SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF
US ˙ ARCA ˙ US78468R6633

SecurityBIL / SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF
InstitutionHeadinvest, Llc
Latest Disclosed Ownership41,916 shares
Latest Disclosed Value $ 3,841,182
Headinvest, Llc reports 2.28% increase in ownership of BIL / SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF

On May 15, 2026 - Headinvest, Llc filed a 13F-HR form disclosing ownership of 41,916 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF (US:BIL) valued at $3,841,182 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 40,981 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF. This represents a change in shares of 2.28% during the quarter. The current value of the position is $3,831,542 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78468R663 41,916 935 2.28 3,841 2.59 0.7879
2026-02-02 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78468R663 40,981 1,610 4.09 3,745 3.65 0.7447
2025-11-14 2025-09-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 39,371 5,109 14.91 3,612 14.96 0.7468
2025-08-14 2025-06-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 34,262 4,476 15.03 3,143 15.01 0.6695
2025-05-15 2025-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 29,786 3,116 11.68 2,732 12.06 0.5312
2025-02-18 2024-12-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 26,670 10,390 63.82 2,438 63.19 0.4602
2024-11-15 2024-09-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 16,280 568 3.62 1,495 3.61 0.2766
2024-08-14 2024-06-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 15,712 3,524 28.91 1,442 28.98 0.2840
2024-08-14 2024-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 12,188 -912 -6.96 1,119 -6.60 0.2184
2024-02-12 2023-12-31 13F SPDR BLOOMBERG 1-3 MONTH T-BILL ETF ETF 78468R663 13,100 -4,533 -25.71 1,197 -25.74 0.2490
2023-12-11 2023-09-30 13F SPDR BLOOMBERG 1-3 MONTH T-BILL ETF ETF 78468R663 17,633 281 1.62 1,612 1.45 0.3502
2023-08-23 2023-06-30 13F SPDR BLOOMBERG 1-3 MONTH T-BILL ETF ETF 78468R663 17,352 10,937 170.49 1,589 169.78 0.3425
2023-05-17 2023-03-31 13F SPDR BLOOMBERG 1-3 MONTH T-BILL ETF ETF 78468R663 6,415 4,200 189.62 589 190.15 0.1292
2021-02-16 2020-12-31 13F/A-1 SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 2,215 -1,535 -40.93 203 -40.82 0.0431
2020-05-11 2020-03-31 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 3,750 3,750 343 0.0961
2019-11-21 2019-09-30 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 0 -3,750 -100.00 0 -100.00
2019-08-22 2019-06-30 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 3,750 0 0.00 344 0.29 0.0973
2019-05-15 2019-03-31 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 3,750 -3,850 -50.66 343 -50.65 0.0961
2019-02-22 2018-12-31 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 7,600 3,800 100.00 695 99.71 0.1101
2018-11-14 2018-09-30 13F SPDR Bloomberg Barclays 1-3 Mo COM 78468R663 3,800 3,800 348 0.1001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.