블랙스톤 주식회사
MX ˙ BMV ˙ US09260D1072
SecurityMX:BX / Blackstone Inc.
InstitutionBeck Mack & Oliver Llc
Latest Disclosed Ownership2,259,068 shares
Latest Disclosed Value $ 259,770,259
Beck Mack & Oliver Llc reports 5.10% increase in ownership of BX / Blackstone Inc.

On May 12, 2026 - Beck Mack & Oliver Llc filed a 13F-HR form disclosing ownership of 2,259,068 shares of Blackstone Inc. (MX:BX) valued at $259,770,259 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,149,414 shares of Blackstone Inc.. This represents a change in shares of 5.10% during the quarter.

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)
2026-05-12 2026-03-31 13F BLACKSTONE COM 09260D107 2,259,068 109,654 5.10 259,770 -21.59 5.3568
2026-02-12 2025-12-31 13F BLACKSTONE COM 09260D107 2,149,414 -4,772 -0.22 331,311 -9.98 6.0171
2025-11-14 2025-09-30 13F BLACKSTONE COM 09260D107 2,154,186 -62,059 -2.80 368,043 11.02 6.6936
2025-08-14 2025-06-30 13F BLACKSTONE COM 09260D107 2,216,245 -42,394 -1.88 331,506 5.00 6.3281
2025-05-15 2025-03-31 13F BLACKSTONE COM 09260D107 2,258,639 -69,743 -3.00 315,713 -21.36 6.3062
2025-02-13 2024-12-31 13F BLACKSTONE COM 09260D107 2,328,382 -26,653 -1.13 401,460 11.32 7.4299
2024-11-13 2024-09-30 13F BLACKSTONE COM 09260D107 2,355,035 -3,093 -0.13 360,627 23.53 7.0145
2024-08-14 2024-06-30 13F BLACKSTONE COM 09260D107 2,358,128 -31,631 -1.32 291,936 -7.01 6.0475
2024-05-14 2024-03-31 13F BLACKSTONE COM 09260D107 2,389,759 35,913 1.53 313,943 1.87 6.3635
2024-02-14 2023-12-31 13F BLACKSTONE COM 09260D107 2,353,846 -12,571 -0.53 308,165 21.55 7.1677
2023-11-14 2023-09-30 13F BLACKSTONE COM 09260D107 2,366,417 -12,534 -0.53 253,538 14.63 6.6363
2023-08-08 2023-06-30 13F BLACKSTONE COM 09260D107 2,378,951 1,542 0.06 221,171 5.91 5.7792
2023-05-15 2023-03-31 13F BLACKSTONE COM 09260D107 2,377,409 11,746 0.50 208,832 18.99 6.0325
2023-02-14 2022-12-31 13F/A-1 BLACKSTONE COM 09260D107 2,365,663 21,034 0.90 175,509 -10.57 5.1522
2023-02-14 2022-12-31 13F BLACKSTONE COM 09260D107 2,365,663 21,034 175,509 4.9563
2022-11-10 2022-09-30 13F BLACKSTONE COM 09260D107 2,344,629 -3,831 -0.16 196,245 -8.40 6.3365
2022-08-12 2022-06-30 13F BLACKSTONE COM 09260D107 2,348,460 -26,008 -1.10 214,250 -28.92 6.4250
2022-05-16 2022-03-31 13F BLACKSTONE COM 09260D107 2,374,468 -39,391 -1.63 301,415 -3.49 7.5495
2022-01-28 2021-12-31 13F BLACKSTONE COM 09260D107 2,413,859 -129,764 -5.10 312,329 5.54 7.4363
2021-11-04 2021-09-30 13F BLACKSTONE COM 09260D107 2,543,623 -71,724 -2.74 295,925 16.48 7.6782
2021-07-28 2021-06-30 13F BLACKSTONE GROUP COM 09260D107 2,615,347 -120,349 -4.40 254,055 24.60 6.7594
2021-05-11 2021-03-31 13F BLACKSTONE GROUP COM 09260D107 2,735,696 -124,900 -4.37 203,891 9.98 6.2968
2021-02-10 2020-12-31 13F BLACKSTONE GROUP COM 09260D107 2,860,596 -77,116 -2.63 185,395 20.90 6.1548
2020-11-02 2020-09-30 13F BLACKSTONE GROUP COM 09260D107 2,937,712 -65,604 -2.18 153,349 -9.88 5.6335
2020-08-10 2020-06-30 13F BLACKSTONE GROUP COM 09260D107 3,003,316 -65,262 -2.13 170,168 21.69 6.3252
2020-05-05 2020-03-31 13F BLACKSTONE GROUP COM 09260D107 3,068,578 -106,823 -3.36 139,835 -21.28 6.2186
2020-02-07 2019-12-31 13F BLACKSTONE GROUP COM 09260D107 3,175,401 -26,231 -0.82 177,632 13.60 5.8692
2019-11-06 2019-09-30 13F BLACKSTONE GROUP COM 09260D107 3,201,632 -80,041 -2.44 156,368 7.27 5.5075
2019-08-13 2019-06-30 13F BLACKSTONE GROUP COM 09260D107 3,281,673 -73,833 -2.20 145,772 24.23 5.1224
2019-05-02 2019-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,355,506 -86,576 -2.52 117,342 14.36 4.1966
2019-02-04 2018-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,442,082 8,902 0.26 102,608 -21.51 4.1161
2018-10-29 2018-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,433,180 402 0.01 130,735 18.39 4.1519
2018-07-25 2018-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,432,778 36,924 1.09 110,432 1.78 3.7087
2018-04-25 2018-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,395,854 58,636 1.76 108,498 1.53 3.6520
2018-02-02 2017-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,337,218 -65,865 -1.94 106,858 -5.90 3.5049
2017-10-27 2017-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,403,083 1,993 0.06 113,561 0.12 3.7357
2017-07-26 2017-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,401,090 43,316 1.29 113,426 13.74 3.8187
2017-04-27 2017-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,357,774 54,122 1.64 99,726 11.68 3.4871
2017-01-31 2016-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,303,652 73,899 2.29 89,298 8.30 3.2116
2016-10-28 2016-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 3,229,753 230,452 7.68 82,456 12.03 2.9735
2016-07-29 2016-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,999,301 109,282 3.78 73,603 -9.20 2.5985
2016-04-27 2016-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,890,019 164,179 6.02 81,065 1.71 2.8304
2016-02-01 2015-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,725,840 29,108 1.08 79,704 -6.68 2.7167
2015-11-02 2015-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,696,732 191,759 7.66 85,405 -16.58 2.5842
2015-07-31 2015-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,504,973 -25,321 -1.00 102,378 4.04 2.6680
2015-04-28 2015-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,530,294 2,530,294 0.00 98,403 2.4631
2015-01-26 2014-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 0 -2,457,826 -100.00 0 -100.00
2014-10-29 2014-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,457,826 154,449 6.71 77,373 0.45 1.8184
2014-07-31 2014-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,303,377 85,519 3.86 77,025 4.45 1.7292
2014-04-30 2014-03-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,217,858 48,140 2.22 73,744 7.90 1.7232
2014-01-29 2013-12-31 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,169,718 104,128 5.04 68,347 32.94 1.6706
2013-10-28 2013-09-30 13F/A-1 BLACKSTONE GROUP L P COM UNIT COM 09253U108 2,065,590 242,245 13.29 51,412 33.89 1.3532
2013-10-28 2013-09-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 1,823,345 38,400
2013-07-24 2013-06-30 13F BLACKSTONE GROUP L P COM UNIT COM 09253U108 1,823,345 1,823,345 38,400 1.0479
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.