"Since most individual holders hold through street
Post# of 72440
"As of December 31, 2013, there were 4,819 stockholders of record of our Class A common stock, and the closing price of our Class A common stock was $54.65 per share as reported on the NASDAQ Global Select Market. Because many of our shares of Class A common stock are held by brokers and other institutions on behalf of stockholders, we are unable to estimate the total number of stockholders represented by these record holders. As of December 31, 2013, there were 102 stockholders of record of our Class B common stock"
https://www.quora.com/Is-there-a-way-to-know-...s-in-total