The Basic Materials sector (XLB) showed little movement on a trading day that saw S&P 500 fall 0.6%.

Although it went in the opposite direction of the market today, the ETF tracked closer to the overall market today than over the past month. Entering today's trading, XLB was down 6.2% over the last thirty trading days while the S&P 500 was down 2.7%.

First Majestic Silver (AG) was a major loser in the sector, falling 10.8% (-$1.52) to close at $12.50 with 1.8 million shares moving. The stock traded between $12.35 and $14.11.

Increasing 9.9% (+98 cents) to close at $10.87, KiOR (KIOR) was a major gainer in the sector. Today, 353,097 shares traded hands. The stock traded in a range of $10.02 to $10.94.

NN (NNBR) rose 5.8% to close at $8.80, cross its 50-day moving average of $8.37 and 200-day moving average of $7.78. Agnico-Eagle Mines (AEM) declined 5% to close at $33.97, moving below its 50-day moving average of $35.49 and 200-day moving average of $39.18.

P.H. Glatfelter Company (GLT) rose 2.2% to close at $14.64, approaching its 50-day moving average of $15.40. It has also moved closer to its 200-day moving average of $15.06.