Written in Stone: the Historic Documents and Mottos Behind 'My Word Is My Bond'
By Sophia Al-Mansoor
No institution cemented the practical weight of this oath more visibly than the London Stock Exchange. Following decades of informal trading inside smoky alleys near Change Alley, London brokers gathered in March 1801 to raise funds for a formal, subscription-based exchange on Capel Court. When the institution adopted its formal coat of arms, it engraved three words across its crest: Dictum Meum Pactum.
This motto was not decorative PR. For nearly two centuries, trading across the Exchange floor functioned almost exclusively on spoken bargains and hurried pencil scrawls in pocket notebooks. Jobbers and brokers traded millions of pounds sterling during rapid market swings using quick shouts across physical trading pits. The formal paper contracts arrived days later through clearing clearinghouses. If market prices collapsed between the verbal agreement and the written settlement, the losing party absorbed the loss without protest. The unwritten rule of trust served as the primary operational risk model of global finance.
That physical architecture dissolved on October 27, 1986, during the deregulation event known as the Big Bang. Computerized quotation terminals replaced face-to-face pit trading. As screen executions, automated order-matching engines, and cross-border institutional counterparties replaced interpersonal relationships, the London Stock Exchange altered its governance structure. The institution transitioned to a publicly traded commercial entity in 2001. The motto remains an enduring cultural symbol, but systemic compliance programs and cryptographic clearing protocols now shoulder the burden once carried by personal honor.
Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.
