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US ˙ NYSE ˙ US09261X1028

SecurityBXSL / Blackstone Secured Lending Fund
InstitutionMorgan Stanley
Latest Disclosed Ownership5,997,970 shares
Latest Disclosed Value $ 142,091,909
Morgan Stanley reports 1.12% increase in ownership of BXSL / Blackstone Secured Lending Fund

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 5,997,970 shares of Blackstone Secured Lending Fund (US:BXSL) valued at $142,091,909 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 5,931,804 shares of Blackstone Secured Lending Fund. This represents a change in shares of 1.12% during the quarter. The current value of the position is $141,372,153 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 5,997,970 66,166 1.12 142,092 -9.02 0.0086
2026-05-27 2025-12-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 5,931,804 -1,248,969 -17.39 156,184 -16.57 0.0093
2026-02-13 2025-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 5,931,804 -1,248,969 156,184 0.0093
2026-05-27 2025-09-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 7,180,773 -627,990 -8.04 187,203 -22.04 0.0113
2025-11-14 2025-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 7,180,773 -627,990 187,203 0.0113
2025-08-15 2025-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 7,808,763 586,668 8.12 240,119 2.74 0.0156
2025-05-15 2025-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 7,222,095 639,302 9.71 233,707 9.88 0.0167
2025-05-15 2024-12-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,582,793 460,248 7.52 212,690 18.60 0.0149
2025-02-14 2024-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,582,793 460,248 212,690 0.0149
2025-05-14 2024-09-30 13F/A-2 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,122,545 -253,051 -3.97 179,329 -8.14 0.0130
2025-02-14 2024-09-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,122,545 -253,051 179,329 0.0130
2024-11-14 2024-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,122,545 -253,051 179,329 0.0015
2025-05-14 2024-06-30 13F/A-2 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,375,596 623,900 10.85 195,221 8.96 0.0151
2024-10-17 2024-06-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,375,596 623,900 195,221 0.0151
2024-08-14 2024-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 6,375,596 623,900 195,221 0.0151
2024-10-17 2024-03-31 13F/A-2 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 5,751,696 1,024,607 21.68 179,165 37.13 0.0144
2024-08-16 2024-03-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 5,751,696 1,024,607 179,165 0.0017
2024-05-15 2024-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 5,751,696 1,024,607 179,165 0.0144
2024-08-16 2023-12-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 4,727,089 1,232,997 35.29 130,657 36.67 0.0115
2024-02-13 2023-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 4,727,089 1,232,997 130,657 0.0115
2023-11-15 2023-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 3,494,092 550,914 18.72 95,598 18.72 0.0097
2023-08-14 2023-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 2,943,178 -38,625 -1.30 80,525 8.33 0.0079
2023-05-15 2023-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 2,981,803 473,119 18.86 74,336 32.58 0.0080
2023-02-14 2022-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 2,508,684 280,695 12.60 56,069 10.67 0.0064
2022-11-14 2022-09-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 2,227,989 1,028,029 85.67 50,665 78.61 0.0069
2022-10-27 2022-06-30 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 1,199,960 410,627 52.02 28,367 28.90 0.0037
2022-08-15 2022-06-30 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 1,199,960 410,627 28,367 0.0007
2022-10-27 2022-03-31 13F/A-1 BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 789,333 522,235 195.52 22,007 142.34 0.0030
2022-05-13 2022-03-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 789,333 522,235 22,007 0.0030
2022-02-14 2021-12-31 13F BLACKSTONE SECD LENDING FD COMMON STOCK 09261X102 267,098 267,098 9,081 0.0011
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.