Frankie,
A lot of this information, at least for the US and UK arm of the WTS is available as a matter of public record and has been posted on this site before. We know for example that the WTS 'turns over' around $900 million a year in the US, and around $40 million in the ISBA portion of its operations in the UK. This is what is donated, or earned from stock market, bond and other investments. Their other assets are not included in this figure.
What we have never seen is a figure that takes into account all the thousands of Kingdom Halls that in practical reality, the WTS owns. This would add further billions to the real estate that they already own in Brooklyn, Patterson and all the registered branches around the globe.
I noted with interest this week that the Vatican has actually made a profit on its stock-market investments this year, for the first time during the past few years.The church acknowledges that its stock portfolio is worth around $1 billion. I was rather surprised at how small their portfolio is, though this just speaks of course of the Vatican State and does not include church assets worldwide. It would be comparable to WTS headquarters in Brooklyn.
In ratio to its membership, the WTS is an extremely wealthy organization and would not look at all embarrassed financiall compared to the Vatican State.
HS