| NSIVX | VDIPX | NSIVX / VDIPX | |
| Total Expense Ratio | 0.98 | 0.02 | 4,900% |
| Annual Report Gross Expense Ratio | 1.13 | 0.02 | 5,650% |
| Fund Existence | 6 years | 12 years | - |
| Gain YTD | 8.674 | 13.800 | 63% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 100000000 | 1% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 84.9M | 316B | 0% |
| Annual Yield % from dividends | 2.65 | 2.55 | 104% |
| Returns for 1 year | 8.48 | 25.43 | 33% |
| Returns for 3 years | 31.88 | 53.03 | 60% |
| Returns for 5 years | 28.24 | 40.44 | 70% |
| Returns for 10 years | N/A | 107.77 | - |