Despite of the rise in oil prices, U.S. stock market dropped down Monday, as concerns about Greece kept on to weigh.

During Monday’s trade:

• PostRock Energy Corporation (NASDAQ:PSTR), was the top gainer and the most volatile stock of the Basic Materials sector, and added 44.44% to the share, while it remained 34.54% volatile for the week and 20% for the month.
• SandRidge Energy Inc.(NYSE:SD), was among the top loser of the sector, losing -10.50% from the share.
• Star Gas Partners, L.P. (NYSE:SGU), hits new 52-week high of $7.24, and closed at $7.05.
• Alcoa Inc. (NYSE:AA) remained the most active stock, attaining volume of $31.12M.
• Geospace Technologies Corp (NASDAQ:GEOS), hits new 52-week low of $19.52, and settled at $19.99.
• PostRock Energy Corporation (NASDAQ:PSTR), showed an unusual incline of volume 368,007.00, as compared to its average volume of 92,678.00 for the last trading session.
• Diamond Offshore Drilling Inc(NYSE:DO), will release their earning report, before the market open today.

Details about some major gainers from basic material sector, during Monday’s trade are described below:

In basic material sector, PostRock Energy Corporation, (NASDAQ:PSTR), was among the top gainer category for Monday’s trade, with shares boost of 44.44% and led the share to close at $5.85, as an energy company, formerly offered an update. Summary is detailed under:

• 2014 production, at the realized 21:1 gas-to-oil economic equivalency, raised over 2% from the preceding-year.
• Oil production rose to 754 barrels per day, up 43% from the preceding-year. December 2014 oil production averaged 929 BOPD. Gas production declined 9% to just over 36.2 MMcf per day.
• Proceed raised over 15% from the preceding-year.
• Total operating expenses, counting lease operating, gathering and G&A, reduced about $1.3 million from the preceding year.
• Bank debt reduced nearly 10% to $83 million during the year.
• Cost reduction initiatives being implemented in 2015 are predictable to further reduce operating costs by nearly $4.0 million annually.
• On a preliminary basis the 2015 capital budget is set at $5.5 million, a reduction of over 80% from the preceding year. This level of expenditures may be raised, depending on oil and gas prices.
• For 2015, about 73% and 28%, respectively, of the Company’s anticipated natural gas and oil production is hedged at $4.01 per Mmbtu and $92.73 per Bbl. Hedges are in place through the end of 2016.

PostRock Energy Corporation, (NASDAQ:PSTR), also remained most volatile stock for the previous trading session, and its volatility for the week is 34.54%, while for the month is 26.20%.

PostRock Energy Corporation, (NASDAQ:PSTR), is engaged in the attainment, exploration, development, production and gathering of crude oil and natural gas. Its primary production activity is focused in the Cherokee Basin, a 15-county region in southeast Kansas and northeast Oklahoma, and in Central Oklahoma.

Shares of Swift Energy Co. (NYSE:SFY), jumped nearly 14.83% to close at $3.02, also included in the category of top gainers. It was also the volatile stock during the previous trade and its volatility for the week is 13.67%, while for the month is 11.75%.

Swift Energy Co. (NYSE:SFY), formerly stated its fourth quarter and year-end 2014 financial and operational results on Thursday, February 26, 2015 by issuing a news release before the market opens and conducting a conference call to talk about such results on that date at 9:00 a.m. CST. To take part in this conference call, dial 877-420-2751 five to ten minutes before the planned start time and indicate your intention to take part in the Swift Energy conference call. A digital replay of the call will also be accessible two hours after the call’s completion on February 26 until March 12, by dialing 855-859-2056 and using Conference ID # 73572178. Additionally, the conference call replay will be accessible over the internet by accessing the Company’s website at www.swiftenergy.com and by clicking on the event hyperlink. This webcast will be accessible online and archived at the Company’s website for about two weeks after the call.

Swift Energy Co. (NYSE:SFY), founded in 1979 and headquartered in Houston, engages in developing, exploring, acquiring and operating oil and gas properties, with a focus on oil and natural gas reserves onshore in Texas and Louisiana and in the inland waters of Louisiana.

Miller Energy Resources, Inc. (NYSE:MILL), surged 14.77% to close at $2.02, and is among the volatile stock for the last trade. The stock’s volatility for the week is 17.07%, while, for the month is 12.65%.

Miller Energy Resources, Inc. (NYSE:MILL), formerly declared that its Board of Directors has confirmed a semi-annual cash dividend on Company’s Series B Redeemable Preferred Stock and a quarterly cash dividend payment on the Company’s 10.75% Series C Cumulative Redeemable Preferred Stock and its 10.5% Series D Fixed Rate/Floating Rate Cumulative Redeemable Preferred Stock. The dividend on the Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock is expected to be paid on Monday, March 2, 2015, to holders of record at the close of business on Friday, February 13, 2015.

Miller Energy Resources, Inc. (NYSE:MILL), is a domestic oil and natural gas exploration and production focused on Alaska. The Company’s enterprises encompass production and reserves onshore and offshore in the Cook Inlet area in addition to the North Slope, about 100MBPD of storage and processing infrastructure, the Osprey offshore production platform, oil and gas pipelines and four owned drilling rigs.

Shares of the Paragon Offshore, (NYSE:PGN), gained 13.18% & closed at $3.35. It remained volatile for the last trade, however, its volatility for the week is 15.86%, while for the month remained 11.94%.

Paragon Offshore, (NYSE:PGN), formerly declared that it plans to report financial results for the fourth quarter and full year 2014 on Thursday, February 19, 2015, after the close of trading on the New York Stock Exchange. Paragon also has planned a teleconference and webcast related to its fourth quarter and full year 2014 results on Friday, February 20, 2015, at 8:00 a.m. U.S. Central Standard Time. The teleconference can be accessed from the U.S. and Canada by dialing 1-888-771-4371, or internationally by dialing 1-847-585-4405, and using access code: 38946331. Interested parties may also listen to the webcast through a link posted on Paragon’s website at www.paragonoffshore.com, under “Events & Presentations” in the “Investor Relations” section of the website.

Paragon Offshore, (NYSE:PGN), is a global provider of offshore drilling rigs. Paragon’s drilling fleet comprises 33 jackups and eight floaters (five drillships and three semisubmersibles). In addition, Paragon is the majority shareholder of Prospector Offshore Drilling S.A., a publicly traded offshore drilling company on the Oslo Axess stock exchange that owns and operates two high specification jackups.

Parker Drilling Co. (NYSE:PKD), mounted 10.88% to close at $3.67. The company remained volatile for the last trade. Its volatility for the week is 8.32%, while for the month remained 6.93%.

Parker Drilling Co. (NYSE:PKD), formerly declared that it intends to report its 2014 Fourth Quarter financial results on Wednesday, February 18, 2015. The Company anticipates to issue its earnings report on the evening of Wednesday, February 18, 2015 and will follow with a conference call on the morning of Thursday, February 19, 2015 at 10:00 a.m. Central Time (11:00 a.m. Eastern Time) to review the details of the report. Those interested in listening to the call by telephone may do so by dialing (888) 510-1786. Alternatively, the call can be accessed through the Investor Relations section of the Company’s website at http://www.parkerdrilling.com.

Parker Drilling Co. (NYSE:PKD), provides contract drilling and drilling-related services and rental tools to the energy industry. The Company’s drilling business serves operators in the inland waters of the U.S. Gulf of Mexico utilizing Parker’s barge rig fleet and in select U.S. and international markets and harsh-environment regions utilizing Parker-owned and customer-owned equipment.