This past week of trading action saw crude oil futures weaving above and below the magic $100 per barrel figure before May 14 contracts surged more decisively during the Thursday and Friday sessions. The late-week spike came as a result of a significant ratcheting up of sanctions talk from the West in the wake of Russia making official it’s Crimean acquisition.

It remains to be seen how exactly President Obama and his allies might structure a sanctions regime in such a way as to leave US friends in Europe and elsewhere unscathed, and number of materials companies saw their shares slumping heavily over the possibility of further turmoil and uncertainty.

The following six basic materials companies concluded the week of trading lower for the Friday, and on volume at least twice the 3-month average. Most were also in the red for the full-week, suggesting that the investors and traders are unsure about how well these stocks will be able to hold up in the face of further rhetorical exchanges between the US and Russia.

Exterran Partners L.P. (EXLP) - Oil & Gas Equipment & Services

Market-Cap: $1.40 billion

Price: $28.63

Relative Volume (Average Volume Last 3 Months): 38.69 (89,950)

Performance for Week of March 23-28: -0.32 percent

Sinopec Shanghai Petrochemical Co. Ltd. ($SHI) - Oil & Gas Refining & Marketing

Market-Cap: $1.86 billion

Price: $25.99

Relative Volume (Average Volume Last 3 Months): 2.4 (11,850)

Performance for Week of March 23-28: -9.32 percent

CNOOOC Ltd. (CEO) - Oil & Gas Drilling & Exploration

Market-Cap: $66.36 billion

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Price: $153.11

Relative Volume (Average Volume Last 3 Months): 2.39 (190,400)

Performance for Week of March 23-28: -0.61 percent

FutureFuel Corp. (FF) - Major Diversified Chemicals

Market-Cap: $856.04 million

Price: $19.75

Relative Volume (Average Volume Last 3 Months): 2.21 (228,000)

Performance for Week of March 23-28: -6.97 percent

Rose Rock Midstream L.P. (RRMS) - Major Integrated Oil & Gas

Market-Cap: $956.98 million

Price: $41.46

Relative Volume (Average Volume Last 3 Months): 2.17 (38,870)

Performance for Week of March 23-28: +4.43 percent

Alamos Gold Inc. (AGI) - Gold

Market-Cap: $1.16 billlion

Price: $9.11

Relative Volume (Average Volume Last 3 Months): 2.04 (419,170)

Performance for Week of March 23-28: -8.81 percent

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