| 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 | 6.005 | 16.033 | 37% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 100000000 | 1% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 83.1M | 317B | 0% |
| Annual Yield % from dividends | 2.69 | 2.62 | 103% |
| Returns for 1 year | 8.81 | 31.38 | 28% |
| Returns for 3 years | 31.00 | 62.89 | 49% |
| Returns for 5 years | 24.66 | 42.76 | 58% |
| Returns for 10 years | N/A | 123.93 | - |