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quarterly holdings since 2019, from its SEC Form N-PORT filings, TickerInside, https://tickerinside.com/api/v1/quarterly/spsm.json","answer":"In SPSM's SEC filings, its largest position went from Roku, Inc. (ROKU) at 0.31% on 2019-09-30 to FormFactor, Inc. (FORM) at 0.68% on 2026-06-30, across 28 quarterly reports."}