Diploma PLC stock price drops 3.5% as Trump tariff threat jars FTSE 100 mood
London, January 19, 2026, 13:08 GMT — Regular session
- Diploma’s stock dropped 3.5%, sliding to 5,488p by midday trading
- London and European stocks slip as Washington’s tariff threat weighs on markets
- Watch the tariff starting Feb. 1, then turn to Diploma’s half-year results set for May 19
Diploma PLC’s shares slid 3.5% to 5,487.8 pence by 1252 GMT on Monday, pulling back from last week’s 52-week high of 5,760 pence. The FTSE 100 firm, known for supplying seals, controls, and life sciences products, earns about 46% of its revenue in the US. (MarketScreener)
This slide stings since Diploma has leaned on a “steady growth” story paired with constant acquisition chatter—both now looking fragile as…
