Robusta coffee futures on ICE hit a four-year peak on Monday on tightening supplies.
* November robusta coffee LRCc2closed up 1.4% to $2,087 a tonne, having set a four-year high of $2,094.
* Dealers said the wide price discount for robusta versus arabica is tempting roasters to buy the bean instead of its pricier counterpart.
* A strict coronavirus lockdown in top robusta producer Vietnam coupled with shipping delays is also boosting prices.
* December arabica coffee KCc2 closed down 0.7% at $1.93 per lb on Friday, having gained 0.4% on the week.
* Speculators raised their net long position in ICE arabica futures in the week to Aug. 31 by 3,176 contracts to 30,644.
* Rabobank said dry and hot weather in top arabica producer Brazil could mean a critical delay to coffee crop flowering.