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Scarce ISEC 250 stock market computer made by the ISEC Corporation in Princeton, New Jersey, circa 1967. Solid-state electronic analog computer housed in a teak-framed cabinet, 16.5˝ x 7˝ x 8˝, with cream-colored enamel faceplate, featuring a large analog risk-assessment meter labeled “High Risk” and “Low Risk,” rotary input controls for market variables, illuminated “Sell Only” and “Buy Only” indicators, red push-buttons marked “Push to Read” and “Push to Reset,” dedicated controls for Dow Jones and stock-price inputs, and market-trend selectors. The underside is numbered “994.” Includes its custom carrying case. In fine, working condition.
Introduced by technologist and entrepreneur Fredrik J. Ranney in 1966–1967, the ISEC 250 represented one of the earliest commercially marketed attempts to place computer-assisted investment analysis directly into the hands of individual investors. Marketed through the ISEC Investment Advisory Service, the machine worked in conjunction with regularly updated stock-market data supplied to subscribers, allowing users to evaluate individual securities through a series of manually entered variables. Using analog circuitry rather than digital computation, the ISEC 250 analyzed factors including price history, earnings performance, market trends, and broader market conditions, ultimately presenting its results through a prominent front-panel risk indicator and buy-or-sell guidance system.
Contemporary promotional materials emphasized the machine's ability to bring sophisticated analytical techniques to investors who otherwise lacked access to institutional research resources. Reporting on the system in August 1966, Computers and Automation noted that "First year testing, which established a model fund for analysis, resulted in profits of 44 percent, excluding commissions and reinvestment of profits." Although such claims reflected the optimism of the era, the ISEC 250 remains a noteworthy early attempt to apply computerized analysis to personal investing.
