Institutional investors purchased a net $1.5 million shares of STMP during the quarter ended September 2015, and now own 92.63% of the total float, a percentage that is typical for companies in the Internet Software/Services industry.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
THE VANGUARD GROUP, INC. Bought 268.2 Thousand shares of Stamps.com Inc