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quarterly holdings since 2019, from its SEC Form N-PORT filings, TickerInside, https://tickerinside.com/api/v1/quarterly/mgc.json","answer":"In MGC's SEC filings, its largest position went from Microsoft (MSFT) at 5.12% on 2019-11-30 to Nvidia (NVDA) at 9.10% on 2026-05-31, across 27 quarterly reports."}