The first decentralized cryptocurrency, bitcoin, was created in 2009 by pseudonymous developer Satoshi Nakamoto. It used SHA-256, a cryptographic hash function, as its proof-of-work scheme. In April 2011, Namecoin was created as an attempt at forming a decentralized DNS, which would make internet censorship very difficult. Soon after, in October 2011, Litecoin was released. It was the first successful cryptocurrency to use scrypt as its hash function instead of SHA-256. Another notable cryptocurrency, Peercoin was the first to use a proof-of-work/proof-of-stake hybrid. IOTA was the first cryptocurrency not based on a blockchain, and instead uses the Tangle. Many other cryptocurrencies have been created though few have been successful, as they have brought little in the way of technical innovation. On 6 August 2014, the UK announced its Treasury had been commissioned to do a study of cryptocurrencies, and what role, if any, they can play in the UK economy. The study was also to report on whether regulation should be considered.
A Fund will be a personal holding company for federal income tax purposes if 50% or more of the Fund’s shares are owned, at any time during the last half of the Fund’s taxable year, directly or indirectly by five or fewer individuals. For this purpose, the term “individual” includes pension trusts, private foundations and certain other tax-exempt trusts. If a Fund becomes a personal holding company, it may be subject to a tax of 20% on all its investment income and on any net short-term gains not distributed to shareholders on or before the fifteenth day of the third month following the close of the Fund’s taxable year. In addition, the Fund’s status as a personal holding company may limit the ability of the Fund to distribute dividends with respect to a taxable year in a manner qualifying for the dividends-paid deduction subsequent to the end of the taxable year and will prevent the Fund from using tax equalization, which may result in the Fund paying a fund-level income tax. Each Fund intends to distribute all of its income and gain in timely manner such that it will not be subject to an income tax or an otherwise applicable personal holding company tax, but there can be no assurance that a Fund will be successful in doing so each year.
There's a lot of ins and outs which can get confusing in arbitrage trading. We won't go into the technicals of why futures contracts trade at a premium to spot price. You can read a full explanation here. If it's not of interest to you, all you need to know is that there's a tendency, the further out in time the futures contract expires, for the premium to spot to be higher and higher in nominal percentage terms.