1973: The Year Modern Options Were Born (CBOE, OCC and Black-Scholes)
When the World of Options Was Almost a Dark Cave
Today we take for granted clean options chains,
Greeks calculated to the second and platforms like
ProRealTime v13
where you build an Iron Condor with a couple of clicks.
But for many decades, the world of financial options was almost
total darkness.
There were no standardized contracts, every agreement was almost handcrafted,
prices were negotiated “the old-fashioned way” and information was concentrated
in a few hands. If you wanted to trade options, you entered an opaque universe
where it was hard to know whether the price you paid was really justified.
All of that changes at a very specific point in history:
1973. That year, three key pieces line up that, together,
give rise to the modern options market as we know it today.
First Pillar: The CBOE Is Born and Options Become Standardized
The first major change is the creation of the
Chicago Board Options Exchange (CBOE).
For the first time, options stop being private agreements
and start trading on an organized exchange.
Those beginnings were very modest:
call options were listed on a handful of companies,
with a small number of expirations and strikes.
But the key wasn’t how many there were, but that they became
standardized:
- Same contract size.
- Defined expirations.
- Clear, public strikes.
That standardization creates something new: real liquidity.
When we all trade the same contract, it’s much easier
for a deep market of buyers and sellers to form.
From there is when vertical spreads, butterflies,
Iron Condors… the entire ecosystem of strategies
that we build almost routinely today start to make sense.
Second Pillar: The OCC and the Market’s Referee
An exchange on its own isn’t enough for a market to work.
You need someone to act as referee
and become the central counterparty for all trades.
That’s where the Options Clearing Corporation (OCC) enters the scene.
Its role is simple to sum up and enormous in impact:
When you buy an option, in practice you don’t depend on whether the seller
is solvent or not: the OCC steps in the middle,
guaranteeing correct settlement.
If one of the parties fails, the system doesn’t collapse:
the clearinghouse absorbs that risk.
This piece turns the options market into a
much safer and more scalable environment.
Without a solid central counterparty, the volume we see today
would be flatly unthinkable.
Third Pillar: The Black-Scholes-Merton Model
In parallel with the creation of the CBOE and the OCC,
another fundamental piece appears in the academic world:
the Black-Scholes model,
later expanded by Merton.
For the first time, a practical formula becomes available to
value options, connecting:
- The price of the underlying.
- The time to expiration.
- The interest rate.
- Volatility.
From there, price stops being just “what someone is willing to pay”
and starts having a logical structure behind it.
The language of deltas, gammas, vegas, thetas is born…
and the door opens to building systematic hedges
and complex strategies with a quantitative foundation.
With all its limits and criticisms, the Black-Scholes-Merton model
provides the starting point
for the risk analysis we still use today.
Why What Mattered Wasn’t a Single Event, but the Combination
What’s truly powerful about 1973 isn’t each piece on its own,
but the synchrony of all three:
- An organized exchange (CBOE) that standardizes contracts.
- A clearinghouse (OCC) that guarantees the system.
- A valuation model (Black-Scholes-Merton)
that gives a mathematical framework to prices.
From there the impact is immediate:
Traders and managers start to learn this new language,
options volume multiplies and, for the first time,
you can protect portfolios,
sell credit with clear rules
and build range or trend strategies in a
regulated and standardized way.
Over time, new expirations arrive, more strikes,
monthly options,
weeklies and, decades later,
the “madness” of 0DTE.
That entire universe is born from those foundations laid in 1973.
What Does All This Have to Do With Your Next Trade
It may seem like a history lesson, but it’s actually
closely tied to your day-to-day.
Every time you open a spread, an Iron Condor or a simple protective put today:
- You benefit from the standardization the CBOE brought.
- You trust the security of the clearinghouse.
- You rely, directly or indirectly, on a valuation model
that connects price, time and volatility.
And you see all of that reflected in whatever platform you work on:
in my case, in
ProRealTime v13
,
with the options chain, the calculated Greeks and the strategy analyzers
that take for granted that these three pillars exist.
1973: Why It Deserves a Place in Every Options Trader’s Mind
Behind every trade you make today there’s a very specific legacy:
the creation of an organized market for options,
a solid clearing infrastructure
and a mathematical framework for understanding risk.
None of this is by chance.
Understanding where the options market comes from helps you better appreciate
the tools you have now and use with more judgment
everything that today seems “normal”: from selling credit with defined risk
to hedging a portfolio systematically.
And the next time you build a strategy on your platform,
remember that, in a way, you’re trading on the rails
that were laid in that pivotal year: 1973.
