From: Ann Shumelda Okerson <[log in to unmask]>
Date: Thu, Feb 2, 2017 at 9:28 PM

Elsevier, a world-leading provider of scientific, technical and
medical information products and services, today announced the
acquisition of Plum Analytics from EBSCO Information Services, a
global information services company providing research and discovery
platforms and access to premium content. The acquisition will enable
Elsevier to significantly expand access to Plum Analytics' altmetrics
to more researchers and more institutions.

http://www.prnewswire.com/news-releases/elsevier-acquires-leading-altmetrics-provider-plum-analytics-612551193.html

And see also:

https://www.elsevier.com/connect/the-most-comprehensive-source-of-altmetrics-joins-elsevier-plum-analytics