| 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 | 4.754 | 15.476 | 31% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 100000000 | 1% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 82.8M | 304B | 0% |
| Annual Yield % from dividends | 2.69 | 2.62 | 103% |
| Returns for 1 year | 4.23 | 28.97 | 15% |
| Returns for 3 years | 31.11 | 60.04 | 52% |
| Returns for 5 years | 21.51 | 40.71 | 53% |
| Returns for 10 years | N/A | 107.22 | - |