The stock markets in the United States fluctuated and eventually ended the trading session down except the Russell 2000, up by 0.18%. Investors continue to review economic data and monitor a potential progress concerning Greece's debt discussions. Sign up for our free newsletter Yesterday, the equity markets climbed after the Institute for Supply Management reported that the U.S. manufacturing sector increased 1.3% to 52.8 % in May, a sign that the economy is improving. A separate report showed that consumer spending stalled in April. Today, the Department of Commerce reported that the new orders for manufactured goods declined 0.4% or $1.8 billion to $476.7 billion in April. The decline came after a 2.2% increase in March. A separate report showed that U.S. automobile industry is on track to achieving the fastest sales acceleration in more than nine years. The sales of General Motors climbed 3%, Fiat Chrysler rose 4%, Honda 1% and Subaru increased 12%. Later this week, the Department of Labor will release its report on unemployment claims and monthly non-farm payrolls data. Commenting on the market trends, Matt Maley, an equity strategist at Miller, Tabak & Co. told Bloomberg, "Yesterday was a microcosm of what we've seen for several months now -- big intraday swings, only to end up little changed." He added that investors will focus attention on "Friday's big employment number,: and noted that "there's a lot of indecision." According to him, "If the situation in Greece deteriorates, it leaves a lot of downside potential for the U.S. stock market." The head of the international Monetary Fund IMF and the EU leaders intensified their discussions regarding the fate of Greece, and how to prevent the country from defaulting. Prime Minister Alexis Tsipras said Greece submitted its proposals to break the deadlock. The Greek government said it could make its debt repayment to the IMF this month.