EMC Corp. (NYSE:EMC)

The financial data reveals several noteworthy trends and fluctuations in the company's operating income, revenues, and operating profit margin over the period analyzed.

Operating Income (Loss)

The operating income exhibits some variability throughout the years. It initially declines from 1,480 million US dollars in 2005 to 1,208 million US dollars in 2006, then increases sharply in 2007 to 1,739 million. This is followed by fluctuations around the 1,400–1,600 million range until 2009. From 2009 onward, the operating income rises significantly, peaking in 2013 at 4,150 million US dollars. Afterward, it decreases in 2014 and more substantially in 2015, falling to 2,841 million US dollars. This pattern suggests strong growth phases interrupted by periods of decline or consolidation.

Revenues

Revenues show a consistent upward trend throughout the entire period, increasing from 9,664 million US dollars in 2005 to 24,704 million US dollars in 2015. The growth appears steady with no years of decline, indicating robust sales performance and market expansion over the decade. The rate of increase remains relatively stable, although growth accelerates somewhat after 2009.

Operating Profit Margin

The operating profit margin fluctuates notably over the years. It dips from 15.32% in 2005 to a low of 10.08% in 2009. Subsequently, it recovers and peaks at 18.26% in 2012, reflecting improved operational efficiency or favorable cost management during that period. However, the margin then declines again to 11.5% by 2015, indicating reduced profitability relative to revenue in the final years analyzed.

In summary, while revenues steadily increase throughout the period, the operating income and profit margin display more volatile behavior, with periods of strong growth interspersed with contractions. The peak profitability years around 2011 to 2013 suggest improved operational leverage, but the decline in the last two years analyzed points to challenges in sustaining this performance level.