SPDR Series Trust - State Street SPDR Portfolio Corporate Bond ETF
US ˙ ARCA ˙ US78464A1447

SecuritySPBO / SPDR Series Trust - State Street SPDR Portfolio Corporate Bond ETF
InstitutionAssetmark, Inc
Latest Disclosed Ownership2,170,235 shares
Latest Disclosed Value $ 63,001,931
Assetmark, Inc reports 47.04% increase in ownership of SPBO / SPDR Series Trust - State Street SPDR Portfolio Corporate Bond ETF

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 2,170,235 shares of SPDR Series Trust - State Street SPDR Portfolio Corporate Bond ETF (US:SPBO) valued at $63,001,922 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,475,908 shares of SPDR Series Trust - State Street SPDR Portfolio Corporate Bond ETF. This represents a change in shares of 47.04% during the quarter. The current value of the position is $62,784,899 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)
2026-05-06 2026-03-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A144 2,170,235 694,327 47.04 63,002 45.49 0.1285
2026-01-23 2025-12-31 13F SPDR SERIES TRUST STATE STREET SPD 78464A144 1,475,908 72,388 5.16 43,303 4.13 0.0883
2025-11-06 2025-09-30 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,403,520 68,497 5.13 41,586 6.61 0.0891
2025-08-04 2025-06-30 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,335,023 18,100 1.37 39,009 2.04 0.0921
2025-05-06 2025-03-31 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,316,923 32,266 2.51 38,230 3.91 0.1050
2025-02-06 2024-12-31 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,284,657 213,836 19.97 36,793 14.42 0.0999
2024-11-01 2024-09-30 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,070,821 -2,077 -0.19 32,157 4.43 0.0921
2024-08-13 2024-06-30 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,072,898 24,737 2.36 30,792 0.92 0.0952
2024-05-07 2024-03-31 13F SPDR SER TR PORTFOLIO CRPORT 78464A144 1,048,161 1,048,161 30,512 0.0992
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.