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
InstitutionMarathon Capital Management
Latest Disclosed Ownership195,446 shares
Latest Disclosed Value $ 17,910,712
Marathon Capital Management reports 21.08% increase in ownership of BIL / SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF

On May 14, 2026 - Marathon Capital Management filed a 13F-HR form disclosing ownership of 195,446 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF (US:BIL) valued at $17,910,671 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 161,415 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF. This represents a change in shares of 21.08% during the quarter. The current value of the position is $17,873,537 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)
2026-05-14 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78468R663 195,446 34,031 21.08 17,911 21.42 4.0227
2026-01-29 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78468R663 161,415 38,842 31.69 14,750 31.16 3.1742
2025-11-14 2025-09-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 122,573 84,528 222.18 11,246 222.33 2.5735
2025-08-14 2025-06-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 38,045 15,245 66.86 3,490 66.86 0.8888
2025-05-15 2025-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 22,800 15,370 206.86 2,091 207.95 0.5570
2025-02-14 2024-12-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 7,430 2,030 37.59 679 37.17 0.1697
2024-11-14 2024-09-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 5,400 2,065 61.92 496 61.76 0.1202
2024-08-14 2024-06-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 3,335 3,335 306 0.0780
2023-05-12 2023-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 0 -2,541 -100.00 0 -100.00
2023-02-14 2022-12-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 2,541 0 0.00 233 -0.43 0.0641
2022-11-14 2022-09-30 13F Spdr Bloomberg Barclays BLOOMBERG 1-3 MO 78468R663 2,541 2,541 233 0.0666
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.