Meta Platforms, Inc.
MX ˙ BMV ˙ US30303M1027
SecurityMX:META / Meta Platforms, Inc.
InstitutionTamar Securities, LLC
Latest Disclosed Ownership73,030 shares
Latest Disclosed Value $ 41,782,376
Tamar Securities, LLC ownership in META / Meta Platforms, Inc.

On May 14, 2026 - Tamar Securities, LLC filed a 13F-HR form disclosing ownership of 73,030 shares of Meta Platforms, Inc. (MX:META) valued at $41,782,376 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 63,436 shares of Meta Platforms, Inc.. This represents a change in shares of 15.12% during the quarter.

Tamar Securities, LLC has a history of taking positions in derivatives of the underlying security (META) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:META / Meta Platforms, Inc. Historical Put/Call Ratio
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)
2026-05-14 2026-03-31 13F META PLATFORMS CL A 30303M102 73,030 9,594 15.12 41,782 -0.22 4.4728
2026-02-13 2025-12-31 13F META PLATFORMS CL A 30303M102 63,436 10,581 20.02 41,874 7.88 4.4197
2025-11-14 2025-09-30 13F META PLATFORMS CL A 30303M102 52,855 1,835 3.60 38,816 3.08 4.4108
2025-08-11 2025-06-30 13F META PLATFORMS CL A 30303M102 51,020 1,670 3.38 37,657 32.39 4.5653
2025-05-15 2025-03-31 13F META PLATFORMS CL A 30303M102 49,350 5,390 12.26 28,443 10.51 3.8536
2025-01-22 2024-12-31 13F META PLATFORMS CL A 30303M102 43,960 -535 -1.20 25,739 1.06 3.5499
2024-10-16 2024-09-30 13F META PLATFORMS CL A 30303M102 44,495 5,060 12.83 25,471 28.10 3.5780
2024-10-10 2024-06-30 13F META PLATFORMS CL A 30303M102 39,435 -83 -0.21 19,884 3.62 3.2230
2024-05-13 2024-03-31 13F META PLATFORMS CL A 30303M102 39,518 -8,776 -18.17 19,189 12.26 3.2372
2024-01-25 2023-12-31 13F META PLATFORMS CL A 30303M102 48,294 11,337 30.68 17,094 54.08 3.3545
2023-11-14 2023-09-30 13F META PLATFORMS CL A 30303M102 36,957 -6,996 -15.92 11,095 -12.04 2.6743
2024-10-10 2023-06-30 13F META PLATFORMS CL A 30303M102 43,953 -10,688 -19.56 12,614 8.92 3.1005
2024-10-10 2023-03-31 13F META PLATFORMS CL A 30303M102 54,641 -1,738 -3.08 11,581 70.70 3.3257
2023-02-10 2022-12-31 13F META PLATFORMS CL A 30303M102 56,379 -983 -1.71 6,785 -12.84 2.1524
2022-11-07 2022-09-30 13F META PLATFORMS CL A 30303M102 57,362 14,622 34.21 7,783 12.93 2.4899
2022-08-05 2022-06-30 13F META PLATFORMS CL A 30303M102 42,740 5,273 14.07 6,892 -17.27 2.2625
2022-04-27 2022-03-31 13F META PLATFORMS CL A 30303M102 37,467 13,546 56.63 8,331 3.54 2.3253
2022-02-14 2021-12-31 13F META PLATFORMS CL A 30303M102 23,921 23,921 8,046 2.3709
2021-08-05 2021-06-30 13F FACEBOOK CL A 30303M102 0 -20,892 -100.00 0 -100.00
2021-05-11 2021-03-31 13F FACEBOOK CL A 30303M102 20,892 20,892 6,153 2.3795
2021-01-27 2020-12-31 13F FACEBOOK CL A 30303M102 0 -15,656 -100.00 0 -100.00
2020-11-05 2020-09-30 13F FACEBOOK CL A 30303M102 15,656 5,691 57.11 4,100 81.18 2.5484
2020-09-10 2020-06-30 13F FACEBOOK CL A 30303M102 9,965 9,965 2,263 1.8032
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F META PLATFORMS CL A Call 229 -13.64 n/a n/a n/a
2026-02-13 2025-12-31 13F META PLATFORMS CL A Call 264 20.00 n/a n/a n/a
2025-11-14 2025-09-30 13F META PLATFORMS CL A Call 220 -0.45 n/a n/a n/a
2025-08-11 2025-06-30 13F META PLATFORMS CL A Call 221 689.29 n/a n/a n/a
2024-10-10 2023-06-30 13F META PLATFORMS CL A Call 29 33.33 n/a n/a n/a
2024-10-10 2023-03-31 13F META PLATFORMS CL A Call 21 n/a n/a n/a
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.