Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is traded on the NASDAQ Global Select Market (NASDAQ) under the symbol “JBHT.” At December 31, 2018, we were authorized to issue up to 1 billion shares of our common stock, and 167.1 million shares were issued. We had 108.7 million and 109.8 million shares outstanding as of December 31, 2018 and 2017, respectively. On February 12, 2019, we had 1,133 stockholders of record of our common stock.

Dividend Policy

Our dividend policy is subject to review and revision by the Board of Directors, and payments are dependent upon our financial condition, liquidity, earnings, capital requirements, and any other factors the Board of Directors may deem relevant. On January 23, 2019, we announced an increase in our quarterly cash dividend from $0.24 to $0.26 per share, which will be paid February 22, 2019, to stockholders of record on February 8, 2019. We currently intend to continue paying cash dividends on a quarterly basis. However, no assurance can be given that future dividends will be paid.

Purchases of Equity Securities

The following table summarizes purchases of our common stock during the three months ended December 31, 2018:

(1) On April 20, 2017, our Board of Directors authorized the purchase of up to $500 million of our common stock.

Stock Performance Graph

The following graph compares the cumulative 5-year total return of stockholders of our common stock with the cumulative total returns of the S&P 500 index and two customized peer groups. The peer group labeled “Peer Group 2017” consists of 13 companies: C.H. Robinson Worldwide Inc., CSX Corp, Expeditors International Of Washington Inc., Hub Group Inc., Kansas City Southern, Norfolk Southern Corp, Old Dominion Freight Line Inc., Republic Services Inc., Ryder System Inc., Schneider National Inc., Stericycle Inc., Waste Management Inc. and XPO Logistics Inc. The peer group labeled “Peer Group 2018” consists of 14 companies: C.H. Robinson Worldwide Inc., CSX Corp, Expeditors International Of Washington Inc., Hub Group Inc., Kansas City Southern, Knight-Swift Transportation Holdings Inc., Norfolk Southern Corp, Old Dominion Freight Line Inc., Republic Services Inc., Ryder System Inc., Schneider National Inc., Stericycle Inc., Waste Management Inc. and XPO Logistics Inc. The graph assumes the value of the investment in our common stock, in the index, and in each of the peer groups (including reinvestment of dividends) was $100 on December 31, 2013, and tracks it through December 31, 2018. The stock price performance included in this graph is not necessarily indicative of future stock price performance.