---
ticker: "MMK"
name: "State Street Prime Money Market ETF"
url: "https://etf.net/etf/MMK"
grade: "C"
score: 48
graded_at: "2026-10-12"
category: "Cash & Ultra-Short Income"
category_rank: "62 of 78"
methodology: "https://etf.net/methodology"
---

# MMK: State Street Prime Money Market ETF

Grade **C**, Score 48 of 100. Rank 62 of 78 in Cash & Ultra-Short Income.

Graded Oct 12, 2026.

## Grade pillars

| Pillar | Score | Category rank |
| --- | --- | --- |
| Cost | 56 | 31 of 78 |
| Mission | Not scored | — |
| Risk | 49 | 42 of 75 |
| Tradability | 38 | 52 of 78 |
| Holdings | 44 | 56 of 77 |
| Durability | 45 | 51 of 78 |

## Top holdings

The fund holds 74 positions. These are the largest 30, by weight.

| # | Ticker | Name | Weight |
| --- | --- | --- | --- |
| 1 | — | Goldman Sacs Tri Party D Repo | 8.38% |
| 2 | — | Mizuho Securities Usa Tri A Repo | 6.90% |
| 3 | — | Rbc Dominion Securities Tri Pa Tri Party Repo D | 6.90% |
| 4 | — | Td Securities Usa Tri Party Tri B Repo | 3.45% |
| 5 | — | Ryl Bnk of Scot Tri A Repo | 3.45% |
| 6 | — | Verto Cap I Compartment 10/26 Zcp | 2.07% |
| 7 | — | Anglesea Fdg PLC & Ang | 1.72% |
| 8 | — | Barclays Bank Uk | 1.72% |
| 9 | — | Mackinac Funding | 1.53% |
| 10 | — | Verto Cap I 144A Disc Coml Pap 11/26 Zcp | 1.38% |
| 11 | — | Bpce | 1.28% |
| 12 | — | Bank Montreal Chicago Brh | 1.21% |
| 13 | — | Nordea Bank Abp | 1.21% |
| 14 | — | Hsbc Bank PLC | 1.21% |
| 15 | — | Royal Bank of Canada | 1.21% |
| 16 | — | Swedbank Ab Publ Iam Coml Pape 02/27 Var | 1.21% |
| 17 | — | Kbc Bk NV Instl Ctf Dep Progra | 1.21% |
| 18 | — | Wells Fargo Bank Na | 1.21% |
| 19 | — | CREDIT AGRICOLE CIB TD - 16Oct26 | 1.21% |
| 20 | — | Merrill Lynch Tri Party E Repo | 1.21% |
| 21 | — | Park Ave Coll Notes | 1.21% |
| 22 | — | Norinchukin Bk New York Brh In | 1.21% |
| 23 | — | Norinchukin Bk New York Brh In | 1.21% |
| 24 | — | Mufg Bk Ltd | 1.21% |
| 25 | — | Bank Nova Scotia Houston Tex | 1.21% |
| 26 | — | United Overseas Bk Ltd | 1.21% |
| 27 | — | Credit Indl Et Coml Instl Ctf | 1.21% |
| 28 | — | Anglesea Fdg PLC & Ang | 1.21% |
| 29 | — | Chesham Fnc/ Chesh Llc | 1.21% |
| 30 | — | Aquitaine Fdg Co Llc | 1.21% |

Source: etf.net, https://etf.net/etf/MMK. Please cite the page URL.