The Financial Brand made a great job reviewing and tracking the top 400 English-speaking retail banks on Twitter. They compiled a list that represents nearly all such banks, with a handful of exceptions here and there.

I took the liberty of copying a part of their text into this post, follow the link below for the whole thing. It´s very interesting!

Here’s the rest of the stats for the 400 retail banks on Twitter and how they all break down.

Followers
Banks with less than 200 followers: 188 (47%)
Banks with more than 1,000 followers: 40 (19.8%)
Banks with more than 5,000 followers: 27 (6.8%)
Number of people following banks on Twitter: 713,744
(246,334 or 35% of which are attributed to AmEx, arguably not a retail bank)
Average number of followers per bank: 1,784
Mean number of followers: 222

Following
Banks following no one: 43 (10.8%)
Banks following 10 people or less: 102 (25.5%)
Banks following fewer than 200 people: 275 (68.8%)
Banks following 1,000 people or more: 40 (10%)
Mean number of people followed: 64
Tweets

Frequency
Banks who tweeted in the last 2 hours: 78 (19.5%)
Banks who tweeted in the last 24 hours: 166 (41.5%)
Banks who tweeted in the last week: 238 (59.5%)
Banks who haven’t tweeted in a month or more: 121 (30.3%)
Banks who haven’t tweeted in over a year: 65 (16.3%)
Banks who have never sent a tweet: 15 (3.8%)

Read the whole thing at http://thefinancialbrand.com/19914/400-retail-banks-on-twitter/