Where the terms "stock" and "stock holder" come from
One of the most important forms of currency in England in Henry’s time were notched “tally sticks” used to record debts.
Tally sticks were quite explicitly IOUs: both parties to a transaction would take a hazelwood twig, notch it to indicate the amount owed, and then split it in half. The creditor would keep one half, called “the stock” (hence the origin of the term “stock holder”) and the debtor kept the other, called “the stub” (hence the origin of the term “ticket stub.”)
Tax assessors used such twigs to calculate amounts owed by local sheriffs. Often, though, rather than wait for the taxes to come due, Henry’s exchequer would often sell the tallies at a discount, and they would circulate, as tokens of debt owed to the government, to anyone willing to trade for them.