When we picture ancient Rome, we think of senators, legions, and baths. But between a conquest and a declamation, there were also speculators of the forum—shrewd businessmen ready to invest in contracts, ships, construction… and to sell their shares to the highest bidder.

Yes, you heard right: in ancient Rome there were company-like entities with transferable shares. And while there was no stock exchange like New York or London, there was a very real financial life made of investments, partnerships, and… accounting, even without Excel.

📜 The first “joint-stock companies” in history

The most fascinating structure was the societas publicanorum, a private company investing in state services: tax collection, military supplies, public infrastructure. Each partner invested capital and received a share of the profits.

These shares, called partes, could be bought, sold, or inherited, creating an informal but efficient secondary market. And where did this trading happen? In the Roman forum, of course. Forget Wall Street—here deals were struck in the shadow of temples, among lawyers and olive merchants.

Historian Pliny the Elder tells us that these partes were actively traded. Even Cicero invested in them. Many senators, who were officially forbidden from commerce, did business through proxies. Politics and business—always close friends.

🧮 Counting without numbers

How did they do accounting without calculators, Arabic numerals, or columns to add up?
Simple: Romans didn’t calculate using Roman numerals. Those I, V, X, L, etc., were for writing, not for counting.

They used a brilliant device: the Roman abacus, a tablet with beads in grooves—a kind of manual calculator using the decimal system.
Calculations were made there, then the final result was transcribed in Roman numerals, for formality and legal purposes.

They kept records on wax tablets (tabulae ceratae) and later copied them into official account books (codex rationum). Every respectable household had a scriba rationis, the ancient equivalent of a CFO.

🧠 Lessons for the modern manager

Paradoxically, the Roman world, despite having no digital tools, reminds us that:

Counting isn’t just summing—it’s understanding what truly counts.

1. Roman investors didn’t speculate on thin air—they funded real projects: tolls, supplies, fleets.
2. The separation of ownership and management (partners and agents) prefigures modern business structure.
3. Their use of physical tools highlights that the brain matters more than the software.

In a world where many managers rely entirely on Excel and dashboards, one might ask: Do we still think with numbers, or just read them?

🏛️ Final note… ironic, but not too much

Rome didn’t have a stock exchange—but it had wolves. And the fiercest weren’t on the Palatine Hill, but in the forum, among moneychangers and share traders.

Today, we’d call them traders, venture capitalists, or serial founders.
But they were simply doing business, Roman style.

by Brunus