|
Closing price on 1/7/2011
|
|
| Open |
28.50 |
| High |
29.00 |
| Low |
28.50 |
| Volume |
5,000 |
| Split-adjusted Price |
6.84 |
|
|
PSC Historical Quote
|
Date
|
Change
|
Open
|
High
|
Low
|
Close
|
Average
|
Adjusted Close
|
Volume
|
|
|
1/7/2011
|
+0.50 / +1.75%
|
28.50
|
29.00
|
28.50
|
29.00
|
28.90
|
6.84
|
5,000
|
|
|
1/6/2011
|
-1.50 / -5.00%
|
28.50
|
28.50
|
28.50
|
28.50
|
28.50
|
6.72
|
700
|
|
|
1/5/2011
|
-2.10 / -6.54%
|
30.00
|
30.00
|
30.00
|
30.00
|
30.00
|
7.08
|
300
|
|
|
1/4/2011
|
-2.50 / -7.23%
|
32.10
|
32.10
|
32.10
|
32.10
|
32.10
|
7.57
|
1,000
|
|
|
12/31/2010
|
-0.30 / -0.86%
|
32.40
|
34.60
|
32.40
|
34.60
|
34.45
|
8.16
|
236,700
|
|
|
12/30/2010
|
-0.10 / -0.29%
|
32.30
|
34.90
|
32.30
|
34.90
|
34.84
|
8.23
|
465,200
|
|
|
12/29/2010
|
+1.60 / +4.79%
|
31.10
|
35.00
|
31.10
|
35.00
|
34.67
|
8.26
|
270,100
|
|
|
12/28/2010
|
-0.50 / -1.47%
|
33.40
|
33.40
|
33.40
|
33.40
|
33.40
|
7.88
|
26,700
|
|
|
12/27/2010
|
-2.80 / -7.63%
|
33.90
|
35.90
|
33.90
|
33.90
|
35.88
|
8.00
|
461,400
|
|
|
12/24/2010
|
+3.70 / +11.21%
|
33.40
|
36.70
|
33.30
|
36.70
|
36.39
|
8.66
|
447,400
|
|
|
12/23/2010
|
+2.00 / +6.45%
|
36.00
|
36.00
|
31.90
|
33.00
|
35.74
|
7.78
|
32,600
|
|
|
12/22/2010
|
0.00 / 0.00%
|
33.50
|
33.90
|
31.00
|
31.00
|
33.78
|
7.31
|
45,900
|
|
|
12/21/2010
|
0.00 / 0.00%
|
29.50
|
32.90
|
29.00
|
31.00
|
32.23
|
7.31
|
52,000
|
|
|
12/20/2010
|
+1.10 / +3.68%
|
30.90
|
31.00
|
29.70
|
31.00
|
30.89
|
7.31
|
10,900
|
|
|
12/17/2010
|
+2.30 / +8.33%
|
29.00
|
29.90
|
29.00
|
29.90
|
29.74
|
7.05
|
10,300
|
|
|
12/16/2010
|
-0.80 / -2.82%
|
28.30
|
28.50
|
27.60
|
27.60
|
28.45
|
6.51
|
152,900
|
|
|
12/15/2010
|
-0.20 / -0.70%
|
28.10
|
28.50
|
28.00
|
28.40
|
28.32
|
6.70
|
25,900
|
|
|
12/14/2010
|
-0.40 / -1.38%
|
27.00
|
28.60
|
27.00
|
28.60
|
28.41
|
6.75
|
75,500
|
|
|
12/13/2010
|
+1.80 / +6.62%
|
29.00
|
29.00
|
27.10
|
29.00
|
28.17
|
6.84
|
197,200
|
|
|
12/10/2010
|
-1.00 / -3.55%
|
29.20
|
29.20
|
26.70
|
27.20
|
27.61
|
6.42
|
5,400
|
|
|
12/9/2010
|
+1.70 / +6.42%
|
26.40
|
28.20
|
26.40
|
28.20
|
27.84
|
6.65
|
3,800
|
|
|
12/8/2010
|
-0.30 / -1.12%
|
26.50
|
26.50
|
26.50
|
26.50
|
26.50
|
6.25
|
3,800
|
|
|
12/7/2010
|
-0.80 / -2.90%
|
26.30
|
27.00
|
26.30
|
26.80
|
26.62
|
6.32
|
6,500
|
|
|
12/6/2010
|
-0.20 / -0.72%
|
27.80
|
28.10
|
27.60
|
27.60
|
27.73
|
6.51
|
5,900
|
|
|
12/3/2010
|
+0.30 / +1.09%
|
27.80
|
27.80
|
27.00
|
27.80
|
27.54
|
6.56
|
4,500
|
|
|
12/2/2010
|
-1.20 / -4.18%
|
26.00
|
27.80
|
26.00
|
27.50
|
27.05
|
6.49
|
3,900
|
|
|
12/1/2010
|
+1.00 / +3.61%
|
26.10
|
28.80
|
26.10
|
28.70
|
27.03
|
6.77
|
2,800
|
|
|
11/30/2010
|
+2.20 / +8.63%
|
26.00
|
27.70
|
26.00
|
27.70
|
27.69
|
6.53
|
35,700
|
|
|
11/29/2010
|
-1.60 / -5.90%
|
26.20
|
27.10
|
25.30
|
25.50
|
25.91
|
6.01
|
52,100
|
|
|
11/26/2010
|
-0.40 / -1.45%
|
27.20
|
27.40
|
27.10
|
27.10
|
27.24
|
6.39
|
25,400
|
|
|