4% of Bitcoin addresses hold 97% of all Bitcoin.pic.twitter.com/R4SnN3PhKM
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
Most of the top addresses are custodial services (exchanges & such) though. Not ideal in terms of decentralization/resilience, but I don't think Bitcoin's distribution is as lopsided as this charts implies.
A dormant address with $800m with of bitcoin just started trading again. Sent $70 million worth to an exchange
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.