Fischer Black 2026-11-05
Fischer Black developed the Black-Scholes model with Myron Scholes. Their 1973 analysis shows how continuous adjustment of a replicating portfolio can eliminate the local exposure to the underlying random price change, leading to a no-arbitrage equation for the value of a contingent claim.[ref]
This approach makes the hedge part of the mathematical explanation of the price. It also makes the assumptions visible: ideal continuous adjustment and the specified price dynamics are ingredients of the derivation, so changing the trading rules or dynamics can change the valuation problem. The Black-Scholes equation is therefore a useful starting point for studying both a tractable model and the effects of relaxing its assumptions.[ref]
Figure 1. . Historical photograph hosted and identified by Goldman Sachs; reproduced by external link. Source.
Myron Scholes 2026-11-05
Myron Scholes, with Fischer Black, developed the Black-Scholes model and its option pricing equation. Their 1973 paper connects a contingent claim's value to the cost of a dynamically adjusted replicating portfolio, under explicit assumptions about trading and the underlying price process.[ref]
The mathematical insight is that a carefully chosen hedge can cancel the instantaneous random component of the claim's value. No-arbitrage then constrains the remaining locally riskless return, producing the Black-Scholes equation together with a final payoff condition. The result is a conditional conclusion within a model: it does not require an ability to predict the actual stock-price path.[ref]
Figure 1.
Portrait of Myron Scholes
. Markus Prantl, via Wikimedia Commons; existing crop by JB Hoang Tam 2, CC BY-SA 3.0. Source.