Cornerstone Financial Management LLC acquired a new position in shares of Caterpillar during the fourth quarter valued at about $32,000. Finally, Monetary Solutions Ltd bought a new stake in shares of Caterpillar during the fourth quarter worth about $35,000. Get Caterpillar alerts:Caterpillar Trading Down 1.5%Shares of CAT stock opened at $844.52 on Friday. Also, insider Denise C. Johnson sold 12,605 shares of Caterpillar stock in a transaction dated Thursday, May 14th. Insiders sold 35,444 shares of company stock worth $32,335,679 in the last quarter.