NEW YORK ( TheStreet) -- This week Warren Buffett and Berkshire Hathaway ( BRK.A) were making headlines nearly every day.

Here are some of the most important Buffett stories from the past week.

On Monday, market commentators buzzed after Bloomberg reported that certain Berkshire Hathaway notes were being seen by the bond market as safer investments than U.S. government bonds with similar maturities. According to the report, Berkshire two-year notes were yielding 3.5 basis points lower than comparative government bonds.

Berkshire was not the only company found to be trading at lower yields than Uncle Sam. According to the report, Procter & Gamble ( PG), Johnson & Johnson ( JNJ) and Lowe's ( LOW) debt were also selling at premiums compared to similar government bonds.

Ultimately, holding U.S. government's debt remains a theoretically risk-free investment (ignoring inflation) because of the government's ability to turn on the printing press. However, the report highlights the growing risks that are associated with the nation's ballooning budget deficit level.

Berkshire's Liquor License

When Warren Buffett announced his plan to purchase Burlington Northern Santa Fe ( BNI) toward the close of 2009, many analysts and market commentators questioned the move, speculating that it could be the financier's last hurrah. However, Buffett proved this week he is still very much in a deal-making mood.

At the start of the week Kahn Ventures, a distributor of wine and liquor in Georgia and North Carolina, became Berkshire Hathaway's newest acquisition. The deal was made through the Berkshire Hathaway subsidiary, McLane.

This is not the first time that Buffett has gotten into the alcohol business. Berkshire Hathaway held shares of Anheuser-Busch ( BUD) until InBev purchased the firm for cash in 2008. In a statement following the Kahn deal, Buffett hinted at the possibility of further expanding into the distribution business.

Buffett Slashes Stake in Moody's

In what has become a common occurrence, Warren Buffett's company reduced its position again in Moody's ( MCO). According to the SEC filing, the most recent sale amounted to 815,905 shares of the troubled ratings agency. Berkshire still holds close to 31 million shares, or 13% of the company's shares. This is down considerably from the 48 million shares held at the end of March last year.

Instead of taking the vocal approach to chastising this agency, whose improper debt ratings served as a major driver leading up to the global financial crisis, Buffett has expressed his disapproval through the habitual sale of his MCO shares throughout 2009 and the first part of this year. It will be interesting to see if the investor continues to dump shares in this manner until he has rid himself of the company completely.

Posco Gets the Kraft Treatment

Buffett spoke out against South Korean steelmaker Posco's ( PKX) plan to acquire shipbuilder Daewoo Shipbuilding & Marine Engineering. In an interview, Posco explained that shareholders, including Berkshire Hathaway, have urged the steelmaker to conduct a thorough review of the bid before proceeding.

Buffett expressed similar concerns at the end of 2009 when he expressed his disapproval toward Kraft's ( KFT) decision to buy U.K. candy-maker Cadbury. The Oracle's concerns stemmed from the belief that the proposed deal required that Kraft issue an excessive number of shares to fund the bid.

Warren watchers and Posco investors will want to keep an eye on how this deal progresses. Buffett and other prominent shareholders are worried that Posco's plan to buy the shipbuilder may be coming at a time when the shipbuilding industry is in the midst of a prolonged downturn.

Did Buffett's actions this week affect any of your investment decisions? Feel free to leave a comment below.

-- Written by Don Dion in Williamstown, Mass.
At the time of publication, Dion was not long any of the equities mentioned.

Don Dion is president and founder of Dion Money Management, a fee-based investment advisory firm to affluent individuals, families and nonprofit organizations, where he is responsible for setting investment policy, creating custom portfolios and overseeing the performance of client accounts. Founded in 1996 and based in Williamstown, Mass., Dion Money Management manages assets for clients in 49 states and 11 countries. Dion is a licensed attorney in Massachusetts and Maine and has more than 25 years' experience working in the financial markets, having founded and run two publicly traded companies before establishing Dion Money Management.

Dion also is publisher of the Fidelity Independent Adviser family of newsletters, which provides to a broad range of investors his commentary on the financial markets, with a specific emphasis on mutual funds and exchange-traded funds. With more than 100,000 subscribers in the U.S. and 29 other countries, Fidelity Independent Adviser publishes six monthly newsletters and three weekly newsletters. Its flagship publication, Fidelity Independent Adviser, has been published monthly for 11 years and reaches 40,000 subscribers.