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quarterly holdings since 2019, from its SEC Form N-PORT filings, TickerInside, https://tickerinside.com/api/v1/quarterly/ivoo.json","answer":"In IVOO's SEC filings, its largest position went from Zebra Technologies (ZBRA) at 0.75% on 2019-11-30 to Flex Ltd. (FLEX) at 1.58% on 2026-05-31, across 27 quarterly reports."}