File this one under “Shorting is easy”, pleasehttps://twitter.com/lhamtil/status/1392841051577200642 …
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I remember something about this kind of thing slightly messing with borrow/basis on R2K ETF's and futures though
The previous head of Norway’s sovereign wealth fund was into this. I believe it was Yngwie Malmsteen 
I used to do this as a training exercise for summer interns on my desk: Pick a pre-existing index - country, sector, thematic, factor, etc - and remove the "worst" 10% of the names (fundamentally, systematic, whatever) and see if the new index outperforms over the summer.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.