@averysandy
If ETF net subscriptions spike unusually in one day, distinguishing sustainability is essential. Concentration risk emerges if inflows stem from a handful of institutions versus broad-based demand. Investor type and funding source analysis provides clarity: leverage-driven subscriptions may unwind quickly, while pension or wealth management inflows are “stickier.” Comparing average subscription sizes, rebalancing patterns, and linked custody flows helps reveal sustainability. If concentration is high, price support may fade after the initial burst. Monitoring follow-through over several days is key to validating whether such inflows are structural or transient.
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