Definition
A French legal term, used in Anglo-American legal writing to describe a form of speculative dealing on a stock exchange in which neither party intends actual delivery of the underlying asset. The transaction is settled not by the transfer of stocks, funds, or commodities, but by payment of the difference between the contract price and the market price at the time appointed for delivery. Because the agreement contemplates only a monetary settlement of differences — not a genuine commercial exchange — jeux de bourse was historically treated as a gambling transaction rather than a legitimate contract, and was accordingly unenforceable under French law and under legal systems that adopted similar reasoning.
The term translates literally as "games of the exchange" or "stock exchange games," a label that captures the law's characterization of the practice as wagering dressed in commercial form.
Common Language
Modern common usage (Wiktionary): No entry. The term does not appear in general English dictionaries.
Historical common usage (Webster's 1913): No entry. The term was not absorbed into general English usage.
Editorial note: This is pure legal and commercial French, imported into Anglo-American legal dictionaries as a term of art for a specific category of unenforceable speculative contract. Researchers encountering it in English-language sources should treat it as they would any borrowed civil law concept — the French legal context governs its meaning, not ordinary translation.
Common Confusion
Jeux de bourse is easily conflated with legitimate options and futures trading. The historical sources themselves note the surface resemblance: these are dealings in "options" and "futures" (Black's). The distinction, legally significant in the nineteenth century, was one of intent. A genuine futures contract contemplates possible delivery, or at least represents a commercially recognized hedging or speculative instrument enforceable at law. Jeux de bourse, by contrast, involves a mutual understanding from the outset that no delivery will occur and that only differences will change hands — making the transaction, in the eyes of courts applying gambling-contract doctrine, a wager on price movement. As modern derivatives markets have developed enforceable legal frameworks around economically similar instruments, the term has lost operational significance outside historical and comparative contexts.
Why It Matters in Research
Structural pattern: historical evolution with comparative law dimension. The term belongs to a cluster of nineteenth-century legal concepts aimed at policing speculative excess in financial markets, and its primary research value today is historical and comparative rather than practical.
Researchers should be alert to several navigational considerations:
First, the term appears almost exclusively in Anglo-American dictionaries as a borrowed civil law concept. It is not a term of art in English common law. When encountered in nineteenth-century treatises or cases, it signals that the author is drawing on French commercial law — particularly Pardessus's Droit Commercial — to characterize a domestic transaction as unenforceable on wagering grounds.
Second, the enforceability question it represents persisted well into the twentieth century in American law. Courts and legislatures struggled for decades to distinguish enforceable commodity futures contracts from gambling contracts on price differences. The Commodity Exchange Act and its predecessors addressed precisely this fault line. A researcher tracing American futures regulation back to its doctrinal roots will encounter jeux de bourse reasoning embedded in that history.
Third, the Bouvier entry's citation to Pardessus (1 Pardessus, Droit Com. n. 162) is the authoritative primary source for the civil law definition. Researchers requiring the French doctrinal foundation should consult Pardessus directly rather than relying solely on the dictionary summaries.
Fourth, the Rapalje & Lawrence entry uses the synonym "stock-jobbing" — a term with its own distinct history in English law, carrying pejorative and at times statutory weight. The two terms are not perfectly interchangeable; stock-jobbing has a broader English-law meaning that does not always require the no-delivery element central to jeux de bourse.
Historical Dictionary Support
The four historical sources are in close agreement on the core definition, which is unusual for a term with any contested legal history. All four identify the essential features: speculative dealing, no intended delivery, settlement by payment of price differences. Black's (both editions) adds the connection to options and futures. Rapalje & Lawrence supplies the "stock-jobbing" synonym and makes explicit what the others imply — that no delivery is contemplated by either party. Bouvier provides the most technically precise formulation, tracing the definition directly to Pardessus and specifying that the settlement differential is measured between the sale date and the appointed delivery date.
What the historical sources collectively omit is any discussion of how courts actually applied the concept, whether as a defense to enforcement or as a basis for restitution of amounts paid. They also do not address the evolution of the doctrine as organized exchanges developed standardized contracts and clearinghouse settlement mechanisms — developments that progressively undermined the doctrinal coherence of treating all difference-settled contracts as wagering agreements.
Jurisdictional Note
The term originates in French civil law and has no independent doctrinal life in common law jurisdictions. Its appearance in Anglo-American legal dictionaries reflects comparative law borrowing, not adoption. The substantive question it addresses — when does a speculative financial contract become an unenforceable wager — was resolved differently across American states and ultimately at the federal level through commodity regulation rather than through common law gambling doctrine.