Report sends Arconic lower

Arconic shares plunged to a nearly five-month low Monday after a Reuters news report raised questions about why it supplied combustible cladding for use in London’s Grenfell Tower.

Grenfell Tower was engulfed in an inferno June 14 which left at least 79 people dead.

Arconic said in a statement that the cladding used on the tower would no longer be sold for use in high-rise buildings.

The cladding — panels used to insulate buildings and improve their appearance — may have been a factor in rapidly spreading the blaze. Arconic’s stock dropped as low as $22.65 a share in early trading Monday following the report. It closed down 6 perecent at $24.01.