On a trading day that saw the S&P 500 gain 0.5%, the Basic Materials sector (XLB) showed little change.

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 up 2.6% over the last thirty trading days. The S&P 500, in comparison, went up 3.7%.

Innophos Holdings (IPHS) was a major loser in the sector, falling 10.4% (-$5.90) to close at $50.94 with 976,421 shares moving. The stock traded in a range of $50.06 to $56. The stock has seen some negative movement recently as shares are down $7.03 (-12.1%) from a price of $57.97 on July 31, 2012.

Ampco-Pittsburgh (AP) was a significant gainer in the sector, rising 7.9%. The stock closed at $17.70 with 37,959 shares moving. The stock traded in a range of $16.52 to $17.93. The stock has seen some positive movement recently as shares are up $1.99 (12.7%) from a price of $15.71 on July 31, 2012.

Scotts Miracle-Gro (SMG) rose 3.1% to close at $41.01, cross its 50-day moving average of $39.79 and 200-day moving average of $45.32. ADA-ES (ADES) declined 3.9% to close at $22.97, moving below its 50-day moving average of $23.56 and 200-day moving average of $23.94.

Precision Castparts (PCP) rose 1.9% to close at $159.57, approaching its 50-day moving average of $161.53. It has also moved closer to its 200-day moving average of $166.82.

Rentech Nitrogen Partners (RNF) hit a new 52-week high today, reaching $32.82 to top the previous high of $31.34.