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
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership846,918 shares
Latest Disclosed Value $ 77,611,572
Mercer Global Advisors Inc /adv reports 14.70% increase in ownership of BIL / SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 846,918 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF (US:BIL) valued at $77,611,566 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 738,347 shares of SPDR Series Trust - State Street SPDR Bloomberg 1-3 Month T-Bill ETF. This represents a change in shares of 14.70% during the quarter. The current value of the position is $77,450,651 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 846,918 108,571 14.70 77,612 15.03 0.1148
2026-02-17 2025-12-31 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 738,347 104,849 16.55 67,470 16.08 0.1028
2025-11-14 2025-09-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 633,498 343,713 118.61 58,123 118.66 0.0970
2025-08-14 2025-06-30 13F SPDR SERIES TRUST BLOOMBERG 1-3 MO 78468R663 289,785 -2,936 -1.00 26,582 -1.01 0.0541
2025-05-15 2025-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 292,721 -11,111 -3.66 26,851 -3.34 0.0616
2025-02-14 2024-12-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 303,832 -8,047,517 -96.36 27,779 -96.36 0.0678
2024-11-14 2024-09-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 8,351,349 7,641,109 1,075.85 763,834 2,083.26 1.7876
2024-08-12 2024-06-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 710,240 -101 -0.01 34,987 53,724.62 0.0954
2024-05-15 2024-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 710,341 49,719 7.53 65 8.33 0.1853
2024-02-15 2023-12-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 660,622 26,275 4.14 60 3.45 0.1816
2023-11-15 2023-09-30 13F/A-1 SPDR SER TR BLOOMBERG 1-3 MO 78468R663 634,347 -278,660 -30.52 58 -30.12 0.2212
2023-11-14 2023-09-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 634,347 -278,660 58 0.2211
2023-08-14 2023-06-30 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 913,007 -2,705,253 -74.77 84 -74.92 0.3327
2023-05-16 2023-03-31 13F SPDR SER TR BLOOMBERG 1-3 MO 78468R663 3,618,260 733,442 25.42 331 25.86 1.5042
2023-02-09 2022-12-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 2,884,818 909,313 46.03 264 -99.85 1.3215
2022-11-15 2022-09-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 1,975,505 492,259 33.19 180,956 33.35 1.0739
2022-08-10 2022-06-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 1,483,246 1,466,461 8,736.74 135,702 8,740.52 0.8306
2022-05-10 2022-03-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 16,785 -9,296 -35.64 1,535 -35.64 0.0090
2022-02-04 2021-12-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 26,081 130 0.50 2,385 0.46 0.0147
2021-11-10 2021-09-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 25,951 358 1.40 2,374 1.41 0.0166
2021-08-10 2021-06-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 25,593 593 2.37 2,341 2.32 0.0180
2021-08-10 2021-03-31 13F/A-1 SPDR SER TR SPDR BLOOMBERG 78468R663 25,000 22,375 852.38 2,288 853.33 0.0208
2021-05-11 2021-03-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 25,000 22,375 2,288 0.0219
2021-02-12 2020-12-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 2,625 -14,394 -84.58 240 -84.60 0.0030
2020-12-10 2020-09-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 17,019 -33,099 -66.04 1,558 -66.03 0.0234
2020-08-10 2020-06-30 13F SPDR SER TR SPDR BLOOMBERG 78468R663 50,118 22,998 84.80 4,587 84.59 0.0833
2020-05-18 2020-03-31 13F SPDR SER TR SPDR BLOOMBERG 78468R663 27,120 -33,340 -55.14 2,485 -55.05 0.0547
2020-02-13 2019-12-31 13F SPDR SERIES TRUST SPDR BLOOMBERG COM 78468R663 60,460 -20,303 -25.14 5,528 -25.27 0.1104
2019-11-12 2019-09-30 13F SPDR SERIES TRUST SPDR BLOOMBERG COM 78468R663 80,763 6,323 8.49 7,397 8.48 0.1740
2019-08-14 2019-06-30 13F SPDR SER TR SPDR BLOOMBERG COM 78468R663 74,440 66,919 889.76 6,819 889.70 0.1807
2019-04-23 2019-03-31 13F/A-1 SPDR SER TR SPDR BLOOMBERG COM 78468R663 7,521 7,521 689 0.0248
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.