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Top Insider Trades: Larry Page Sells Google Stock and Berkshire Hathaway Buys More DaVita HealthCare


Plus, sales at Kellogg, Wells Fargo, and Mead Johnson, as well as several pharmaceutical purchases.

In a victory for common sense, the trading behavior of company executives, directors, and large shareholders in the stocks of firms they're registered "insiders" at have been proven profitable to monitor by both academic studies and (more importantly) the experience of your fellow professional investors.

Below are lists of the top 10 mainly open-market insider purchases and sales filed at the Securities and Exchange Commission Tuesday, January 15, 2013 as ranked by dollar value.

Please note, however, that these are factual lists, not buy and sell recommendations. Dollar value is only one metric to assess the importance of an insider transaction, and, frankly, often not even the most important metric that determines if an insider transaction is significant.

In purchases, Berkshire Hathaway (NYSE:BRK.A) bought $19,663,822 worth of stock in kidney care company DaVita HealthCare (NYSE:DVA). Berkshire Hathaway now owns about 15% of DaVita. The biotech-focused long-short hedge fund Perceptive Advisors bought $12,857,220 worth of stock in Aegerion Pharmaceuticals (NASDAQ:AEGR), of which it is a beneficiary owner. Aegerion specializes in the development and commercialization of therapies for patients with rare diseases. Thomas Tisch, a director of Synageva BioPharma (NASDAQ:GEVA), bought $999,984 worth of company stock. Synageva, like Aegerion, develops novel treatments for rare diseases. Phillip Frost, Chairman and CEO of pharmaceutical and diagnostics company Opko Health (NYSE:OPK), again bought stock, today for $112,659.

Google (NASDAQ:GOOG) led insider sales, with Co-Founder and CEO Larry Page selling $15,178,162 worth of company stock. The W.K. Kellogg Foundation Trust, the seventh largest philanthropic foundation in the US, sold $4,111,472 worth of Kellogg (NYSE:K) stock. Michael Heid, Executive Vice President Wells Fargo (NYSE:WFC), and President of the company's Wells Fargo Home Mortgage division, sold $1,831,862 worth of company stock. Stephen Golsby, President and CEO of Mead Johnson (NYSE:MJN), sold $692,541 worth of company stock. The company, once a holding of Bristol-Myers Squibb (NYSE:BMY), is a major manufacturer of infant formula with its flagship brand Enfamil.

At, we find new investment ideas just about every day using these and more intricate insider screens to determine where we should focus our subsequent fundamental and technical analysis. And while stocks don't (or shouldn't) move up or down based on insider activity alone, insiders tend to be good indicators of when real stock-moving events like earnings surprises, corporate actions, and new products may be in the offing.

Source: | Key to Insider Title and Trans Type Codes

Source: | Key to Insider Title and Trans Type Codes

Editor's note: Jonathan Moreland is the founder of Insider Insights and author of "Profit From Legal Insider Trading."
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