SIG Oil Exploration & Production Index (EPXSM)
Index
Date Divisor Reason for Change Shares
3/26/2008 Southwestern Energy Company (SWN) - 2 for 1 split 394
2/22/2008 540.8582 Apache Corp. (APA) - $.10 special cash dividend
2/1/2008 Quicksilver Resources, Inc. (KWK) - 2 for 1 stock split 366
1/22/2008 540.8813 January Quarterly Rebalancing
12/17/2007 Denbury Resources Inc. (DNR) - 2 for 1 stock split 406
12/14/2007 XTO Energy, Inc. (XTO) - 5 for 4 stock split 196
11/7/2007 538.3156 Deletion: Pogo Producing Company (PPP)
10/22/2007 563.2711 October Quarterly Rebalancing
8/3/2007 Ultra Petroleum Corporation (UPL) moves from AMEX to NYSE
7/23/2007 596.4071 July Quarterly Rebalancing
4/23/2007 662.9117 April Quarterly Rebalancing
4/2/2007 Cabot Oil & Gas Ltd. (COG) - 2 for 1 stock split 334
1/22/2007 737.0895 January Quarterly Rebalancing
10/23/2006 738.5426 October Quarterly Rebalancing
8/24/2006 773.1682 Addition: St. Mary Land & Exploration Co. (SM) 254
Deletion: Western Gas Resources, Inc. (WGR)
8/11/2006 773.6190 Addition: W&T Offshore Inc. (WTI) 318
Deletion: Kerr-McGee Corporation (KMG)
7/24/2006 773.8505 July Quarterly Rebalanicng
6/15/2006 Kerr-McGee Corp. (KMG) - 2 for 1 stock split 188
4/24/2006 680.3911 April Quarterly Rebalanicng
4/3/2006 684.0255 Addition: Denbury Resources, Inc. (DNR) 316
Deletion: Burlington Resources (BR)
3/31/2006 684.3760 Kerr-McGee Corp. (KMG) - Spinoff 101
3/3/2006 684.2474 Spin Off: Forest Oil Corporation 297
2/7/2006 684.2594 Addition:  Range Resources Company (RRC) 355
1/31/2006 652.7919 Deletion: Vintage Petroleum, Inc. (VPI)
1/23/2006 684.4995 January Quarterly Rebalanicng
12/14/2005 831.4931 Spinnaker Exploration Co. (SKE) acquired by Norsk Hydro ASA
Deletion: Spinnaker Exploration Co. (SKE)
Addition: Southwestern Energy Company (SWN) 274
10/24/2005 832.0209 October Quarterly Rebalancing
9/15/2005 Noble Energy, Inc. (NBL) - 2 for 1 stock split 256
7/19/2005 931.7824 Options began trading on the PHLX