Pfizer's headquarters in Finland. Image source: Wikimedia Commons (by Lauri Silvennoinen).

There are few companies in the United States that can match the legacy and success of Pfizer (PFE 2.40%), one of the nation's leading pharmaceutical companies. It's likely for this reason that Pfizer's stock is a favorite among money managers and investors. Its top five shareholders control $35.9 billion worth of its outstanding common stock, equating to an ownership interest of 17.5%.

Even though this is a sizable stake, it's relatively conservative on a percentage basis compared to other leading companies, such as AIG (AIG 1.70%) and Boeing (BA -0.24%):

  • AIG's five biggest shareholders control 19.9% of the insurance company's outstanding stock. That equates to $14.3 billion worth of AIG shares.
  • Boeing's five biggest stockholders own 29.4% of its stock. The total dollar value of their combined stake translates into $26.1 billion worth of Boeing shares.

So, who are Pfizer's five biggest shareholders? You can find the answer to this question in the brief slideshow below.

Data in the slideshow, as well as the ownership data about AIG and Boeing, was sourced from Yahoo! Finance on November 16, 2015. Slideshow image source: iStock/Thinkstock.