Following U.S. Stocks were among the “Top Losers” during Monday’s trade: Opexa Therapeutics Inc (NASDAQ:OPXA), Basic Energy Services, Inc (NYSE:BAS), Chesapeake Energy Corporation (NYSE:CHK), Swift Energy Company (NYSE:SFY)

Their insights are depicted underneath:

Opexa Therapeutics Inc (NASDAQ:OPXA)’s shares dwindled -6.23%, and closed at $0.760.

Through BUSINESS WIRE, Opexa Therapeutics, Inc. (OPXA), a corporation developing personalized immunotherapies for autoimmune disorders, counting multiple sclerosis (MS) and neuromyelitis optica (NMO), released that it has amended its option and license contract with Merck Serono (a division of Merck, Darmstadt, Germany) and will receive a $3 million payment. The payment provides support for the ongoing Phase 2b clinical study of Tcelna® (imilecleucel-T), Opexa’s personalized immunotherapy in development for patients with Secondary Progressive MS (SPMS), in addition to the preparation and planning of potential Phase 3 studies.

“Tremendous progress has been achieved in the treatment of multiple sclerosis over the past two decades but there remains a high unmet medical need for certain areas of the disease,” said Belén Garijo, Member of the Executive Board of Merck and CEO Healthcare. “Building on our strong heritage in multiple sclerosis, we will continue to focus our innovation efforts on areas where we can make a difference, such as secondary progressive multiple sclerosis where there are presently very limited therapeutic options. The additional support to Opexa to further develop Tcelna (imilecleucel-T) is another sign of our long-standing and ongoing commitment to improving the lives of people living with multiple sclerosis.”

Opexa and Merck Serono reached the original option and license contract for the development and commercialization of Tcelnain MS in February of 2013, at which time Opexa received a $5 million upfront payment. Following the original contract, Merck Serono has an option to attain an exclusive, worldwide (not including Japan) license of Opexa’s Tcelna program for the treatment of MS. The option may be exercised by Merck Serono preceding to or upon completion of Opexa’s ongoing Phase 2b Abili-T trial of Tcelna in patients with SPMS. Top-line data from the Abili-T trial is predictable in the second half of 2016. Tcelna has received Fast Track Designation from the U.S. Food and Drug Administration for SPMS.

Opexa is a biopharmaceutical corporation developing a personalized immunotherapy with the potential to treat major illnesses, counting multiple sclerosis (MS) in addition to other autoimmune diseases such as neuromyelitis optica (NMO).

Basic Energy Services, Inc (NYSE:BAS), declined -6.14%, and closed at $7.19. The stock has the beta value of 2.38, and its volatility for the week is 6.94%, while for the month it is 7.30%. The company has the market capitalization of $320.56M. The mean recommendation of analysts for this stock is 2.50.(where 1=Buy, 5=Sale).

Basic Energy Services, Inc. provides well site services to oil and natural gas drilling and producing companies in the United States. Its Completion and Remedial Services segment offers pumping services, such as cementing, acidizing, fracturing, nitrogen, and pressure testing; rental and fishing tools; coiled tubing; snubbing services; thru-tubing; cased-hole wireline services; and underbalanced drilling in low pressure and fluid sensitive reservoirs.

Chesapeake Energy Corporation (NYSE:CHK), dipped -6.13%, and closed at $14.24, hitting new 52-week low of $14.22.

Through BUSINESS WIRE, Chesapeake Energy Corporation (CHK), released that its Board of Directors has declared a $0.0875 per share quarterly dividend that will be paid on April 30, 2015 to ordinary shareholders of record on April 15, 2015.

Chesapeake Energy Corporation (CHK) is the second-largest producer of natural gas and the 11th largest producer of oil and natural gas liquids in the U.S. Headquartered in Oklahoma City, the corporation’s operations are focused on discovering and developing its large and geographically diverse resource base of unconventional oil and natural gas assets onshore in the U.S.

Swift Energy Company (NYSE:SFY), dropped -6.09%, and closed at $2.93.

Through BUSINESS WIRE, Swift Energy Co. (SFY), stated its 2014 year-end and fourth quarter financial and operating results.

Fourth Quarter and Full-Year 2014 Results:

• Swift Energy’s full year 2014 production was 12.39 MMBoe, an raise of 5% contrast to 2013 production of 11.75 MMBoe. Production for the fourth quarter 2014 of 3.00 MMBoe was roughly flat with third quarter 2014 levels and reduced 3% contrast to fourth quarter 2013 production of 3.09 MMBoe.
• Full year production in the Eagle Ford, where about 85% of 2014 capital spending was directed, was 8.39 MMBoe, an raise of 32% from 2013 production of 6.36 MMBoe.
• Terry Swift noted, “Not including the influence from our sale in Fasken to Saka Energi, Eagle Ford production would have raised 46% year-to-year. Even after this sale of production volumes, we achieved a corporate wide year end net exit rate of about 38,000 Boe/d.”
• Swift Energy stated an adjusted net loss for the fourth quarter of 2014 of $10.9 million, or $0.25 per diluted share, which excludes the non-cash ceiling test write-down of its oil and gas properties of $445.4 million (a pre-tax and non-GAAP measure – see page 9 for reconciliation to the GAAP measure). This compares to adjusted net revenue of $4.7 million, or $0.11 per diluted share earned in the same quarter in 2013.
• The GAAP net loss for the fourth quarter 2014 was $298.2 million, or $6.80 per diluted share. This compares to GAAP net loss of $25.4 million, or $0.58 per diluted share earned in the same quarter in 2013, which also had a non-cash ceiling write-down.
• The GAAP net loss for the full year 2014 is $283.4 million, or $6.47 per diluted share. This compares to a GAAP net loss of $2.4 million, or $0.06 per diluted share for the full year 2013.
• Cash flow before working capital changes (a non-GAAP measure - see page 9 for reconciliation to the GAAP measure) for the full year 2014 of $283.3 million reduced 9% contrast to $310.8 million for the full year 2013. Fourth quarter 2014 cash flow before working capital changes (a non-GAAP measure - see page 9 for reconciliation to the GAAP measure) of $44.6 million reduced 41% contrast to $76.0 million of adjusted cash flow for the fourth quarter of 2013.
• Total proceeds for the fourth quarter of 2014 of $110.5 million reduced 23% from the $143.1 million of proceeds generated in the fourth quarter of 2013. This decrease is primarily attributable to lower oil and NGL prices, coupled with slightly lower overall production volumes.
• Depreciation, depletion and amortization expense (“DD&A”) of $22.17 per barrel of oil equivalent (“Boe”) in the fourth quarter of 2014 raised 5% from $21.11 per Boe from the comparable period in 2013, primarily due to lower production.
• The non-cash oil and gas property ceiling test write-down of $445.4 million was the result of the decline in the Corporation’s year-end 2014 SEC reserves value.
• Lease operating expenses, not including transportation and processing expense and before severance and ad valorem taxes, were $7.53 per Boe in the fourth quarter 2014, generally in-line with the preceding year amounts.
• Severance and ad valorem taxes reduced to $2.74 per Boe in the fourth quarter 2014 from $3.40 per Boe in the fourth quarter of 2013, primarily due to higher production in South Texas, which carries a lower severance tax rate than in Louisiana.
• General and administrative expenses of $2.02 per Boe during the fourth quarter of 2014 were down from $3.35 per Boe in the same period in 2013, primarily due to lower compensation and accrued benefit costs.
• Interest expense raised to $5.97 per Boe in the fourth quarter of 2014 contrast to $5.85 per Boe for the same period in 2013.

Swift Energy Corporation, an independent oil and gas corporation, attains, explores, develops, and operates oil and gas properties. The corporation focuses on the Eagle Ford trend of South Texas, in addition to the onshore and inland waters of Louisiana.