Item 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES
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Item 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES
Market Information
The Company's common stock, par value $0.10 per share, or Common Stock, trades on the New York Stock Exchange or NYSE under the symbol “LH.”
Holders
On February 26, 2019, there were approximately 3,000 holders of record of the Common Stock.
Transfer Agent
The transfer agent for the Company's Common Stock is American Stock Transfer & Trust Company, Shareholder Services, 6201 Fifteenth Avenue, Brooklyn, NY 11219, telephone: 800-937-5449, website: www.amstock.com.
Dividends
The Company has not historically paid dividends on its Common Stock and does not presently anticipate paying any dividends on its Common Stock in the foreseeable future.
Common Stock Performance
The graph below shows the cumulative total return assuming an investment of $100 on December 31, 2013, in each of the Company’s common stock, the Standard & Poor’s, or S&P Composite-500 Stock Index and the S&P 500 healthcare Index, or Peer Group, and assuming that all dividends were reinvested.
Comparison of Five Year Cumulative Total Return
| 12/2013 | 12/2014 | 12/2015 | 12/2016 | 12/2017 | 12/2018 | ||||||||||||||||||
| Laboratory Corporation of America Holdings | $ | 100.00 | $ | 118.09 | $ | 135.32 | $ | 140.51 | $ | 174.58 | $ | 138.29 | |||||||||||
| S&P 500 Index | $ | 100.00 | $ | 113.69 | $ | 115.26 | $ | 129.05 | $ | 157.22 | $ | 150.33 | |||||||||||
| S&P 500 Health Care Index | $ | 100.00 | $ | 125.34 | $ | 133.97 | $ | 130.37 | $ | 159.15 | $ | 169.44 |

Issuer Purchases of Equity Securities (all amounts in millions, except per share amounts)
The following table sets forth information with respect to purchases of shares of the Company’s Common Stock made during the quarter ended December 31, 2018, by or on behalf of the Company:
| Total Number of Shares Repurchased | Average Price Paid Per Share | Total Number of Shares Repurchased as Part of Publicly Announced Program | Maximum Dollar Value of Shares that May Yet Be Repurchased Under the Program | ||||||||||
| October 1 - October 31 | 0.6 | $ | 168.34 | 0.6 | $ | 744.0 | |||||||
| November 1 - November 30 | 1.1 | 163.81 | 1.1 | 555.9 | |||||||||
| December 1 - December 31 | 0.8 | 143.02 | 0.8 | 443.5 | |||||||||
| 2.5 | $ | 158.40 | 2.5 |
At the end of 2017, the Company had outstanding authorization from the board of directors to purchase up to $401.4 of Company common stock. On April 24, 2018, the board authorized an increase in the Company's share repurchase program to a total of $1,000.0. During 2018, the Company purchased 4.2 shares of its common stock at a total cost of $700.0. At the end of 2018, the Company had outstanding authorization from its board of directors to purchase an additional $443.5 of Company common stock. On February 6, 2019, the board of directors replaced the Company’s existing share repurchase plan with a new plan authorizing repurchase of up to $1.25 billion of the Company’s shares. The repurchase authorization has no expiration date.
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