Invite-only · closed circle

What this site is

Daybook is a private market briefing for a closed circle of invited people. It exists so that circle can stay current on the companies and markets it follows — what moved, what was filed, what the press wrote — without trading, without advice and without pretending to be an index.

What it is

An access-restricted watchlist and newsroom. The lists cover a bionics & neurotech theme, humanoid & general robotics, the large US technology and blue-chip companies, the DAX, large European companies, China & Hong Kong and Asia-Pacific — plus the main indices, currencies, commodities and rates for context. Listed securities show delayed quotes so you can see movement at a glance; private companies are tracked for news only; optional alerts tell you when something happens. Accounts are created by an administrator or with an invite code — this is not a public product.

What it is not

This site does not create its own index and does not claim to be one.

  • Not a licensed or official index — and not a benchmark used to price a financial product.
  • Not a fund, ETF, or anything you can buy.
  • Not a broker. You cannot place an order, hold a portfolio, or execute a trade here.
  • Not investment advice and not a recommendation to buy or sell anything.

Why the bionics figure is not an “index”

A published index — S&P, MSCI, MVIS, DAX — has a licensed methodology, a calculation agent, a rebalancing calendar, and is often the basis for investable products. We do not do that, and we do not claim to.

The bionics list carries one editorial figure: the median daily percent move of the listed pure-play companies we follow. It is a same-day reading of names on our list. It has no base value, no back-calculated history, and nothing you can invest in. Every other list simply shows how many names rose or fell and the mean move.

If you want a published thematic benchmark, the closest one we show for context is VanEck’s Medical Robotics & Bionic Engineering ETF (CIB0), which tracks the MVIS Global Bionic Healthcare index. That is their product, not ours. The real indices on the Today page — DAX, Euro Stoxx 50, S&P 500, Nasdaq, Hang Seng, Nikkei — are quoted as published by their providers.

How the bionics figure is counted

Counted today across 36 listed pure-plays. The rules are editorial, written down here so nobody has to guess.

  • Only listed companies marked as a pure play — bionics is the core business, not a side division.
  • Only the six bionics sectors: prosthetics, exoskeletons, neurotech, senses, organs, surgical and rehab robotics.
  • Humanoid and general robotics is a list of its own, not part of the figure — a Tesla or Fanuc headline must not swing the median.
  • Equal-weighted median of today’s percent change. A cap-weighted figure sits next to it for context.
  • No base value, no rebalancing schedule, no “index level” that compounds over time.
  • Not investable. It is a reading of the names we already follow, not a product.

How names get on a list

The lists hold 236 listed securities and 50 private companies. Inclusion is editorial, not a mechanical index universe.

  • Themed lists (bionics, robotics): the company’s core business is in the theme, or it has a material division that is. Pure-plays and diversified groups are labelled so a $190 B device company is never mistaken for a $20 M implant name.
  • Regional lists (US, DAX, Europe, China, Asia-Pacific): the largest and most-followed companies of each market — the DAX list is the current 40 constituents.
  • Private companies appear for news only — no quote, no weight anywhere.
  • Names are added or removed when listings, acquisitions or strategy changes take them in or out. The lists are reviewed; they are not rebalanced on a calendar.

Quotes, news, alerts

Quotes come from Yahoo Finance and are delayed by exchange. News is pulled from filings, wires, central banks, business and trade press and aggregators. The server fetches all of it — your browser never talks to those sources. Figures are without warranty. Alerts only notify; they never place an order.