As someone who has studied world religions intensively for the past 15 years of my life, and as someone who is currently pursuing another degree in Religious Studies, I always find it facinating to see who else has actually read some of the various Holy Books throughout our many religions.
I'm interested in academic religious studies too.
I've created a poll. I ask that you only check the ones of which you have read the ENTIRETY of - not just a few chapters. I mean front to back, cover to cover, etc.
That's the thing. I don't think that I've read any of the writings you listed straight through in their entirety.
I've read large portions of the Bible and the Quran, but never continuously cover-to-cover.
Right now, my interest is very much concentrated on the Pali canon. (I've been reading Piya Tan's sutta studies from Dharmafarer.) With the Pali canon, I wonder whether anyone on earth has ever read it cover-to-cover. (Assuming it had covers. It's a library of books that places like Thai monasteries often have in a bookcase.) They certainly haven't read it in English, since some parts of it are difficult to find in translation. The philosophically very important Kathavatthu only exists in a century old Pali Text Society translation as far as I know (I was recently given an e-copy) and another Abhidhamma book (the Yamaka) might still have no English translation even today (I'm not sure).
The Sutta Pitaka is the part of the Pali canon that non-monastic Buddhists are usually most often interested in reading, but it isn't organized as a chronological narrative or as a continuous doctrinal exposition. Instead, its discourses are arranged in its several books in different ways: according to their length, by how many items of doctrine they address, or very loosely by subject. So people reading the discourses tend to jump around and it's possible to group suttas in different ways and to read them in different orders.
The Quran is organized in order of surah length as well. Islam isn't really my thing, so I'm not sure whether Muslims have traditionally read it straight through or whether they read it more topically.