Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000006773 | SDIT GOVERNMENT FUND | ||
| Class/Contract C000018362 | SDIT GOVERNMENT FUND - CLASS B | SEVXX | |
| Class/Contract C000018363 | SDIT GOVERNMENT FUND - CLASS C | SGOXX | |
| Class/Contract C000018364 | SDIT GOVERNMENT FUND - SWEEP CLASS (FORMER) | SGWXX | |
| Class/Contract C000018365 | SDIT GOVERNMENT FUND - INSTITUTIONAL, effective 1-17-2023 (formerly Class F) | SEOXX | |
| Class/Contract C000162326 | Class CAA | GFAXX | |
| Class/Contract C000240469 | SDIT GOVERNMENT FUND - SWEEP CLASS | AABXX | |
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000006774 | SDIT TREASURY II FUND | ||
| Class/Contract C000018366 | SDIT TREASURY II FUND - CLASS B | STBXX | |
| Class/Contract C000018367 | SDIT TREASURY II FUND - CLASS C | STWXX | |
| Class/Contract C000018368 | SDIT TREASURY II FUND - CLASS F, effective 1-31-2017 (formerly Class A) | SCPXX | |
| Class/Contract C000062069 | SDIT Treasury II Fund - Sweep Class | ||
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000006776 | SDIT GOVERNMENT II FUND | ||
| Class/Contract C000018373 | SDIT GOVERNMENT II FUND - CLASS B | SVBXX | |
| Class/Contract C000018374 | SDIT GOVERNMENT II FUND - CLASS F, effective 1-31-2017 (formerly Class A) | TCGXX | |
| Class/Contract C000018375 | SDIT GOVERNMENT II FUND - CLASS C | SGTXX | |
| Class/Contract C000062070 | SDIT Government II Fund - Sweep Class | ||
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000008266 | SDIT ULTRA SHORT DURATION BOND FUND | ||
| Class/Contract C000022551 | SDIT ULTRA SHORT DURATION BOND FUND - CLASS F, effective 1-31-2017 (formerly Class A) | SECPX | |
| Class/Contract C000062071 | SDIT Ultra Short Duration Bond Fund - Class B | ||
| Class/Contract C000062072 | SDIT Ultra Short Duration Bond Fund - Class C | ||
| Class/Contract C000073410 | SDIT Ultra Short Duration Bond Fund - Class G | ||
| Class/Contract C000158211 | Class Y | SECYX | |
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000008267 | SDIT SHORT DURATION GOVERNMENT FUND | ||
| Class/Contract C000022552 | SDIT SHORT DURATION GOVERNMENT FUND - CLASS F, effective 1-31-2017 (formerly Class A) | TCSGX | |
| Class/Contract C000062073 | SDIT Short Duration Government Fund - Class C | ||
| Class/Contract C000147419 | Class Y | SDGFX | |
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000008269 | SDIT GNMA FUND | ||
| Class/Contract C000022554 | SDIT GNMA FUND - CLASS F, effective 1-31-2017 (formerly Class A) | SEGMX | |
| Class/Contract C000147421 | Class Y | SGMYX | |
| Status | Name | Ticker Symbol | |
| CIK 0000701939 | |||
| Series S000008270 | SDIT TREASURY FUND | ||
| Class/Contract C000022555 | SDIT TREASURY FUND - CLASS F, effective 1-31-2017 (formerly Class A) | SEPXX | |
| Class/Contract C000022556 | SDIT TREASURY FUND - CLASS B | STYXX | |
| Class/Contract C000022557 | SDIT TREASURY FUND - CLASS C | SDCXX | |
| Class/Contract C000022558 | SDIT TREASURY FUND - SWEEP CLASS | SSWXX | |
IRS No.: 236756825 | State of Incorp.: MA | Fiscal Year End: 0131
Type: N-CEN | Act: 40 | File No.: 811-03451 | Film No.: 23823575