Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionRosenberg Matthew Hamilton
Latest Disclosed Ownership1,349 shares
Latest Disclosed Value $ 771,803
Rosenberg Matthew Hamilton reports 1.20% increase in ownership of META / Meta Platforms, Inc.

On April 6, 2026 - Rosenberg Matthew Hamilton filed a 13F-HR form disclosing ownership of 1,349 shares of Meta Platforms, Inc. (MX:META) valued at $771,803 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 1,333 shares of Meta Platforms, Inc.. This represents a change in shares of 1.20% 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)
2026-04-06 2026-03-31 13F META PLATFORMS INC CL A Stock 30303M102 1,349 16 1.20 772 -12.29 0.1581
2026-01-05 2025-12-31 13F META PLATFORMS INC CL A Stock 30303M102 1,333 104 8.46 880 -2.55 0.1822
2025-11-10 2025-09-30 13F META PLATFORMS INC CL A Stock 30303M102 1,229 6 0.49 903 0.00 0.1951
2025-07-28 2025-06-30 13F META PLATFORMS INC CL A Stock 30303M102 1,223 132 12.10 903 43.63 0.2099
2025-04-28 2025-03-31 13F META PLATFORMS INC CL A Stock 30303M102 1,091 -42 -3.71 629 -5.28 0.1577
2025-01-14 2024-12-31 13F META PLATFORMS INC CL A Stock 30303M102 1,133 -24 -2.07 663 0.15 0.1724
2024-10-28 2024-09-30 13F META PLATFORMS INC CL A Stock 30303M102 1,157 0 0.00 662 13.55 0.1733
2024-07-26 2024-06-30 13F META PLATFORMS INC CL A Stock 30303M102 1,157 0 0.00 584 2.64 0.1725
2024-04-22 2024-03-31 13F META PLATFORMS INC CL A Stock 30303M102 1,157 -31 -2.61 568 35.24 0.1643
2024-01-16 2023-12-31 13F META PLATFORMS INC CL A Stock 30303M102 1,188 5 0.42 421 18.31 0.1293
2023-10-11 2023-09-30 13F META PLATFORMS INC CL A Stock 30303M102 1,183 0 0.00 355 4.72 0.1183
2023-07-26 2023-06-30 13F META PLATFORMS INC CL A Stock 30303M102 1,183 -330 -21.81 339 5.94 0.1148
2023-04-17 2023-03-31 13F META PLATFORMS INC CL A Stock 30303M102 1,513 1 0.07 321 76.80 0.1035
2023-01-19 2022-12-31 13F META PLATFORMS INC CL A Stock 30303M102 1,512 36 2.44 182 -9.50 0.0616
2022-10-21 2022-09-30 13F META PLATFORMS INC CL A Stock 30303M102 1,476 -87 -5.57 200 -20.00 0.0773
2022-07-15 2022-06-30 13F META PLATFORMS INC CL A Stock 30303M102 1,563 -173 -9.97 250 -35.23 0.0943
2022-04-14 2022-03-31 13F META PLATFORMS INC CL A Stock 30303M102 1,736 645 59.12 386 5.18 0.1350
2022-01-20 2021-12-31 13F META PLATFORMS CL A 30303M102 1,091 -36 -3.19 367 -3.93 0.1306
2021-10-12 2021-09-30 13F FACEBOOK CL A 30303M102 1,127 124 12.36 382 9.46 0.1509
2021-07-26 2021-06-30 13F FACEBOOK CL A 30303M102 1,003 0 0.00 349 18.31 0.1816
2021-04-30 2021-03-31 13F FACEBOOK CL A 30303M102 1,003 0 0.00 295 7.66 0.1683
2021-02-03 2020-12-31 13F FACEBOOK CL A 30303M102 1,003 0 0.00 274 4.18 0.1710
2020-10-16 2020-09-30 13F FACEBOOK CL A 30303M102 1,003 0 0.00 263 15.35 0.1932
2020-08-04 2020-06-30 13F FACEBOOK CL A 30303M102 1,003 545 119.00 228 196.10 0.1816
2020-05-14 2020-03-31 13F FACEBOOK CL A 30303M102 458 458 77 0.0766
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.