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Quick answers
What did Charles Ponzi claim to be doing?
He told investors that profits would come from buying and redeeming International Reply Coupons across borders. Investigators in 1920 showed that coupon issuance could not support the money he was taking.
When did the scheme collapse?
Public unraveling came in July-August 1920 as the Boston Post published its investigation and investors sought redemptions. Ponzi surrendered to authorities in August 1920.
What was he convicted of?
He pleaded guilty to federal mail fraud in 1920. Massachusetts later convicted him of larceny after a 1922 mistrial and a 1925 guilty verdict. He served federal then state time.
How much money was involved?
Contemporary estimates commonly cite about $15-20 million in 1920 dollars of liabilities or take, with tens of thousands of note-holders. The figure is not comparable, unadjusted, to late-twentieth-century cases.
Did the Boston Post really break the case?
The Post's July-August 1920 reporting, using Barron and postal facts, is the investigation the Pulitzer board later honored. State and federal officers were already looking; the newspaper made the arithmetic public.
Was this the first such fraud?
No. Earlier promoters had paid old investors with new money. The 1920 Boston collapse is the namesake event in English, not the first instance in history.
The dollar scale is modest beside later atlas entries. The linguistic and doctrinal scale is not.
Every later 'Ponzi' headline is a descendant of the Post's 1920 vocabulary.
Law & institutions
- Mail-fraud charging practice — The 1920 federal case is an early popular example of using the mails statute against a promotional note scheme.
- State larceny as a second track — Massachusetts's separate prosecution is taught as dual-sovereign follow-through after a federal plea.
- The name in later opinions — U.S. courts and the SEC still define a Ponzi scheme by the payment-from-new-money pattern, citing the type even when the 1920 facts are not in issue.
- SIPC and modern recoveries — Later liquidations (including Madoff) use 'net winner / net loser' ideas that 1920 Boston only sketched. The name traveled; the remedies grew.
Culture
- A surname that became a noun — English speakers say 'a Ponzi' without the biography. That is the cultural result.
- Pulitzer memory — Journalism schools still assign the 1920 Post campaign as a public-service model.
- Immigrant-promoter stereotype — Period cartoons leaned on nativist tropes. Serious later accounts try to keep the coupon arithmetic ahead of the caricature.
- Bridge to Madoff teaching — Business-history courses pair 1920 Boston with 2008 New York as scale and supervision, same legal idea.
Money & scale
- $15-20 million (1920 $) — The usual contemporary band for liabilities or take. Inflation-adjusted comparisons are teaching aids, not court findings.
- Tens of thousands of notes — Period estimates of note-holders vary; the order of magnitude is mass retail, not a handful of clubs.
- Agent commissions — Recruiters were paid to bring new money. Courts treated that fact as part of the intake machine, not as a separate mystery.
The impact is the word. Later cases supplied the billions; 1920 Boston supplied the name.
Public-record encyclopedia. Not legal advice. Not a how-to. Graphic detail is withheld. Wars belong in a separate atlas.