SPDR Series Trust - SPDR Portfolio S&P 500 ETF
US ˙ ARCA ˙ US78464A8541
QUESTO SIMBOLO NON E' PIU' ATTIVO

SecuritySPLG / SPDR Series Trust - SPDR Portfolio S&P 500 ETF
InstitutionBlackRock, Inc.
Latest Disclosed Ownership689,011 shares
Latest Disclosed Value $ 52,736,931
BlackRock, Inc. reports 49.88% increase in ownership of SPLG / SPDR Series Trust - SPDR Portfolio S&P 500 ETF

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 689,011 shares of SPDR Series Trust - SPDR Portfolio S&P 500 ETF (US:SPLG) valued at $52,736,931 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 459,713 shares of SPDR Series Trust - SPDR Portfolio S&P 500 ETF. This represents a change in shares of 49.88% during the quarter. The current value of the position is $55,120,880 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-13 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A854 689,011 229,298 49.88 52,737 43.00 0.0009
2026-02-12 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A854 459,713 328,802 251.16 36,878 259.61 0.0006
2025-11-12 2025-09-30 13F SPDR SERIES TRUST PORTFOLIO S&P500 78464A854 130,911 122,203 1,403.34 10,256 1,522.63 0.0002
2025-08-12 2025-06-30 13F SPDR SERIES TRUST PORTFOLIO S&P500 78464A854 8,708 2,163 33.05 633 46.98 0.0000
2025-05-02 2025-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 6,545 -5,062 -43.61 430 -46.25 0.0000
2025-02-07 2024-12-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 11,607 9,520 456.16 800 471.43 0.0000
2024-11-13 2024-09-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 2,087 -6,300 -75.12 141 -73.88 0.0000
2024-08-13 2024-06-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 8,387 -1,168 -12.22 537 -8.69 0.0000
2024-05-10 2024-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 9,555 5,615 142.51 588 166.82 0.0000
2024-02-13 2023-12-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 3,940 319 8.81 220 21.55 0.0000
2023-11-13 2023-09-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 3,621 719 24.78 182 19.87 0.0000
2023-08-11 2023-06-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 2,902 -263 -8.31 151 -0.66 0.0000
2023-05-12 2023-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 3,165 -2,288,648 -99.86 152 -99.85 0.0000
2023-02-13 2022-12-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 2,291,813 447,354 24.25 103,086 33.10 0.0032
2022-11-14 2022-09-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,844,459 -49,996 -2.64 77,449 -7.80 0.0026
2022-08-12 2022-06-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,894,455 200,295 11.82 84,001 -6.68 0.0027
2022-05-12 2022-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,694,160 197,709 13.21 90,011 7.74 0.0024
2022-02-10 2021-12-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,496,451 205,730 15.94 83,547 28.28 0.0021
2021-11-09 2021-09-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,290,721 266,782 26.05 65,130 26.38 0.0018
2021-08-11 2021-06-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 1,023,939 400,968 64.36 51,535 77.48 0.0014
2021-05-07 2021-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 622,971 392,800 170.66 29,037 186.98 0.0009
2021-02-05 2020-12-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 230,171 229,713 50,155.68 10,118 56,111.11 0.0003
2020-11-06 2020-09-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 458 39 9.31 18 20.00 0.0000
2020-08-14 2020-06-30 13F SPDR SER TR PORTFOLIO S&P500 78464A854 419 15 3.71 15 25.00 0.0000
2020-05-01 2020-03-31 13F SPDR SER TR PORTFOLIO S&P500 78464A854 404 20 5.21 12 -20.00 0.0000
2020-02-13 2019-12-31 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 384 0 0.00 15 15.38 0.0000
2019-11-08 2019-09-30 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 384 0 0.00 13 0.00 0.0000
2019-08-22 2019-06-30 13F/A-1 SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 384 120 45.45 13 44.44 0.0000
2019-08-13 2019-06-30 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 384 120 13
2019-05-09 2019-03-31 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 264 24 10.00 9 28.57 0.0000
2019-02-08 2018-12-31 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 240 0 0.00 7 -12.50 0.0000
2018-11-09 2018-09-30 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 240 0 0.00 8 0.00 0.0000
2018-08-09 2018-06-30 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 240 -100 -29.41 8 -27.27 0.0000
2018-05-09 2018-03-31 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 340 0 0.00 11 0.00 0.0000
2018-02-09 2017-12-31 13F SPDR SERIES TRUST PORTFOLIO LR ETF 78464A854 340 255 300.00 11 10.00 0.0000
2017-11-14 2017-09-30 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 10 0.00 0.0000
2017-08-10 2017-06-30 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 10 11.11 0.0000
2017-05-12 2017-03-31 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 9 0.00 0.0000
2017-02-10 2016-12-31 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 9 0.00 0.0000
2016-11-08 2016-09-30 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 9 12.50 0.0000
2016-08-10 2016-06-30 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 8 0.00 0.0000
2016-05-10 2016-03-31 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 0 0.00 8 0.00 0.0000
2016-02-11 2015-12-31 13F SPDR SERIES TRUST RUSSELL 1000 ETF 78464A854 85 85 8 0.0000
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.