Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionWestmount Partners, LLC
Latest Disclosed Ownership5,381 shares
Latest Disclosed Value $ 3,078,864
Westmount Partners, LLC reports 2.32% decrease in ownership of META / Meta Platforms, Inc.

On April 16, 2026 - Westmount Partners, LLC filed a 13F-HR form disclosing ownership of 5,381 shares of Meta Platforms, Inc. (MX:META) valued at $3,078,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 5,509 shares of Meta Platforms, Inc.. This represents a change in shares of -2.32% 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)
2026-04-16 2026-03-31 13F META PLATFORMS CL A 30303M102 5,381 -128 -2.32 3,079 -15.35 0.7578
2026-01-15 2025-12-31 13F META PLATFORMS CL A 30303M102 5,509 611 12.47 3,636 3.50 0.9066
2025-10-14 2025-09-30 13F META PLATFORMS CL A 30303M102 4,898 -598 -10.88 3,514 -13.39 0.9074
2025-07-09 2025-06-30 13F META PLATFORMS CL A 30303M102 5,496 209 3.95 4,056 33.11 1.1140
2025-05-01 2025-03-31 13F META PLATFORMS CL A 30303M102 5,287 -364 -6.44 3,047 -7.89 0.9294
2025-01-13 2024-12-31 13F META PLATFORMS CL A 30303M102 5,651 656 13.13 3,309 15.70 1.0051
2025-01-13 2024-09-30 13F META PLATFORMS CL A 30303M102 4,995 374 8.09 2,860 22.60 0.8599
2025-01-28 2024-06-30 13F META PLATFORMS CL A 30303M102 4,621 261 5.99 2,332 10.16 0.7698
2025-01-28 2024-03-31 13F META PLATFORMS CL A 30303M102 4,360 282 6.92 2,117 46.71 0.7616
2025-01-28 2023-12-31 13F META PLATFORMS CL A 30303M102 4,078 385 10.43 1,443 30.23 0.5894
2025-01-28 2023-09-30 13F META PLATFORMS CL A 30303M102 3,693 -13 -0.35 1,109 4.23 0.4884
2025-01-28 2023-06-30 13F META PLATFORMS CL A 30303M102 3,706 2 0.05 1,064 35.41 0.4629
2025-01-29 2023-03-31 13F META PLATFORMS CL A 30303M102 3,704 101 2.80 785 81.29 0.3629
2025-01-28 2022-12-31 13F META PLATFORMS CL A 30303M102 3,603 3,603 434 0.2253
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.