• Bletchley Indexes
  • Home
  • Methodology
  • Updates
  • About
  • Contact
  • Blog
  • Updates and Announcements

    We are releasing our small cap index, composed of 40 members ranked 31-70 in our eligible universe. Please see the methodology page for a full description and our various tools for current pricing.


    The November Rebalance will be effective as of 11/15/2017 and index membership changes are confirmed. Please click here for updated index membership and weightings.

    Bletchley 10 Indexes
    Bletchley 20 Indexes
    Bletchley 40 Indexes
    Bletchley Ethereum Token Indexes

    The October Rebalance will be effective as of 10/18/2017 and index membership changes are confirmed. Note that this rebalance reflects our shifts to fully diluted market caps. Please click here for updated index membership and weightings.

    Bletchley 10 Indexes
    Bletchley 20 Indexes
    Bletchley Ethereum Token Indexes

    We are switching our source for the market capitilzation, and float percentages, of crypto assets from coinmarketcap.com to onchainfx.com. This is in accordance with our view that the typical market caps the community has been using are flawed, and a switch to fully diluted market cap is necessary. We applaud onchainfx for rising to fill that need.

    This change will result primarily in zcash and stellar lumens being in the ten index. It will also make ethereum classic, maidsafecoin, and gnosis much higher on the selection list than before. Weightings will be relatively unaffected, as the publicly available supply is consistent between the two sources.

    Additionally, we are adding a new rule to our general methodology. We are adding a float percentage requirement (or % available supply) of 10% to prevent the inclusion of assets that are extremely centralized. This requirement currently only excludes NEO GAS.

    Also starting with the October rebalance we will no longer be updating the tables in the methodology section with the weightings at each rebalance. You can instead find a link to those on our updates page. We will leave the tables up to help provide historical context.


    The September Rebalance will be effective as of 9/20/2017 and index membership changes are confirmed. Please see the tables in the methodology section for member weightings after the rebalance.

    Bletchley 10 Indexes
    Bletchley 20 Indexes
    Bletchley Ethereum Token Indexes

    Index data is now available for download as CSV (comma separated value) files. There is one file per index where each file contains a human readable time, the same time as a unix time stamp in milliseconds, the index value in bitcoin and the index value in US dollars. A link to the downloads page can be found on the bottom of the home page or click here


    The August Rebalance will be effective as of 8/16/2017 and index membership changes are confirmed. Please see the tables in the methodology section for member weightings after the rebalance.

    Bletchley 10 Indexes
    Bletchley 20 Indexes
    Bletchley Ethereum Token Indexes

    Bitcoin Cash was added to the Bletchley 10 Indexes in accordance with our Methodology on August 1st at approximately 15:00 US Central Time. Please note that this means there are currently 11 members in the index. Bitcoin cash will remain in the index until the next Rebalance on August 16th at which point it will remain eligible for inclusion if it meets all normal requirements.


    The July Rebalance will be effective as of 7/19/2017 and index membership changes are confirmed. Please see the tables in the methodology section for member weightings after the rebalance.

    Bletchley 10 Indexes
    Bletchley 20 Indexes
    Bletchley Ethereum Token Indexes

    We are excited to announce that we have launched another index family, the Bletchley Ethereum Token Indexes. This index will be composed of exclusively ERC-20 tokens and have a variable number of members not to exceed 30. Please see the methodology page for a full description, inital membership, and creation values.


    The June Rebalance will be effective as of 6/21/2017 and index membership changes are confirmed. Please see the tables in the methodology section for member weightings after the rebalance.

    Bletchley 10 Indexes
    Bletchley 20 Indexes

    The May Rebalance will be effective as of 5/17/2017 and index membership changes are confirmed. Please see the tables in the methodology section for member weightings after the rebalance.

    Bletchley 10 Indexes
    Bletchley 20 Indexes

     

    Bletchley - A Better Benchmark