pre_text: Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities ADTRAN’s common stock is traded on the NASDAQ Global Select Market under the symbol ADTN. As of February 19, 2020, ADTRAN had 163 stockholders of record and approximately 6,972 beneficial owners of shares held in street name. The following table shows the high and low closing prices per share for our common stock as reported by NASDAQ for the periods indicated.
table: COMMON STOCK PRICES
table: 2019 First Quarter Second Quarter Third Quarter Fourth Quarter
table: High $15.40 $17.81 $16.40 $11.59
table: Low $10.49 $13.76 $ 9.92 $ 8.09
question: Analyse this data from a financial earnings document. What was the difference between the high and low closing prices per share for common stock in the second quarter of 2019?