SPDR Series Trust - State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF
US ˙ ARCA ˙ US78464A8053

SecuritySPTM / SPDR Series Trust - State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership49,490 shares
Latest Disclosed Value $ 3,912,722
Advisor OS, LLC reports 5.00% decrease in ownership of SPTM / SPDR Series Trust - State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 49,490 shares of SPDR Series Trust - State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (US:SPTM) valued at $3,912,679 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 52,097 shares of SPDR Series Trust - State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF. This represents a change in shares of -5.00% during the quarter. The current value of the position is $4,425,396 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)
2026-05-07 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A805 49,490 -2,607 -5.00 3,913 -8.98 0.1100
2026-02-04 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A805 52,097 2,124 4.25 4,298 6.65 0.1269
2025-11-12 2025-09-30 13F SPDR SERIES TRUST PORTFOLI S&P1500 78464A805 49,973 3,579 7.71 4,030 16.00 0.3478
2025-08-14 2025-06-30 13F SPDR SERIES TRUST PORTFOLI S&P1500 78464A805 46,394 1,521 3.39 3,474 13.86 0.3419
2025-05-06 2025-03-31 13F SPDR SER TR PORTFOLI S&P1500 78464A805 44,873 -995 -2.17 3,052 -6.87 0.3473
2025-02-05 2024-12-31 13F SPDR SER TR PORTFOLI S&P1500 78464A805 45,868 1,769 4.01 3,276 6.05 0.3794
2024-11-04 2024-09-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 44,099 93 0.21 3,090 5.82 0.3076
2024-08-05 2024-06-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 44,006 -847 -1.89 2,920 1.46 0.3198
2024-05-09 2024-03-31 13F SPDR SER TR PORTFOLI S&P1500 78464A805 44,853 187 0.42 2,877 10.23 0.3306
2024-02-08 2023-12-31 13F SPDR SER TR PORTFOLI S&P1500 78464A805 44,666 4,176 10.31 2,611 22.82 0.3398
2023-11-03 2023-09-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 40,490 5,383 15.33 2,125 11.20 0.3185
2023-08-08 2023-06-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 35,107 25,872 280.15 1,911 310.97 0.3127
2023-04-25 2023-03-31 13F SPDR SER TR PORTFOLI S&P1500 78464A805 9,235 9,235 466 0.1118
2020-11-12 2020-09-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 0 -9,574 -100.00 0 -100.00
2020-08-28 2020-06-30 13F SPDR SER TR PORTFOLI S&P1500 78464A805 9,574 9,574 362 0.2158
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.