BMO Capital Markets analystJohn P. McNulty downgraded DuPont de Nemours Inc (NYSE:DD) to Market Perform (from Outperform) and at a lowered price target of $72 (from $80). Yesterday, DuPont reported preliminary fourth-quarter net sales of ~$2.90 billion (vs. consensus of $3 billion) and adjusted EPS of $0.85 – $0.87 (vs. $0.85 estimate). DuPont expects first-quarter net sales of around $2.8 billion (vs. $3.04 billion estimate) and adjusted EPS of about $0.63 – $0.65 ($0.88 estimate). The analyst says the first quarter is likely the bottom for their earnings, with the implied guidance for the se…