As the year draws to a close, Business Roundtable-member CEOs have much to say in interviews, at forums, and in online commentaries. A good cross-section of what business leaders are thinking about the economy, their companies, and the future. Oil prices figured prominently.

First, let's start with the video compilation from CNBC's Squawkbox interviews with CEOs in town for BRT's Dec. 3 CEO Quarterly Meeting. Excerpts and highlights here.

Ellen Kullman of DuPont, a video interview by Fortune's Alan Murray at the Council on Foreign Relations, on global competitiveness and the "innovation imperative." From the transcript:

I've been with the company 26 years. Came mid-career, and fell in love with the company wandering around the laboratories, and understanding the science and how powerful the science is. And really have had a great time over the last 26 years connecting that science to the marketplace. So, we call ourselves a science company because chemistry is very important, but the most interesting things today are happening at the intersection of sciences, taking it to a nano scale, or adding biology to chemistry, and material science and engineering. Because science itself is interesting, but it's only relevant if you can take it to a scale at a cost that your customers then benefit from it. So, we -- we, you know, are very proud of our chemical heritage, but are moving forward because of where the most fundamental and exciting innovation is occurring today.

Kullman addresses many other issues of interest in her comments, including types of innovation, immigration policy, regulation, and fuel prices. 

Doug McMillon of Walmart, interviewed on the floor of a D.C. store by Charlie Rose, addressing a full range of retail and workforce issues. Bloomberg/BusinessWeek has excerpts here, and CBS News has a report:

The retail industry is undergoing a technology transformation and Walmart is playing catch up, scrambling to figure out the winning combination of brick-and-mortar stores and virtual ones.

[McMillon] said the key to winning customers today is having a combination of both.

"I think that's what the customer wants and therefore, yes. And it's the integration of how you put it all together that results in lowest prices, broadest assortment and customer service that is above their expectations," McMillon said. "That's the winning formula. And it's always been the winning formula."

Nick Akins of American Electric Power on Fox Business News discussing the energy landscape, which includes the consequences of federal regulation.

Doug Oberhelman of Caterpillar, Inc., on CNBC discussing oil prices, the global mining market, China, Russia and Cuba's potential. And from Bloomberg TV, "Caterpillar CEO Says Oil Decline Will Be Net Positive," with more observations about Cuba, as well.

Bob Greifeld, Nasdaq OMX Group CEO, discussing the dialogue between regulators, banks and exchanges on market structure in 2015. CNBC entitles the video segment, "Greifeld: US market deepest, fairest, most efficient." Also, "Luring high-profile IPOs to Nasdaq: Greifeld."

Larry Fink of BlackRock Inc., interviewed by Andrew Ross Sorkin on Dec. 11 at The New York Times' DealBook conference. Topics in the video interview include global oil market, long-term investment strategy, monetary and economic policy, shareholder activism and fiduciary obligations of asset owners and managers.

Finally, a lengthy feature in Women's Wear Daily, "Newsmaker of the Year: Terry J. Lundgren." He's Chairman and CEO of Macy's, Inc. Retail is ALWAYS changing.