Blackstone Secured Lending Fund
US ˙ NYSE ˙ US09261X1028

SecurityBXSL / Blackstone Secured Lending Fund
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership264,299 shares
Latest Disclosed Value $ 6,262,131
Advisor Group Holdings, Inc. reports 0.21% decrease in ownership of BXSL / Blackstone Secured Lending Fund

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 264,299 shares of Blackstone Secured Lending Fund (US:BXSL) valued at $6,261,243 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 264,866 shares of Blackstone Secured Lending Fund. This represents a change in shares of -0.21% during the quarter. The current value of the position is $6,229,527 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 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 264,299 -567 -0.21 6,262 -10.22 0.0053
2026-02-17 2025-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 264,866 -153,756 -36.73 6,976 -42.58 0.0102
2025-11-14 2025-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 418,622 -29,867 -6.66 12,148 -11.93 0.0170
2025-09-04 2025-06-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 448,489 6,606 1.49 13,793 -3.55 0.0246
2025-08-13 2025-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 408,800 -33,083 13,181 0.0152
2025-05-12 2025-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 441,883 50,717 12.97 14,301 13.15 0.0319
2025-06-06 2024-12-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 391,166 14,262 3.78 12,640 14.47 0.0284
2025-02-07 2024-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 346,959 -29,945 10,166 0.0259
2024-11-13 2024-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 376,904 137,552 57.47 11,041 50.63 0.0249
2024-08-13 2024-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 239,352 -20,910 -8.03 7,330 -9.61 0.0173
2024-05-10 2024-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 260,262 -150,549 -36.65 8,109 -28.59 0.0181
2024-02-12 2023-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 410,811 17,295 4.39 11,355 5.47 0.0199
2023-11-13 2023-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 393,516 341,157 651.57 10,767 651.82 0.0159
2023-08-21 2023-06-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 52,359 22,378 74.64 1,433 91.70 0.0026
2023-08-10 2023-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 52,359 22,378 1,433 0.0004
2023-05-12 2023-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 29,981 1,351 4.72 747 16.90 0.0014
2023-02-10 2022-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 28,630 5,454 23.53 640 21.25 0.0013
2022-11-14 2022-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 23,176 17,130 283.33 527 268.53 0.0012
2022-08-10 2022-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,046 3,875 178.49 143 134.43 0.0003
2022-05-04 2022-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 2,171 1,125 107.55 61 69.44 0.0001
2022-02-03 2021-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 1,046 1,046 36 0.0001
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.