As of June 20, 2018, telecommunication services and broadband provider AT&T Inc. (NYSE: T)  has a market cap of $235.35 billion. 

The following are the top four largest mutual funds holding shares of AT&T.

Vanguard Total Stock Market Index Fund (VTSMX)

The largest mutual fund holder, Vanguard Total Stock Market Index Fund ("VTSMX"), owns 153 million shares of AT&T which accounts for 2.49% of total shares held. This mutual fund was created in 1992 and designed to give broad exposure to the total US. stock market by including small-cap, mid-cap and large-cap growth and value stocks. As of June 2018, VTSMX has $698.6 billion in assets under management (AUM) and invests 0.71% of its total assets in AT&T. It has a five-year annualized return of 13.26%, an expense ratio of 0.14%, and the minimum investment is $3,000.

Vanguard 500 Index Fund Investor Shares (VFINX)

As of June 2018, Vanguard 500 Index Fund ("VFINX") is the second-largest mutual fund holder of AT&T with 109 million shares which account for 1.79% of total AT&T shares and makes up 0.86% of VFINX's portfolio. This is the industry's first index fund for individual investors and is invested in 505 stocks, covering a diversified spectrum of the largest US. companies mirroring the Standard and Poor's 500 index (S&P 500). Its total net assets are $414.7 billion, with an expense ratio of 0.14%. The fund requires a minimum investment of $3,000.


The SPDR S&P 500 ETF ("SPY") is the first ever ETF introduced in the U.S. public market and remains one of the most popular to this day. As of June 2018, SPY is the third largest AT&T holder with 82 million shares. This accounts for 0.99% of its total assets and 1.12% of total shares held in AT&T.  The ETF has total assets of 267.4 billion, an expense ratio of 0.09%, and a five-year annualized return of 13.19% as of March 31, 2018 . 

Vanguard Institutional Index Fund Institutional Shares (VINIX)

The Vanguard Institutional Index Fund Institutional Shares ("VINIX") is a $225.1 billion institutional fund, as of June 2018, that tracks the S&P 500 Index. The fund follows a passively managed, full replication approach invested in 506 stocks. It is the fourth-largest mutual fund holder of AT&T stock with 59 million shares. The fund has a 0.86% allocation of its total assets in AT&T which accounts for 0.97% of total shares in the company. This is the institutional version of the Vanguard 500 Index Fund, and as such is available only to institutional investors. The minimum investment is $5,000,000.


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