I can not understand a sentence with "zoo of the new" [closed]

Solution 1:

The usage reflects the impact of a book and television series “The Shock of the New” by Robert Hughes:

Hughes went on to make acclaimed films about Goya and Gaudi, as well as the series American Visions, his personal view of American art. In 2004 he made The New Shock of the New, which looked at developments since 1980. The Shock of the New continues to be influential: Hughes died in 2012 but not before The Guardian named the spin-off book – which is still in print - among its 100 greatest non-fiction books.

BBC

The phrase “of the new” thus acquired overtones of formative influence, of seeing things in a new way, of challenging convention.

In your example, the phrase is applied to the collection {described as a zoo} of possible statistical ideas relevant to the links between claims and stocks. The author is hinting at the novelty and innovative importance of these ideas.