Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership3,836,760 shares
Latest Disclosed Value $ 2,195,125,345
Rhumbline Advisers reports 3.52% decrease in ownership of META / Meta Platforms, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 3,836,760 shares of Meta Platforms, Inc. (MX:META) valued at $2,195,125,345 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,976,638 shares of Meta Platforms, Inc.. This represents a change in shares of -3.52% 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 META PLATFORMS COM 30303M102 3,836,760 -139,878 -3.52 2,195,125 -16.37 1.8778
2026-02-13 2025-12-31 13F META PLATFORMS COM 30303M102 3,976,638 -49,800 -1.24 2,624,939 -11.23 2.1221
2025-11-06 2025-09-30 13F META PLATFORMS COM 30303M102 4,026,438 -31,073 -0.77 2,956,935 -1.26 2.3748
2025-08-12 2025-06-30 13F META PLATFORMS COM 30303M102 4,057,511 -67,033 -1.63 2,994,808 25.98 2.5647
2025-05-29 2025-03-31 13F/A-1 META PLATFORMS COM 30303M102 4,124,544 -122,064 -2.87 2,377,222 -4.39 2.2237
2025-04-08 2025-03-31 13F META PLATFORMS COM 30303M102 4,124,544 -122,064 2,377,222 2.2237
2025-05-29 2024-12-31 13F/A-1 META PLATFORMS COM 30303M102 4,246,608 -64,459 -1.50 2,486,431 0.75 2.2242
2025-01-30 2024-12-31 13F META PLATFORMS COM 30303M102 4,246,608 -64,459 2,486,431 2.2242
2024-11-12 2024-09-30 13F META PLATFORMS COM 30303M102 4,311,067 -29,468 -0.68 2,467,827 12.76 2.2262
2024-08-01 2024-06-30 13F META PLATFORMS COM 30303M102 4,340,535 32,804 0.76 2,188,584 4.63 2.0569
2024-05-09 2024-03-31 13F META PLATFORMS COM 30303M102 4,307,731 -4,586 -0.11 2,091,748 37.04 2.0087
2024-02-08 2023-12-31 13F META PLATFORMS COM 30303M102 4,312,317 -29,425 -0.68 1,526,388 17.11 1.5998
2023-11-09 2023-09-30 13F META PLATFORMS COM 30303M102 4,341,742 13,628 0.31 1,303,434 4.94 1.5130
2023-08-08 2023-06-30 13F META PLATFORMS COM 30303M102 4,328,114 108,971 2.58 1,242,082 138,835.35 1.3913
2023-05-11 2023-03-31 13F META PLATFORMS COM 30303M102 4,219,143 -40,368 -0.95 894 -99.83 1.1033
2023-02-14 2022-12-31 13F META PLATFORMS COM 30303M102 4,259,511 117,810 2.84 512,590 -8.78 0.6891
2022-11-10 2022-09-30 13F META PLATFORMS COM 30303M102 4,141,701 113,037 2.81 561,946 -13.50 0.8371
2022-08-11 2022-06-30 13F META PLATFORMS COM 30303M102 4,028,664 119,624 3.06 649,622 -25.26 0.9480
2022-05-12 2022-03-31 13F META PLATFORMS COM 30303M102 3,909,040 -30,649 -0.78 869,214 -34.40 1.1188
2022-02-10 2021-12-31 13F META PLATFORMS COM 30303M102 3,939,689 39,097 1.00 1,325,114 0.10 1.6241
2021-11-12 2021-09-30 13F FACEBOOK INC CL A COM 30303M102 3,900,592 -38,324 -0.97 1,323,822 -3.34 1.7917
2021-08-05 2021-06-30 13F FACEBOOK INC CL A COM 30303M102 3,938,916 -229,452 -5.50 1,369,600 11.56 1.7972
2021-05-06 2021-03-31 13F FACEBOOK INC CL A COM 30303M102 4,168,368 -228,310 -5.19 1,227,709 2.22 1.6680
2021-02-10 2020-12-31 13F FACEBOOK INC CL A COM 30303M102 4,396,678 -80,927 -1.81 1,200,997 2.41 1.6576
2020-11-12 2020-09-30 13F FACEBOOK INC CL A COM 30303M102 4,477,605 -26,303 -0.58 1,172,685 14.67 1.8376
2020-08-13 2020-06-30 13F FACEBOOK INC CL A COM 30303M102 4,503,908 262,817 6.20 1,022,702 44.57 1.7078
2020-05-06 2020-03-31 13F FACEBOOK INC CL A COM 30303M102 4,241,091 45,373 1.08 707,414 -17.85 1.4825
2020-02-05 2019-12-31 13F FACEBOOK INC CL A COM 30303M102 4,195,718 -22,082 -0.52 861,171 14.65 1.4402
2019-10-23 2019-09-30 13F FACEBOOK INC CL A COM 30303M102 4,217,800 97,384 2.36 751,106 -5.55 1.3725
2019-08-14 2019-06-30 13F FACEBOOK INC CL A COM 30303M102 4,120,416 -37,135 -0.89 795,240 14.75 1.4928
2019-05-01 2019-03-31 13F FACEBOOK INC CL A COM 30303M102 4,157,551 194,485 4.91 693,022 33.40 1.3420
2019-01-31 2018-12-31 13F FACEBOOK INC CL A COM 30303M102 3,963,066 -22,490 -0.56 519,518 -20.74 1.1305
2018-11-07 2018-09-30 13F FACEBOOK INC CL A COM 30303M102 3,985,556 -56,794 -1.40 655,465 -16.56 1.2659
2018-08-06 2018-06-30 13F FACEBOOK INC CL A COM 30303M102 4,042,350 87,323 2.21 785,509 24.29 1.5842
2018-05-02 2018-03-31 13F FACEBOOK INC CL A COM 30303M102 3,955,027 -24,850 -0.62 631,974 -10.01 1.3199
2018-02-09 2017-12-31 13F FACEBOOK INC CL A COM 30303M102 3,979,877 71,483 1.83 702,289 5.16 1.4264
2017-11-06 2017-09-30 13F FACEBOOK INC CL A COM 30303M102 3,908,394 52,648 1.37 667,827 14.72 1.4521
2017-08-02 2017-06-30 13F FACEBOOK INC CL A COM 30303M102 3,855,746 114,141 3.05 582,141 9.53 1.3287
2017-05-02 2017-03-31 13F FACEBOOK INC CL A COM 30303M102 3,741,605 54,953 1.49 531,495 25.31 1.2415
2017-01-27 2016-12-31 13F FACEBOOK INC CL A COM 30303M102 3,686,652 107,498 3.00 424,149 -7.61 1.0749
2016-11-08 2016-09-30 13F FACEBOOK INC CL A COM 30303M102 3,579,154 134,236 3.90 459,098 16.62 1.2651
2016-08-11 2016-06-30 13F FACEBOOK INC CL A COM 30303M102 3,444,918 231,575 7.21 393,685 7.38 1.1665
2016-05-02 2016-03-31 13F FACEBOOK INC COM COM 30303M102 3,213,343 142,630 4.64 366,642 14.08 1.1376
2016-02-03 2015-12-31 13F FACEBOOK INC COM COM 30303M102 3,070,713 50 0.00 321,381 16.42 1.0342
2015-11-04 2015-09-30 13F FACEBOOK INC COM COM 30303M102 3,070,663 154,065 5.28 276,053 10.36 0.9392
2015-08-04 2015-06-30 13F FACEBOOK INC COM COM 30303M102 2,916,598 -391,158 -11.83 250,142 -8.02 0.7973
2015-05-12 2015-03-31 13F FACEBOOK INC COM COM 30303M102 3,307,756 -36,000 -1.08 271,947 4.24 0.7845
2015-02-06 2014-12-31 13F FACEBOOK INC COM COM 30303M102 3,343,756 43,798 1.33 260,880 0.02 0.7579
2014-11-12 2014-09-30 13F FACEBOOK INC COM COM 30303M102 3,299,958 142,995 4.53 260,829 22.78 0.7835
2014-08-06 2014-06-30 13F FACEBOOK INC COM COM 30303M102 3,156,963 145,391 4.83 212,432 17.10 0.6234
2014-05-06 2014-03-31 13F FACEBOOK INC COM COM 30303M102 3,011,572 100,035 3.44 181,417 13.99 0.5381
2014-02-03 2013-12-31 13F FACEBOOK INC COM COM 30303M102 2,911,537 996,993 52.07 159,145 65.45 0.4695
2013-11-05 2013-09-30 13F FACEBOOK INC COM COM 30303M102 1,914,544 -69,385 -3.50 96,187 95.03 0.2980
2013-08-07 2013-06-30 13F FACEBOOK INC COM COM 30303M102 1,983,929 1,983,929 49,320 0.1585
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.