Friday's After-Hours Movers Led By Midstates Petroleum, Veeva, BreitBurn, VMware & An Inverse Volatility ETN

Shares of Midstates Petroleum Company Inc MPO more than doubled in price over Friday trading, after its Executive Vice President and COO, Mark E. Eck, spoke at EnerCom’s Oil & Gas Conference. After the bell rang, the rally continued, and the stock is up an extra 7.4 percent in after-hours trading. This makes it the biggest gainer of the afternoon.

On the other hand, there’s Veeva Systems Inc VEEV the biggest loser in after-hours trading, down more than 8.5 percent. The decline does not seem to have been triggered by any particular event or piece of news, but rather looks like a correction of the 9.44 percent surge the stock experienced over the regular trading session.

Also falling is small-cap independent oil and gas partnership BreitBurn Energy Partners L.P. BBEPP, which fell more than 8 percent since the market closed, losing the ground gained during the day. The stock had opened at $13.92, and closed up 6.35 percent, at $14.57. However, it is now trading, in after-hours, around $13.40.

The Credit Suisse AG - VelocityShares Daily Inverse VIX Short Term ETN XIV, for its part, is the largest gainer in the Nasdaq exchange in after-hours. The ETN, which replicates the inverse of the daily performance of the S&P 500 VIX Short-Term Futures index, fell 4.86 percent during the day, but is up almost 2.4 percent in after-hours trading, recuperating some of the lost ground as volatility declines.

Finally, there’s VMware, Inc. VMW, which lost more than 8 percent over the past five days, and 2.37 percent in Friday trading. However, it is up more than 2.4 percent in after-hours, apparently starting to recuperate from a tough week.