The S&P 500 lost 1.7% while the Basic Materials sector (XLB) showed little movement during trading today.

The ETF has moved down across its 200-day moving average of $35.40 today. The ETF, as a proxy for the sector, tracked closer to the overall market today than over the past month. Entering today's trading, XLB was down 3.9% over the last thirty trading days while the S&P 500 climbed -1.2%.

Jaguar Mining Inc. (JAG) was a major gainer in the sector, rising 14.1% (+57 cents) to close at $4.61 with 8.9 million shares moving. The stock traded in a range of $4 to $4.93. The stock is down over the last three months, having fallen $2.22 (-32.5%) from $6.83 on January 11, 2012.

Haynes International, Inc. (HAYN) was one of the sector's big losers, as its price dropped 5.6% (-$3.48) to close at $58.24. 161,310 shares of the stock moved. The stock traded between $56.95 and $62.21. Shares are down, having dropped $6.37 (-9.9%) from a price of $64.61 on April 2, 2012.

NewMarket Corporation (NEU) declined 2.5% to close at $181.53, moving below its 50-day moving average of $186.19 and 200-day moving average of $186.81. Compania de Minas Buenaventura SA (ADR) (BVN) rose 4.9% to close at $41.93, cross its 50-day moving average of $40.07 and 200-day moving average of $40.58.

Aurizon Mines Ltd.(USA) (AZK) rose 4.5% to close at $4.67, approaching its 50-day moving average of $4.90. It has also moved closer to its 200-day moving average of $5.36. TPC Group, Inc. (TPCG) fell 4.6% to close at $41.50, moving closer to its 50-day moving average of $41.08. Also, the stock moved closer to its 200-day moving average of $34.98.

Terra Nitrogen Company, L.p. (TNH) hit a new 52-week high today, reaching $270.93 to top the previous high of $262.40.