Blackstone Inc.
US ˙ NYSE ˙ US09260D1072

SecurityBX / Blackstone Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership432,931 shares
Latest Disclosed Value $ 66,732,054
Sei Investments Co reports 2.60% decrease in ownership of BX / Blackstone Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 432,931 shares of Blackstone Inc. (US:BX) valued at $66,731,984 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 444,468 shares of Blackstone Inc.. This represents a change in shares of -2.60% during the quarter. The current value of the position is $51,323,970 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)
2026-02-13 2025-12-31 13F BLACKSTONE COM 09260D107 432,931 -11,537 -2.60 66,732 -12.12 0.0659
2025-11-13 2025-09-30 13F BLACKSTONE COM 09260D107 444,468 -8,151 -1.80 75,937 12.16 0.0817
2025-08-14 2025-06-30 13F BLACKSTONE COM 09260D107 452,619 -53,469 -10.57 67,703 -4.30 0.0785
2025-05-14 2025-03-31 13F/A-1 BLACKSTONE COM 09260D107 506,088 64,211 14.53 70,742 -7.15 0.0910
2025-05-13 2025-03-31 13F BLACKSTONE COM 09260D107 443,964 2,087 75,716 0.0823
2025-02-11 2024-12-31 13F BLACKSTONE COM 09260D107 441,877 35,500 8.74 76,188 22.43 0.0978
2024-11-12 2024-09-30 13F BLACKSTONE COM 09260D107 406,377 -142,250 -25.93 62,229 -8.38 0.0808
2024-08-13 2024-06-30 13F BLACKSTONE COM 09260D107 548,627 -1,780 -0.32 67,921 -6.07 0.0962
2024-05-07 2024-03-31 13F BLACKSTONE COM 09260D107 550,407 -12,823 -2.28 72,308 -1.94 0.1059
2024-02-14 2023-12-31 13F BLACKSTONE COM 09260D107 563,230 12,690 2.31 73,738 25.01 0.1184
2023-11-14 2023-09-30 13F BLACKSTONE COM 09260D107 550,540 -30,057 -5.18 58,985 9.28 0.1060
2023-08-11 2023-06-30 13F BLACKSTONE COM 09260D107 580,597 12,180 2.14 53,978 8.11 0.0942
2023-05-12 2023-03-31 13F BLACKSTONE COM 09260D107 568,417 -1,502 -0.26 49,929 18.09 0.0927
2023-02-10 2022-12-31 13F BLACKSTONE COM 09260D107 569,919 -147,583 -20.57 42,283 -29.60 0.0940
2022-11-14 2022-09-30 13F BLACKSTONE COM 09260D107 717,502 -47,875 -6.26 60,056 -13.98 0.1340
2022-08-15 2022-06-30 13F BLACKSTONE COM 09260D107 765,377 -60,500 -7.33 69,820 -33.41 0.1508
2022-05-13 2022-03-31 13F BLACKSTONE COM 09260D107 825,877 504,675 157.12 104,848 152.23 0.2107
2022-02-14 2021-12-31 13F BLACKSTONE COM 09260D107 321,202 261,048 433.97 41,568 490.87 0.0780
2021-11-12 2021-09-30 13F BLACKSTONE COM 09260D107 60,154 -26,786 -30.81 7,035 -16.49 0.0148
2021-08-06 2021-06-30 13F BLACKSTONE GROUP COM 09260D107 86,940 -3,387 -3.75 8,424 31.42 0.0187
2021-05-12 2021-03-31 13F BLACKSTONE GROUP COM 09260D107 90,327 1,537 1.73 6,410 11.77 0.0162
2021-02-08 2020-12-31 13F BLACKSTONE GROUP COM CL A 09260D107 88,790 -10,258 -10.36 5,735 10.91 0.0148
2020-12-04 2020-09-30 13F/A-1 BLACKSTONE GROUP COM CL A 09260D107 99,048 23,470 31.05 5,171 20.73 0.0150
2020-11-06 2020-09-30 13F BLACKSTONE GROUP COM CL A 09260D107 99,048 23,470 5,171 12,450.6183
2020-08-17 2020-06-30 13F/A-1 BLACKSTONE GROUP COM CL A 09260D107 75,578 18,718 32.92 4,283 62.05 0.0133
2020-08-11 2020-06-30 13F BLACKSTONE GROUP COM CL A 09260D107 45,567 -11,293 2,567 6,963.1241
2020-05-14 2020-03-31 13F BLACKSTONE GROUP COM CL A 09260D107 56,860 35,174 162.20 2,643 117.89 0.0097
2020-02-06 2019-12-31 13F BLACKSTONE GROUP COM CL A 09260D107 21,686 -4,460 -17.06 1,213 -4.79 0.0036
2019-11-12 2019-09-30 13F BLACKSTONE GROUP COM CL A 09260D107 26,146 -1,725 -6.19 1,274 2.91 0.0033
2019-08-14 2019-06-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 27,871 3,527 14.49 1,238 45.48 0.0040
2019-05-15 2019-03-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 24,344 -52,860 -68.47 851 -71.05 0.0029
2019-02-13 2018-12-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 77,204 0 0.00 2,940 0.00 0.0105
2018-11-08 2018-09-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 77,204 -6,323 -7.57 2,940 9.42 0.0107
2018-08-03 2018-06-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 83,527 -319,771 -79.29 2,687 -79.15 0.0091
2018-05-11 2018-03-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 403,298 -88,686 -18.03 12,885 -18.21 0.0494
2018-02-08 2017-12-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 491,984 -73,547 -13.00 15,754 -16.52 0.0547
2017-11-06 2017-09-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 565,531 61,804 12.27 18,871 12.33 0.0671
2017-07-31 2017-06-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 503,727 111,831 28.54 16,800 44.34 0.0670
2017-05-05 2017-03-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 391,896 154,294 64.94 11,639 81.21 0.0510
2017-02-02 2016-12-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 237,602 202,217 571.48 6,423 610.51 0.0311
2016-11-04 2016-09-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 35,385 26,089 280.65 904 296.49 0.0046
2016-08-11 2016-06-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 9,296 158 1.73 228 -10.94 0.0014
2016-05-10 2016-03-31 13F/A-1 BLACKSTONE GROUP L P COM UNIT LTD 09253U108 9,138 -265 -2.82 256 -6.91 0.0016
2016-02-03 2015-12-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 9,403 -16,895 -64.24 275 -66.99 0.0017
2015-11-02 2015-09-30 13F/A-1 BLACKSTONE GROUP L P COM UNIT LTD 09253U108 26,298 -60,013 -69.53 833 -76.39 0.0076
2015-10-30 2015-09-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 26,298 833
2015-08-07 2015-06-30 13F/A-1 BLACKSTONE GROUP L P COM UNIT LTD 09253U108 86,311 -31,296 -26.61 3,528 -22.87 0.0319
2015-08-04 2015-06-30 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 86,311 -31,296 3,528 0.0319
2015-05-14 2015-03-31 13F/A-1 BLACKSTONE GROUP L P COM UNIT LTD 09253U108 117,607 70,340 148.81 4,574 186.05 0.0397
2015-05-01 2015-03-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 117,607 4,574
2015-02-10 2014-12-31 13F BLACKSTONE GROUP L P COM UNIT LTD 09253U108 47,267 47,267 1,599 0.0141
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.