Yahoo! Inc. (NASDAQ:YHOO)

The share price exhibited a fluctuating trend over the observed period. Initially, it increased slightly from $31.45 in 2006 to $32.10 in 2007, then declined steadily to a low point of $13.23 in 2009. Following this decline, the share price showed a recovery phase with some variability, rising to $21.94 in 2013 and reaching a notable peak of $44.28 in 2015. After a dip to $31.79 in 2016, the price surged again to $46.24 by 2017.

Sales per share followed a somewhat stable but slightly upward trend despite some fluctuations. The value grew from $3.71 in 2006 to $5.21 in 2008, then dropped marginally during 2009-2012, reaching a low of $4.11 in 2012. After that, sales per share demonstrated a recovery and gradual increase, climbing back to $5.40 by 2017, surpassing the earlier peak.

The price-to-sales (P/S) ratio showed considerable variation throughout the period, reflecting changes in market valuation relative to sales performance. The ratio decreased sharply from 8.48 in 2006 to a trough of 2.56 in 2009, indicating the share price had fallen more significantly relative to sales per share. Subsequently, the P/S ratio climbed steadily, peaking at 8.98 in 2014 before experiencing a decline and then recovering to 8.56 by 2017. This suggests that market valuations relative to sales improved notably after 2009, stabilizing at higher levels in the later years.

In summary, the data reveals a period of initial decline in both share price and market valuation relative to sales through 2009, followed by a recovery phase marked by increasing share prices and a rising P/S ratio. Sales per share exhibited modest growth with some intermediate decline, indicating relatively stable operational performance alongside fluctuating market sentiment.