* H1 core profit up 81 pct to 21.7 mln stg
* H1 assets 14.7 bln stg to end-September
* October stock slide sees assets fall 7.5 pct (Adds detail from statement, CEO quote, bullet points)
By Simon Jessop
LONDON, Nov 26 (Reuters) - British asset manager Polar Capital said total assets fell 7.5 percent in October on the back of a broad stock market selloff, taking the shine off a jump in half-year profit.
Polar, like many fund managers, was hit hard by a tech-led slide in equity values as a gradual tightening in central bank monetary policy and rising interest rates in the United States crimped investor demand.
The MSCI World index, a broad gauge of global stocks, fell 7.4 percent in October.
Assets rose to 14.7 billion pounds from 12 billion pounds in the six months to end-September, helping Polar post an 81 percent year-on-year jump in core profit and interim dividend of 8 pence, but had fallen to 13.6 billion by the end of October.
“While we have had a highly satisfactory first six months, there is no doubt that we will encounter more volatile markets and a reduction in risk appetite by investors,” Polar Chief Executive Gavin Rochussen said. (Reporting by Simon Jessop. Editing by Ben Martin.)