Synthomer shares rebound 9% while 2025 net debt is four times market value
Synthomer plc jumped 9.26% to 86.10 pence on Thursday, a sharp bounce for the London-listed polymer maker after a bruising late-June run. Hargreaves Lansdown data showed the FTSE All Share up 1.51%, putting Synthomer’s outperformance at about 7.8 percentage points. The bigger number for equity holders is still debt. Synthomer’s 2025 net debt of £575.0 million was about 4.1 times Thursday’s market value of £141.16 million. The ratio uses the last confirmed net-debt figure and the latest market cap, so it is a rough gearing read, not a current balance-sheet update.