You can actually go back farther than 2013 for job cuts. They used to have the annual "trimming of the fat" (i.e. Laying off low performing employees), however after the financial crisis in 2008 they have had frequent layoffs.
For a while in 2009 layoffs occurred on a weekly basis. After that, State Street has consistently laid off employees on a monthly basis in 2009, 2010, 2011, 2012, 2013, 2014, 2015, and now 2016.
This will never end. Everyone has a number...it's only a matter of time before you get a tap on the shoulder. If you make the most money on your team, you are most likely the one to be cut.
And, honestly, a large number of managers are keeping their fingers crossed that they will finally be on the list. (Myself included) we have put up with so much work and stress we don't want to let the company off easy and leave on our own, we want to be paid to leave.
The place is a sweat shop, plain and simple. The misery and stress is at every level, no one is immune, with the exception of the executives.