Blackstone Inc.
US ˙ NYSE ˙ US09260D1072

SecurityBX / Blackstone Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership310,628 shares
Latest Disclosed Value $ 35,719,114
Asset Management One Co., Ltd. reports 9.53% decrease in ownership of BX / Blackstone Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 310,628 shares of Blackstone Inc. (US:BX) valued at $35,719,114 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 343,362 shares of Blackstone Inc.. This represents a change in shares of -9.53% during the quarter. The current value of the position is $36,824,949 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)
2026-05-08 2026-03-31 13F BLACKSTONE COM 09260D107 310,628 -32,734 -9.53 35,719 -32.93 0.1053
2026-01-27 2025-12-31 13F BLACKSTONE COM 09260D107 343,362 3,583 1.05 53,260 -8.25 0.1481
2025-10-22 2025-09-30 13F BLACKSTONE COM 09260D107 339,779 18,594 5.79 58,051 20.83 0.1682
2025-07-31 2025-06-30 13F BLACKSTONE COM 09260D107 321,185 -10,075 -3.04 48,043 3.76 0.1506
2025-04-23 2025-03-31 13F BLACKSTONE COM 09260D107 331,260 18,440 5.89 46,304 -14.94 0.1601
2025-01-30 2024-12-31 13F BLACKSTONE COM 09260D107 312,820 5,036 1.64 54,434 15.50 0.1870
2024-10-30 2024-09-30 13F BLACKSTONE COM 09260D107 307,784 20,467 7.12 47,131 32.50 0.1677
2024-07-18 2024-06-30 13F BLACKSTONE COM 09260D107 287,317 -3,988 -1.37 35,570 -7.05 0.1361
2024-05-02 2024-03-31 13F BLACKSTONE COM 09260D107 291,305 -11,764 -3.88 38,269 -5.15 0.1475
2024-01-24 2023-12-31 13F BLACKSTONE COM 09260D107 303,069 15,875 5.53 40,348 31.13 0.1624
2023-10-19 2023-09-30 13F BLACKSTONE COM 09260D107 287,194 6,016 2.14 30,770 17.70 0.1370
2023-07-31 2023-06-30 13F BLACKSTONE COM 09260D107 281,178 -12,080 -4.12 26,141 1.48 0.1106
2023-04-25 2023-03-31 13F BLACKSTONE COM 09260D107 293,258 15,049 5.41 25,760 23.90 0.1168
2023-02-06 2022-12-31 13F BLACKSTONE COM 09260D107 278,209 -16,124 -5.48 20,791 -15.61 0.1013
2022-11-04 2022-09-30 13F BLACKSTONE COM 09260D107 294,333 -3,196 -1.07 24,635 -9.24 0.1253
2022-07-29 2022-06-30 13F BLACKSTONE COM 09260D107 297,529 3,638 1.24 27,143 -27.24 0.1275
2022-05-13 2022-03-31 13F BLACKSTONE COM 09260D107 293,891 -6,879 -2.29 37,306 -3.50 0.1456
2022-02-09 2021-12-31 13F BLACKSTONE COM 09260D107 300,770 554 0.18 38,661 10.68 0.1347
2021-11-02 2021-09-30 13F BLACKSTONE COM 09260D107 300,216 -7,587 -2.46 34,930 16.83 0.1339
2021-08-03 2021-06-30 13F BLACKSTONE GROUP COM 09260D107 307,803 -6,753 -2.15 29,899 27.54 0.1113
2021-05-14 2021-03-31 13F BLACKSTONE GROUP COM 09260D107 314,556 -3,193 -1.00 23,443 14.30 0.0931
2021-02-12 2020-12-31 13F BLACKSTONE GROUP COM CL A 09260D107 317,749 -4,005 -1.24 20,510 22.12 0.0845
2020-11-13 2020-09-30 13F BLACKSTONE GROUP COM CL A 09260D107 321,754 -17,148 -5.06 16,795 -12.54 0.0772
2020-08-14 2020-06-30 13F BLACKSTONE GROUP COM CL A 09260D107 338,902 8,811 2.67 19,203 27.66 0.0944
2020-05-14 2020-03-31 13F BLACKSTONE GROUP COM CL A 09260D107 330,091 5,020 1.54 15,042 -17.28 0.0878
2020-02-14 2019-12-31 13F BLACKSTONE GROUP COM CL A 09260D107 325,071 325,071 18,184 0.0820
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.