BlackRock Financial Institutions Series Trust Summit Cash Reserves Fund Institutional
                        MSIXX
                    
                    
                            NASDAQ
                    
                | Weiss Ratings | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Rating | ||||
| Reward Index | Fair | |||
| Reward Grade | C | |||
| Risk Index | Fair | |||
| Risk Grade | C+ | |||
| Company Info | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Provider | BlackRock | |||
| Manager/Tenure (Years) | Management Team (26) | |||
| Website | http://www.blackrock.com | |||
| Fund Information | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Fund Name | BlackRock Financial Institutions Series Trust Summit Cash Reserves Fund Institutional | |||
| Category | Money Market-Taxable | |||
| Sub-Category | US Money Market | |||
| Prospectus Objective | Money Mkt - Government | |||
| Inception Date | Jul 15, 2019 | |||
| Open/Closed To New Investors | Open | |||
| Minimum Initial Investment | 2,000,000.00 | |||
| Minimum Subsequent Investment | -- | |||
| Front End Fee | -- | |||
| Back End Fee | -- | |||
| Dividends and Shares | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Dividend Yield | 4.05% | |||
| Dividend | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Dividend Yield (Forward) | -- | |||
| Asset Allocation | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Cash | 69.05% | |||
| Stock | 0.00% | |||
| U.S. Stock | 0.00% | |||
| Non-U.S. Stock | 0.00% | |||
| Bond | 30.95% | |||
| U.S. Bond | 30.95% | |||
| Non-U.S. Bond | 0.00% | |||
| Preferred | 0.00% | |||
| Convertible | 0.00% | |||
| Other Net | 0.00% | |||
| Price History | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| 7-Day Total Return | 0.07% | |||
| 30-Day Total Return | 0.32% | |||
| 60-Day Total Return | 0.65% | |||
| 90-Day Total Return | 0.96% | |||
| Year to Date Total Return | 3.34% | |||
| 1-Year Total Return | 4.04% | |||
| 2-Year Total Return | 9.30% | |||
| 3-Year Total Return | 14.15% | |||
| 5-Year Total Return | 15.03% | |||
| Price | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Closing Price | -- | |||
| 1-Month Low Price | -- | |||
| 1-Month High Price | -- | |||
| 52-Week Low Price | -- | |||
| 52-Week Low Price (Date) | -- | |||
| 52-Week High Price | -- | |||
| 52-Week High Price (Date) | -- | |||
| NAV | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Nav | $1.00 | |||
| 1-Month Low NAV | $1.00 | |||
| 1-Month High NAV | $1.00 | |||
| 52-Week Low NAV | $1.00 | |||
| 52-Week Low NAV (Date) | Nov 01, 2024 | |||
| 52-Week High NAV | $1.00 | |||
| 52-Week High Price (Date) | Oct 31, 2025 | |||
| Beta / Standard Deviation | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Beta | -- | |||
| Standard Deviation | 0.18 | |||
| Balance Sheet | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Total Assets | 1.13B | |||
| Operating Ratios | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Expense Ratio | 0.42% | |||
| Turnover Ratio | 4.92% | |||
| Performance | MSIXX-NASDAQ | Click to Compare  | 
            Click to Compare  | 
            Click to Compare  | 
                                            
| Last Bull Market Total Return | 2.82% | |||
| Last Bear Market Total Return | 0.08% | |||