Rank Name Background 2001-2005
Given or pledged
MILLIONS
Estimated Lifetime Giving*
MILLIONS
Remaining Net Worth**
MILLIONS
Giving as a % of Net Worth***
1
Gordon and Betty Moore
Intel co-founder
7,046
7,300
4,600
159
2
Bill and Melinda Gates
Microsoft co-founder
5,458
27,976
51,000
55
3
Warren Buffett
Berkshire Hathaway CEO
2,622
2,730
40,000
7
4
George Soros
Investor
2,367
5,401
7,200
75
5
Eli and Edythe Broad
SunAmerica, KB Home founder
1,475
1,820
5,500
33
6
James and Virginia Stowers
American Century founder
1,205
1,575
716
220
7
Walton Family
Family of Wal-Mart founder
1,100
1,350
82,700
2
8
Alfred Mann
Medical devices
993
1,500
2,100
71
9
Michael and Susan Dell
Dell founder
933
1,230
18,000
7
10
George Kaiser
Oil and gas, banking, real estate
617
723
4,500
16
Given or pledged
MILLIONS
Estimated Lifetime Giving*
MILLIONS
Remaining Net Worth**
MILLIONS
Giving as a % of Net Worth***
1
Gordon and Betty Moore
Intel co-founder
7,046
7,300
4,600
159
2
Bill and Melinda Gates
Microsoft co-founder
5,458
27,976
51,000
55
3
Warren Buffett
Berkshire Hathaway CEO
2,622
2,730
40,000
7
4
George Soros
Investor
2,367
5,401
7,200
75
5
Eli and Edythe Broad
SunAmerica, KB Home founder
1,475
1,820
5,500
33
6
James and Virginia Stowers
American Century founder
1,205
1,575
716
220
7
Walton Family
Family of Wal-Mart founder
1,100
1,350
82,700
2
8
Alfred Mann
Medical devices
993
1,500
2,100
71
9
Michael and Susan Dell
Dell founder
933
1,230
18,000
7
10
George Kaiser
Oil and gas, banking, real estate
617
723
4,500
16