Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer.

One out of the three major indices are trading lower today with the

Dow Jones Industrial Average

(

^DJI

) trading down 2 points (0.0%) at 17,750 as of Thursday, July 30, 2015, 1:05 PM ET. The NYSE advances/declines ratio sits at 1,461 issues advancing vs. 1,490 declining with 187 unchanged.

The Basic Materials sector currently sits down 1.0% versus the S&P 500, which is unchanged. On the negative front, top decliners within the sector include

Vale

(

VALE

), down 5.2%,

Marathon Petroleum

(

MPC

), down 4.2%,

Valero Energy

(

VLO

), down 3.2%,

Enterprise Products Partners

(

EPD

), down 2.8% and

PetroChina

(

PTR

), down 2.5%. Top gainers within the sector include

Suncor Energy

(

SU

), up 5.6%,

Imperial Oil

(

IMO

), up 2.8% and

BP

(

BP

), up 0.6%.

TheStreet would like to highlight 3 stocks pushing the sector lower today:

3.

Southern Copper

(

SCCO

) is one of the companies pushing the Basic Materials sector lower today. As of noon trading, Southern Copper is down $0.71 (-2.5%) to $27.24 on average volume. Thus far, 896,282 shares of Southern Copper exchanged hands as compared to its average daily volume of 1.3 million shares. The stock has ranged in price between $27.13-$27.92 after having opened the day at $27.92 as compared to the previous trading day's close of $27.95.

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Southern Copper Corporation engages in mining, exploring, smelting, and refining copper and other minerals in Peru, Mexico, Argentina, Chile, and Ecuador. Southern Copper has a market cap of $21.8 billion and is part of the metals & mining industry. Shares are down 0.9% year-to-date as of the close of trading on Wednesday. Currently there are 3 analysts that rate Southern Copper a buy, no analysts rate it a sell, and 4 rate it a hold.

TheStreet Ratings rates

Southern Copper

as a

hold

. The company's strengths can be seen in multiple areas, such as its expanding profit margins, largely solid financial position with reasonable debt levels by most measures and notable return on equity. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, weak operating cash flow and a generally disappointing performance in the stock itself. Get the full

Southern Copper Ratings Report

now.

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2. As of noon trading,

Petroleo Brasileiro SA Petrobras

(

PBR

) is down $0.32 (-4.5%) to $6.75 on average volume. Thus far, 14.4 million shares of Petroleo Brasileiro SA Petrobras exchanged hands as compared to its average daily volume of 29.5 million shares. The stock has ranged in price between $6.75-$7.19 after having opened the day at $7.19 as compared to the previous trading day's close of $7.07.

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Petroleo Brasileiro S.A. - Petrobras operates as an integrated energy company in Brazil and internationally. Petroleo Brasileiro SA Petrobras has a market cap of $43.0 billion and is part of the energy industry. Shares are down 3.1% year-to-date as of the close of trading on Wednesday. Currently there are 3 analysts that rate Petroleo Brasileiro SA Petrobras a buy, 1 analyst rates it a sell, and 5 rate it a hold.

TheStreet Ratings rates

Petroleo Brasileiro SA Petrobras

as a

sell

. The company's weaknesses can be seen in multiple areas, such as its disappointing return on equity, generally high debt management risk, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share. Get the full

Petroleo Brasileiro SA Petrobras Ratings Report

now.

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1. As of noon trading,

Freeport-McMoRan

(

FCX

) is down $0.75 (-6.0%) to $11.75 on average volume. Thus far, 14.4 million shares of Freeport-McMoRan exchanged hands as compared to its average daily volume of 19.3 million shares. The stock has ranged in price between $11.70-$12.49 after having opened the day at $12.30 as compared to the previous trading day's close of $12.50.

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Freeport-McMoRan Inc., a natural resource company, engages in the acquisition of mineral assets, and oil and natural gas resources. It primarily explores for copper, gold, molybdenum, cobalt, silver, and other metals, as well as oil and gas. Freeport-McMoRan has a market cap of $12.8 billion and is part of the metals & mining industry. Shares are down 46.5% year-to-date as of the close of trading on Wednesday. Currently there are 8 analysts that rate Freeport-McMoRan a buy, 1 analyst rates it a sell, and 3 rate it a hold.

TheStreet Ratings rates

Freeport-McMoRan

as a

sell

. The company's weaknesses can be seen in multiple areas, such as its deteriorating net income, generally high debt management risk, disappointing return on equity, weak operating cash flow and generally disappointing historical performance in the stock itself. Get the full

Freeport-McMoRan Ratings Report

now.

EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE.

If you are interested in one of these 3 stocks, ETFs may be of interest. Investors who are bullish on the basic materials sector could consider

Materials Select Sector SPDR

(

XLB

) while those bearish on the basic materials sector could consider

ProShares Short Basic Materials Fd

(

SBM

).