Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionPrimecap Management Co/ca/
Latest Disclosed Ownership774,240 shares
Latest Disclosed Value $ 442,965,932
Primecap Management Co/ca/ reports 1.84% decrease in ownership of META / Meta Platforms, Inc.

On May 11, 2026 - Primecap Management Co/ca/ filed a 13F-HR form disclosing ownership of 774,240 shares of Meta Platforms, Inc. (MX:META) valued at $442,965,932 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 788,790 shares of Meta Platforms, Inc.. This represents a change in shares of -1.84% 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)
2026-05-11 2026-03-31 13F META PLATFORMS CL A 30303M102 774,240 -14,550 -1.84 442,966 -14.92 0.3488
2026-02-11 2025-12-31 13F META PLATFORMS CL A 30303M102 788,790 -222,050 -21.97 520,672 -29.86 0.3941
2025-11-12 2025-09-30 13F META PLATFORMS CL A 30303M102 1,010,840 -6,690 -0.66 742,341 -1.16 0.5685
2025-08-11 2025-06-30 13F META PLATFORMS CL A 30303M102 1,017,530 108,620 11.95 751,029 43.36 0.5952
2025-05-09 2025-03-31 13F META PLATFORMS CL A 30303M102 908,910 172,810 23.48 523,859 21.55 0.4331
2025-02-10 2024-12-31 13F META PLATFORMS CL A 30303M102 736,100 12,700 1.76 430,994 4.08 0.3338
2024-11-08 2024-09-30 13F META PLATFORMS CL A 30303M102 723,400 16,950 2.40 414,103 16.25 0.3045
2024-08-09 2024-06-30 13F META PLATFORMS CL A 30303M102 706,450 17,225 2.50 356,206 6.43 0.2579
2024-05-14 2024-03-31 13F META PLATFORMS CL A 30303M102 689,225 11,500 1.70 334,674 39.51 0.2496
2024-02-09 2023-12-31 13F META PLATFORMS CL A 30303M102 677,725 8,800 1.32 239,888 19.46 0.1899
2023-11-13 2023-09-30 13F META PLATFORMS CL A 30303M102 668,925 -215,700 -24.38 200,818 -20.90 0.1695
2023-08-11 2023-06-30 13F META PLATFORMS CL A 30303M102 884,625 -336,700 -27.57 253,870 -1.92 0.2121
2023-05-15 2023-03-31 13F META PLATFORMS CL A 30303M102 1,221,325 -7,250 -0.59 258,848 75.08 0.2257
2023-02-13 2022-12-31 13F META PLATFORMS CL A 30303M102 1,228,575 -5,700 -0.46 147,847 -11.72 0.1354
2022-11-14 2022-09-30 13F META PLATFORMS CL A 30303M102 1,234,275 -2,400 -0.19 167,466 -16.02 0.1620
2022-08-11 2022-06-30 13F META PLATFORMS CL A 30303M102 1,236,675 0 0.00 199,414 -27.48 0.1782
2022-05-11 2022-03-31 13F META PLATFORMS CL A 30303M102 1,236,675 35,800 2.98 274,987 -31.92 0.2074
2022-02-11 2021-12-31 13F META PLATFORMS CL A 30303M102 1,200,875 54,500 4.75 403,914 3.82 0.2796
2021-11-12 2021-09-30 13F FACEBOOK CL A 30303M102 1,146,375 -154,310 -11.86 389,068 -13.97 0.2746
2021-08-10 2021-06-30 13F FACEBOOK CL A 30303M102 1,300,685 -64,450 -4.72 452,261 12.48 0.3039
2021-05-14 2021-03-31 13F FACEBOOK CL A 30303M102 1,365,135 55,285 4.22 402,073 12.37 0.2804
2021-02-08 2020-12-31 13F FACEBOOK CL A 30303M102 1,309,850 4,050 0.31 357,799 4.62 0.2659
2020-11-13 2020-09-30 13F FACEBOOK COM 30303M102 1,305,800 227,500 21.10 341,989 39.67 0.2822
2020-08-13 2020-06-30 13F FACEBOOK COM 30303M102 1,078,300 34,600 3.32 244,850 40.65 0.2101
2020-05-14 2020-03-31 13F FACEBOOK COM 30303M102 1,043,700 915,300 712.85 174,089 560.58 0.1707
2020-02-14 2019-12-31 13F FACEBOOK COM 30303M102 128,400 0 0.00 26,354 15.26 0.0191
2019-11-13 2019-09-30 13F FACEBOOK COM 30303M102 128,400 0 0.00 22,865 -7.73 0.0183
2019-08-14 2019-06-30 13F FACEBOOK COM 30303M102 128,400 0 0.00 24,781 15.78 0.0183
2019-05-14 2019-03-31 13F FACEBOOK COM 30303M102 128,400 8,800 7.36 21,403 36.52 0.0158
2019-02-12 2018-12-31 13F FACEBOOK COM 30303M102 119,600 5,900 5.19 15,678 -16.16 0.0127
2018-11-13 2018-09-30 13F FACEBOOK COM 30303M102 113,700 0 0.00 18,699 -15.37 0.0126
2018-08-13 2018-06-30 13F FACEBOOK COM 30303M102 113,700 0 0.00 22,094 21.61 0.0164
2018-05-14 2018-03-31 13F FACEBOOK COM 30303M102 113,700 113,700 18,168 0.0136
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.