Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionWorldquant Millennium Advisors Llc
Latest Disclosed Ownership761,307 shares
Latest Disclosed Value $ 435,566,574
Worldquant Millennium Advisors Llc reports 9.63% increase in ownership of META / Meta Platforms, Inc.

On May 15, 2026 - Worldquant Millennium Advisors Llc filed a 13F-HR form disclosing ownership of 761,307 shares of Meta Platforms, Inc. (MX:META) valued at $435,566,574 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 694,463 shares of Meta Platforms, Inc.. This represents a change in shares of 9.63% 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)
2026-05-15 2026-03-31 13F META PLATFORMS CL A 30303M102 761,307 66,844 9.63 435,567 -4.98 1.6796
2026-02-17 2025-12-31 13F META PLATFORMS CL A 30303M102 694,463 12,262 1.80 458,408 -8.50 1.7785
2025-11-14 2025-09-30 13F META PLATFORMS CL A 30303M102 682,201 238,330 53.69 500,995 52.92 2.1642
2025-08-14 2025-06-30 13F META PLATFORMS CL A 30303M102 443,871 60,236 15.70 327,617 48.17 1.6274
2025-05-15 2025-03-31 13F META PLATFORMS CL A 30303M102 383,635 -289,394 -43.00 221,112 -43.89 1.3934
2025-02-14 2024-12-31 13F META PLATFORMS CL A 30303M102 673,029 316,392 88.72 394,065 93.02 2.5519
2024-11-14 2024-09-30 13F META PLATFORMS CL A 30303M102 356,637 13,430 3.91 204,153 17.97 1.4938
2024-08-14 2024-06-30 13F META PLATFORMS CL A 30303M102 343,207 -27,398 -7.39 173,052 -3.84 1.5780
2024-05-15 2024-03-31 13F META PLATFORMS CL A 30303M102 370,605 94,494 34.22 179,958 84.13 2.2203
2024-02-14 2023-12-31 13F META PLATFORMS CL A 30303M102 276,111 195,223 241.35 97,732 302.47 1.3678
2023-11-14 2023-09-30 13F META PLATFORMS CL A 30303M102 80,888 -119,389 -59.61 24,283 -57.75 0.3749
2023-08-14 2023-06-30 13F META PLATFORMS CL A 30303M102 200,277 1,695 0.85 57,475 136,745.24 0.9730
2023-05-15 2023-03-31 13F META PLATFORMS CL A 30303M102 198,582 66,401 50.23 42 180.00 0.7790
2023-02-14 2022-12-31 13F META PLATFORMS CL A 30303M102 132,181 23,012 21.08 16 -99.90 0.3623
2022-11-14 2022-09-30 13F META PLATFORMS CL A 30303M102 109,169 -108,390 -49.82 14,812 -57.78 0.3599
2022-08-15 2022-06-30 13F META PLATFORMS CL A 30303M102 217,559 61,689 39.58 35,081 1.22 1.0042
2022-05-16 2022-03-31 13F META PLATFORMS CL A 30303M102 155,870 -6,563 -4.04 34,659 -36.56 0.8447
2022-02-14 2021-12-31 13F META PLATFORMS CL A 30303M102 162,433 -63,477 -28.10 54,634 -28.74 1.0859
2021-11-15 2021-09-30 13F FACEBOOK CL A 30303M102 225,910 -83,831 -27.06 76,672 -28.81 1.6773
2021-08-16 2021-06-30 13F FACEBOOK CL A 30303M102 309,741 -51,667 -14.30 107,700 1.18 2.3801
2021-05-17 2021-03-31 13F FACEBOOK CL A 30303M102 361,408 139,274 62.70 106,445 75.43 2.2602
2021-02-16 2020-12-31 13F FACEBOOK CL A 30303M102 222,134 -65,712 -22.83 60,678 -19.51 1.3266
2020-11-16 2020-09-30 13F FACEBOOK CL A 30303M102 287,846 -110,637 -27.76 75,387 -16.68 1.7862
2020-08-14 2020-06-30 13F FACEBOOK CL A 30303M102 398,483 -53,391 -11.82 90,484 20.05 2.0823
2020-05-14 2020-03-31 13F FACEBOOK CL A 30303M102 451,874 -26,127 -5.47 75,373 -23.18 1.8332
2020-02-14 2019-12-31 13F FACEBOOK CL A 30303M102 478,001 -31,054 -6.10 98,110 8.23 1.8782
2019-11-14 2019-09-30 13F FACEBOOK CL A 30303M102 509,055 116,626 29.72 90,652 19.69 1.7626
2019-08-14 2019-06-30 13F FACEBOOK CL A 30303M102 392,429 106,795 37.39 75,739 59.08 1.4423
2019-05-14 2019-03-31 13F FACEBOOK CL A 30303M102 285,634 218,047 322.62 47,612 437.38 1.1292
2019-02-14 2018-12-31 13F FACEBOOK CL A 30303M102 67,587 67,587 8,860 0.2622
2018-11-14 2018-09-30 13F FACEBOOK CL A 30303M102 0 -193,915 -100.00 0 -100.00
2018-08-14 2018-06-30 13F FACEBOOK CL A 30303M102 193,915 193,915 37,682 1.4452
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.