** U.S. truckload services provider's shares PTSI.O drop
as much as 5.4% to $64.30, set for their worst day in almost
three weeks
** Q3 profit falls 50.5% to $4.6 mln, hurt by an ongoing
workers' strike at General Motors Co GM.N , its biggest
customer, which provides 20% of its annual sales urn:newsml:reuters.com:*:nGNXbkyMtd
** Chairman Daniel Cushman says co's operations took a
"blow" from the strike in Q3 as its "largest customer
essentially shut down operations without warning"
** "The strike is not good for us and we will not be at
optimum performance levels for as long as it lasts," he adds
** PTSI is among the first few companies in GM's supply
chain to outline the impact of the strike, which is in its fifth
week now
** Earlier this month, Canadian auto parts maker Linamar
Corp LNR.TO estimated a profit hit of up to C$1 mln per day
due to a fall in orders from customer GM urn:newsml:reuters.com:*:nL3N26O2WB
** Stock up 72.6% this year, as of last close
(Reporting by Ankit Ajmera in Bengaluru)
((ankit.ajmera@thomsonreuters.com))