SEC postponed its decision regarding VanEck/SolidX BTC ETF to list on CBOE, implying the commission’s doubts around a bitcoin ETF. Previously, SEC has rejected an ETF proposal from Cameron and Tyler Winklevoss, owners of the Gemini Trust Co. cryptocurrency exchange, along with a solo proposal from SolidXPartners Inc. The SEC’s obvious concern is about possible manipulation in the largely unregulated cryptocurrency market.