Alphabet Inc.
CH ˙ SWX ˙ US02079K1079
SecurityCH:GOOG / Alphabet Inc.
InstitutionTamar Securities, LLC
Latest Disclosed Ownership184,255 shares
Latest Disclosed Value $ 52,855,266
Tamar Securities, LLC ownership in GOOG / Alphabet Inc.

On May 14, 2026 - Tamar Securities, LLC filed a 13F-HR form disclosing ownership of 184,255 shares of Alphabet Inc. (CH:GOOG) valued at $52,855,266 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 232,603 shares of Alphabet Inc.. This represents a change in shares of -20.79% during the quarter.

Tamar Securities, LLC has a history of taking positions in derivatives of the underlying security (GOOG) 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.

CH:GOOG / Alphabet 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 ALPHABET CAP STK CL C 02079K107 184,255 -48,348 -20.79 52,855 -27.59 5.6581
2026-02-13 2025-12-31 13F ALPHABET CAP STK CL C 02079K107 232,603 -4,037 -1.71 72,991 26.65 7.7040
2025-11-14 2025-09-30 13F ALPHABET CAP STK CL C 02079K107 236,640 -638 -0.27 57,634 36.93 6.5492
2025-08-11 2025-06-30 13F ALPHABET CAP STK CL C 02079K107 237,278 4,405 1.89 42,091 15.69 5.1027
2025-05-15 2025-03-31 13F ALPHABET CAP STK CL C 02079K107 232,873 6,351 2.80 36,382 -15.66 4.9291
2025-01-22 2024-12-31 13F ALPHABET CAP STK CL C 02079K107 226,522 4,678 2.11 43,139 16.31 5.9497
2024-10-16 2024-09-30 13F ALPHABET CAP STK CL C 02079K107 221,844 46,057 26.20 37,090 15.04 5.2103
2024-10-10 2024-06-30 13F ALPHABET CAP STK CL C 02079K107 175,787 -47,266 -21.19 32,243 -5.06 5.2263
2024-05-13 2024-03-31 13F ALPHABET CAP STK CL C 02079K107 223,053 15,689 7.57 33,962 16.22 5.7294
2024-01-25 2023-12-31 13F ALPHABET CAP STK CL C 02079K107 207,364 41,089 24.71 29,224 33.30 5.7348
2023-11-14 2023-09-30 13F ALPHABET CAP STK CL C 02079K107 166,275 -3,682 -2.17 21,923 6.63 5.2844
2024-10-10 2023-06-30 13F ALPHABET CAP STK CL C 02079K107 169,957 -4,072 -2.34 20,560 13.59 5.0536
2024-10-10 2023-03-31 13F ALPHABET CAP STK CL C 02079K107 174,029 5,654 3.36 18,099 21.15 5.1976
2023-02-10 2022-12-31 13F ALPHABET CAP STK CL C 02079K107 168,375 5,961 3.67 14,940 -4.34 4.7396
2022-11-07 2022-09-30 13F ALPHABET CAP STK CL C 02079K107 162,414 155,906 2,395.61 15,616 9.69 4.9957
2022-08-05 2022-06-30 13F ALPHABET CAP STK CL C 02079K107 6,508 619 10.51 14,236 -13.45 4.6734
2022-04-27 2022-03-31 13F ALPHABET CAP STK CL C 02079K107 5,889 537 10.03 16,448 6.21 4.5908
2022-02-14 2021-12-31 13F ALPHABET CAP STK CL C 02079K107 5,352 5,352 15,487 4.5635
2021-08-05 2021-06-30 13F ALPHABET CAP STK CL C 02079K107 0 -5,341 -100.00 0 -100.00
2021-05-11 2021-03-31 13F ALPHABET CAP STK CL C 02079K107 5,341 5,341 11,049 4.2730
2021-01-27 2020-12-31 13F ALPHABET CAP STK CL C 02079K107 0 -4,848 -100.00 0 -100.00
2020-11-05 2020-09-30 13F ALPHABET CAP STK CL C 02079K107 4,848 1,891 63.95 7,125 70.45 4.4286
2020-09-10 2020-06-30 13F ALPHABET CAP STK CL C 02079K107 2,957 2,957 4,180 3.3308
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 ALPHABET CAP STK CL C Call 57 -69.68 n/a n/a n/a
2026-02-13 2025-12-31 13F ALPHABET CAP STK CL C Call 188 -14.16 n/a n/a n/a
2025-11-14 2025-09-30 13F ALPHABET CAP STK CL C Call 219 37.74 n/a n/a n/a
2025-08-11 2025-06-30 13F ALPHABET CAP STK CL C Call 160 412.90 n/a n/a n/a
2025-05-15 2025-03-31 13F ALPHABET CAP STK CL C Call 200 0.00 31 -18.42 n/a n/a n/a
2025-01-22 2024-12-31 13F ALPHABET CAP STK CL C Call 200 38 15.15 n/a n/a n/a
2024-10-16 2024-09-30 13F ALPHABET CAP STK CL C Call 33 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.