The following are the three largest mutual fund holders in Exxon Mobil Integrated oil and gas distributor Exxon Mobil Corporation (NYSE: XOM). 

Vanguard Total Stock Market Index Fund (VTSMX)

The largest mutual fund holder of Exxon, the Vanguard Total Stock Market Index Fund (VTSMX), owns 102,086,256 shares of Exxon Mobil as of December 2017. This mutual fund was created in 1992 and designed to give broad exposure to the total U.S. stock market by including small-cap, mid-cap and large-cap growth and value stocks. As of December 31, 2017, the fund has $662.6 billion in net assets invested in 3,638 stocks. Exxon Mobil shares represent the fund's eighth-largest holding by portfolio weight and 1.28% of its total assets. The minimum investment for this fund is $3,000.

Vanguard 500 Index Fund Investor Shares (VFINX)

The Vanguard 500 Index Fund (VFINX) is the second-largest mutual fund holder of Exxon Mobil with 72,405,266 shares as of December 2017. The fund is the industry's first index fund for individual investors and is invested in 506 stocks, covering a diversified spectrum of the largest U.S. companies and mirroring the Standard and Poor's 500 Index (S&P 500). The total net assets are $391.4 billion, with a 6.1% allocation to the energy sector. Exxon Mobil shares represent the fund's eighth-largest position and 1.55% of total assets. The minimum investment is $3,000.

SPDR S&P 500 ETF (SPY)

The SPDR S&P 500 ETF (SPY) is the third-largest mutual fund holder of Exxon Mobil with 53,843,906 shares as of December 2017. First launched in 1993, this $306.6 million fund was the first ETF listed in the United States. It seeks to track the performance of the S&P 500 Index through its investment in 504 stocks. Exxon Mobile shares represent 1.57% of the fund's total assets as of February 2018.