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Super Investors U.S. Total Bond Index Master Portfolio

U.S. Total Bond Index Master Portfolio

Master Investment Portfolio · net assets $3.28B · 9809 holdings as of June 30, 2026. Monthly N-PORT disclosure: the full book, not just equities.

Asset mix

DBT: 68.4% · ABS-MBS: 23.1% · STIV: 8.3% · ABS-O: 0.2%

Financial position

Total assets
$3.74B
Total liabilities
$452M
Net assets
$3.28B
Assets attributable to miscellaneous securities
$0
Assets invested in controlled foreign corporations
$0
Borrowings payable within one year
$0
Payable to controlled companies within one year
$0
Payable to other affiliates within one year
$0
Other liabilities payable within one year
$0
Borrowings payable after one year
$0
Payable to controlled companies after one year
$0
Payable to other affiliates after one year
$0
Other liabilities payable after one year
$0
Payables for delayed-delivery investments
$1.47M
Payables for standby commitments
$0
Liquidation preference of outstanding preferred stock
$0
Cash not reported in Parts C or D
$0

Monthly flows and gains

Month 1 Month 2 Month 3
Sales $92.2M $111M $111M
Reinvestment $0 $0 $0
Redemptions $90M $76.9M $539M
Net realized gain (non-derivative) $-501K $-605K $-21.4M
Net unrealized appreciation (non-derivative) $-6.82M $-349K $16.4M

The three months of the reporting period, as filed; month 3 ends June 30, 2026.

Credit spread risk (change in value per 1bp spread move)

Tenor Investment grade Non-investment grade
3 months $4.56 $1.58K
1 year $26.9K $0
5 years $517K $16.7
10 years $228K $0
30 years $274K $0

Filing details

Registrant
Master Investment Portfolio
Registrant CIK
915092
Registrant LEI
5493004HQXF0DFT60U28
Series
U.S. Total Bond Index Master Portfolio
Series ID
S000004287
Series LEI
549300QI52DSLLI6VD30
SEC file number
811-08162
Address
100 Bellevue Parkway, Wilmington, US-DE, 19809, US
Phone
800-441-7762
Form
NPORT-P
Filed
August 25, 2026
Report period ends
December 31, 2026
Report month ends
June 30, 2026
Accession number
000141036826085664
Holding Value % of net assets
Blackrock Funds Iii STIV $199M 6.06%
Blackrock Cash Funds STIV $90.8M 2.76%
United States Treasury DBT $20.2M 0.62%
United States Treasury DBT $17M 0.52%
United States Treasury DBT $17M 0.52%
United States Treasury DBT $16.7M 0.51%
United States Treasury DBT $16.7M 0.51%
United States Treasury DBT $16.3M 0.50%
United States Treasury DBT $15.7M 0.48%
United States Treasury DBT $15M 0.46%
United States Treasury DBT $14.9M 0.45%
United States Treasury DBT $14.7M 0.45%
United States Treasury DBT $14.6M 0.44%
United States Treasury DBT $14.5M 0.44%
United States Treasury DBT $14.4M 0.44%
United States Treasury DBT $14.4M 0.44%
United States Treasury DBT $14.1M 0.43%
United States Treasury DBT $13.8M 0.42%
United States Treasury DBT $13.3M 0.40%
United States Treasury DBT $12.5M 0.38%
United States Treasury DBT $12.4M 0.38%
United States Treasury DBT $12.3M 0.38%
United States Treasury DBT $12.2M 0.37%
United States Treasury DBT $12.1M 0.37%
United States Treasury DBT $12M 0.37%
United States Treasury DBT $11.9M 0.36%
United States Treasury DBT $11.8M 0.36%
Government National Mortgage Association ABS-MBS $11.7M 0.36%
United States Treasury DBT $11.4M 0.35%
Fannie Mae ABS-MBS $11.2M 0.34%
United States Treasury DBT $10.7M 0.33%
United States Treasury DBT $10.5M 0.32%
United States Treasury DBT $10.4M 0.32%
United States Treasury DBT $10.3M 0.31%
United States Treasury DBT $10.3M 0.31%
United States Treasury DBT $10.2M 0.31%
United States Treasury DBT $10.1M 0.31%
Freddie Mac ABS-MBS $10.1M 0.31%
United States Treasury DBT $9.96M 0.30%
Fannie Mae ABS-MBS $9.93M 0.30%
United States Treasury DBT $9.9M 0.30%
United States Treasury DBT $9.69M 0.30%
United States Treasury DBT $9.57M 0.29%
United States Treasury DBT $9.44M 0.29%
United States Treasury DBT $9.33M 0.28%
United States Treasury DBT $9.24M 0.28%
United States Treasury DBT $9.18M 0.28%
United States Treasury DBT $9.02M 0.27%
United States Treasury DBT $8.99M 0.27%
United States Treasury DBT $8.69M 0.26%
United States Treasury DBT $8.64M 0.26%
United States Treasury DBT $8.46M 0.26%
United States Treasury DBT $8.4M 0.26%
United States Treasury DBT $8.24M 0.25%
United States Treasury DBT $8.19M 0.25%
United States Treasury DBT $8.16M 0.25%
United States Treasury DBT $8.14M 0.25%
United States Treasury DBT $8.12M 0.25%
United States Treasury DBT $8.04M 0.24%
United States Treasury DBT $7.96M 0.24%

Showing top 60 of 9809 holdings.

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