Question: Who s the cheif executive officer of the company that is the largest provider of mutual funds and the second-largest provider of exchange-traded funds (ETFs) in the world?

Context paragraphs:
BetaShares: BetaShares is a company based in Sydney, Australia, and is a provider of exchange-traded funds (ETFs) and other ASX-traded funds.  The company introduced a range of products into the Australian ETF landscape, including Australia's first currency hedged ETF, Australia's first range of commodity ETFs, Australia's first range of currency ETFs, Australia's first ETF using Fundamentally based indexes and a range of short exchange traded products.

Silver exchange-traded product: Silver exchange-traded products are exchange-traded funds (ETFs), exchange-traded notes (ETNs) and closed-end funds (CEFs) that aim to track the price of silver.  Silver exchange-traded products are traded on the major stock exchanges including the London and New York Stock Exchanges.  The U.S Geological Survey cites the emergence of silver ETFs as a significant factor in the 2007-2011 price rise of silver.  As of September 2011, the largest of these funds holds the equivalent of over one third of the world's total annual silver production.

Source UK Services: Source UK Services Ltd., or simply Source, is a specialist British-based provider of exchange-traded funds (ETFs) and exchange-traded commodities (ETCs).  The first products of Source, 22 T-ETCs and 13 ETFs, became available in April 2009 on Deutsche Börse.  Source was started by five of the world's largest equity trading houses – BofA Merrill Lynch, Goldman Sachs, J.P. Morgan, Morgan Stanley and Nomura.  In 2014, Warburg Pincus, the large global Private Equity firm, purchased 51% and is now the sixth owner.  As part of that deal, Lee Kranefuss, the innovator behind the iShares ETF line at Barclays and BlackRock, became Executive Chairman of Source.

The Vanguard Group: The Vanguard Group is an American investment management company based in Malvern, Pennsylvania with over $4.4 trillion in assets under management.  It is the largest provider of mutual funds and the second-largest provider of exchange-traded funds (ETFs) in the world after BlackRock's iShares.  In addition to mutual funds and ETFs, Vanguard offers brokerage services, variable and fixed annuities, educational account services, financial planning, asset management, and trust services.

United States Commodity Funds: United States Commodity Funds LLC (USCF) is a US company based in Oakland, CA, specializing in managing exchange-traded commodity funds, which are often referred to as commodity-based exchange-traded funds (ETFs).  USCF was one of the earliest issuers of exchange-traded commodity funds in the United States.  It is best known for launching in 2006 the first crude oil based exchange traded commodity fund in the United States, United States Oil Fund, LP (ticker: USO), as well as launching in 2007 the first natural gas exchange traded commodity fund, United States Natural Gas Fund, LP (ticker: UNG).  USO and UNG are two of the most actively traded ETFs in the United States.  s of 30, 2016 , USCF managed eleven different exchange traded commodity funds with total assets of approximately $5 billion.

130–30 fund: A 130–30 fund or a ratio up to 150/50 is a type of collective investment vehicle, often a type of specialty mutual fund, but which allows the fund manager simultaneously to hold both long and short positions on different equities in the fund.  Traditionally, mutual funds were long-only investments.  130–30 funds are a fast-growing segment of the financial industry; they should be available both as traditional mutual funds, and as exchange-traded funds (ETFs).  While this type of investment has existed for a while in the hedge fund industry, its availability for retail investors is relatively new.

Core &amp; Satellite: Core & Satellite Portfolio Management is an investment strategy that incorporates traditional fixed-income and equity-based securities (i.e. index funds, exchange-traded funds (ETFs), passive mutual funds, etc.) known as the "core" portion of the portfolio, with a percentage of selected individual securities in the fixed-income and equity-based side of the portfolio known as the "satellite" portion.

Fund.com: Fund.com Inc. is a US-based financial services information publishing company that focused on the fund management industry.  Its aims were to provide a destination website for investments, including mutual funds, hedge funds, money market funds, exchange-traded funds (ETFs), closed-end funds, index funds, commodity funds and other types of pooled investment vehicles.

Mortimer J. Buckley: Mortimer J. "Tim" Buckley (born 1969) is an American executive at The Vanguard Group.  The Vanguard Board elected him unanimously to succeed F. William McNabb III as chief executive officer upon McNabb's retirement at the end of December 2017.

Gold exchange-traded product: Gold exchange-traded products are exchange-traded funds (ETFs), closed-end funds (CEFs) and exchange-traded notes (ETNs) that aim to track the price of gold.  Gold exchange-traded products are traded on the major stock exchanges including Zurich, Mumbai, London, Paris and New York.  s of 25 2010 , physically backed funds held 2,062.6 tonnes of vaulted gold in total for private and institutional investors.  Each gold ETF, ETN, and CEF has a different structure outlined in its prospectus.  Some such instruments do not necessarily hold physical gold.  For example, gold ETNs generally track the price of gold using derivatives.

Supporting paragraphs: Mortimer J. Buckley The Vanguard Group
Answer: Mortimer J. "Tim" Buckley