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Selections are essentially a leveraged position,??Leon explained. ?�When you'll find large concentrated positions at a certain rate and expiration, and those occur into expiration, then that could result in liquidation spikes.?????�머지 ?�금?��? ?�래??종이 지갑에 ?�아 ?��? ?�게 ?�니?????�런 ?�해 ?�문???�