Robinhood

Source — daily bars, quotes, option chains and quotes (venue RH), behind a sign-in. The live price stream for the watchlist comes from Yahoo, not from here.

Executor — robinhood-<last four>: a login holds more than one account, and a session trades exactly one, named by the last four digits of its number. Real money; there is no paper account.

Holdings — Portfolio syncs each account's positions, which is what the watchlist starts from and what a book study is sized against.

Sign in from Accounts. An expired session is a problem on the dashboard, an alert, and a line in the Operations view until you sign in again.