions, and I remain confident in meeting our medium-term guidance.โ€

Shares in the company were down 22.4% at 993p on Friday morning.