BlackRock, Inc.
MX ˙ BMV
SecurityMX:BLK / BlackRock, Inc.
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership224,843 shares
Latest Disclosed Value $ 216,235,467
Rockefeller Capital Management L.P. reports 3.82% increase in ownership of BLK / BlackRock, Inc.

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 224,843 shares of BlackRock, Inc. (MX:BLK) valued at $216,235,467 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 216,566 shares of BlackRock, Inc.. This represents a change in shares of 3.82% 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)
2026-05-14 2026-03-31 13F BLACKROCK COM 09290D101 224,843 8,277 3.82 216,235 -6.71 0.1987
2026-03-16 2025-12-31 13F/A-1 BLACKROCK COM 09290D101 216,566 53,657 32.94 231,800 22.04 0.4174
2026-02-14 2025-12-31 13F BLACKROCK COM 09290D101 2,318,320 2,155,411 226,833 0.4084
2025-11-14 2025-09-30 13F BLACKROCK COM 09290D101 162,909 3,678 2.31 189,932 13.68 0.3715
2025-08-14 2025-06-30 13F/A-1 BLACKROCK COM 09290D101 159,231 9,077 6.05 167,074 17.56 0.3664
2025-08-08 2025-06-30 13F BLACKROCK COM 09290D101 159,231 9,077 167,074 0.2106
2025-05-14 2025-03-31 13F BLACKROCK COM 09290D101 150,154 -3,006 -1.96 142,119 -9.48 0.3508
2025-02-13 2024-12-31 13F BLACKROCK COM 09290D101 153,160 153,160 157,006 0.4066
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.