SPDR Series Trust - State Street SPDR Portfolio Mortgage Backed Bond ETF
US ˙ ARCA

SecuritySPMB / SPDR Series Trust - State Street SPDR Portfolio Mortgage Backed Bond ETF
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership137,196 shares
Latest Disclosed Value $ 3,071,702
Advisor Group Holdings, Inc. reports 0.88% decrease in ownership of SPMB / SPDR Series Trust - State Street SPDR Portfolio Mortgage Backed Bond ETF

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 137,196 shares of SPDR Series Trust - State Street SPDR Portfolio Mortgage Backed Bond ETF (US:SPMB) valued at $3,071,818 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 138,412 shares of SPDR Series Trust - State Street SPDR Portfolio Mortgage Backed Bond ETF. This represents a change in shares of -0.88% during the quarter. The current value of the position is $3,033,404 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 78464A383 137,196 -1,216 -0.88 3,072 -1.03 0.0026
2026-02-17 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A383 138,412 -122,008 -46.85 3,103 -46.65 0.0045
2025-11-14 2025-09-30 13F SPDR SERIES TRUST PORT MTG BK ETF 78464A383 260,420 34,706 15.38 5,816 16.72 0.0081
2025-09-04 2025-06-30 13F/A-1 SPDR SERIES TRUST PORT MTG BK ETF 78464A383 225,714 101,830 82.20 4,984 82.46 0.0089
2025-08-13 2025-06-30 13F SPDR SERIES TRUST PORT MTG BK ETF 78464A383 668,333 544,449 14,448 0.0167
2025-05-12 2025-03-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 123,884 -477,784 -79.41 2,732 -78.94 0.0061
2025-06-06 2024-12-31 13F/A-1 SPDR SER TR PORT MTG BK ETF 78464A383 601,668 70,009 13.17 12,966 8.24 0.0291
2025-02-07 2024-12-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 527,279 -4,380 11,856 0.0302
2024-11-13 2024-09-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 531,659 -49,182 -8.47 11,978 -4.39 0.0270
2024-08-13 2024-06-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 580,841 -3,908 -0.67 12,528 -1.35 0.0296
2024-05-10 2024-03-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 584,749 565,209 2,892.57 12,700 2,846.64 0.0284
2024-02-12 2023-12-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 19,540 5,249 36.73 431 45.12 0.0008
2023-11-13 2023-09-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 14,291 -3,615 -20.19 297 -24.23 0.0004
2023-08-21 2023-06-30 13F/A-1 SPDR SER TR PORT MTG BK ETF 78464A383 17,906 202 1.14 392 0.00 0.0007
2023-08-10 2023-06-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 17,906 202 392 0.0001
2023-05-12 2023-03-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 17,704 -394 -2.18 393 0.00 0.0007
2023-02-10 2022-12-31 13F SPDR SER TR PORT MTG BK ETF 78464A383 18,098 1,878 11.58 393 12.64 0.0008
2022-11-14 2022-09-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 16,220 -4,708 -22.50 348 -27.20 0.0008
2022-08-10 2022-06-30 13F SPDR SER TR PORT MTG BK ETF 78464A383 20,928 -17,674 -45.79 478 -57.59 0.0011
2022-05-04 2022-03-31 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 38,602 -5,234 -11.94 1,127 1.35 0.0022
2022-02-03 2021-12-31 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 43,836 -19,264 -30.53 1,112 -31.48 0.0021
2021-11-05 2021-09-30 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 63,100 -17,504 -21.72 1,623 -22.16 0.0034
2021-08-02 2021-06-30 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 80,604 -26,509 -24.75 2,085 -24.95 0.0045
2021-05-13 2021-03-31 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 107,113 23,004 27.35 2,778 24.69 0.0067
2021-02-10 2020-12-31 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 84,109 -31,290 -27.11 2,228 -27.54 0.0059
2020-11-12 2020-09-30 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 115,399 -5,181 -4.30 3,075 -4.80 0.0092
2020-08-14 2020-06-30 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 120,580 2,481 2.10 3,230 2.51 0.0108
2020-05-18 2020-03-31 13F SPDR SER TR PORTFLI MORTGAGE 78464A383 118,099 118,099 3,151 0.0129
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.