In afternoon trade the S&P/ASX 200 (Index: ^AXJO) (ASX: XJO) appears to have run out of steam and is down a disappointing 0.3% to 6,029 points.
Four shares that have fallen more than most today are listed below. Here's why they are ending the week in the red:
The Auscann Group Holdings Ltd (ASX: AC8) share price is down 6.5% to 72.5 cents. Today's decline appears to be related to profit-taking. Which shouldn't come as much of a surprise considering the pot stock's shares are up a massive 45% in the last five days even after accounting for today's decline.
The Santos Ltd (ASX: STO) share price has fallen 3.5% to $4.49. Today's decline appears to be related to a broker note out of UBS which revealed that its analysts have downgraded the energy company to a sell rating with a price target of $4.05 following its recent trading update. While the update was a touch disappointing, I think it is still worth holding onto your shares due to the prospect of rising oil prices.
The Whitehaven Coal Ltd (ASX: WHC) share price has tumbled 5% to $3.81. Today's decline is attributable in full to the coal miner's shares going ex-dividend this morning. Eligible shareholders can now look forward to receiving its 6 cents per share dividend and 14 cents per share capital return on November 28.
The XERO FPO NZX (ASX: XRO) share price has fallen 3.5% to $29.50. This decline appears to be related to a broker note out of Macquarie's equities desk this morning. That note revealed that its analysts have downgraded Xero to an underperform rating with a NZ$30 (A$27) price target following its recent update.