Alphabet Inc.
CH ˙ SWX ˙ US02079K1079
SecurityCH:GOOG / Alphabet Inc.
InstitutionS.A. Mason LLC
Latest Disclosed Ownership6,162 shares
Latest Disclosed Value $ 1,767,591
S.A. Mason LLC reports 10.31% increase in ownership of GOOG / Alphabet Inc.

On April 27, 2026 - S.A. Mason LLC filed a 13F-HR form disclosing ownership of 6,162 shares of Alphabet Inc. (CH:GOOG) valued at $1,767,591 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 10,851 shares of Alphabet Inc.. This represents a change in shares of 10.31% 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)
2026-04-27 2026-03-31 13F Alphabet COM 02079K107 6,162 576 10.31 1,768 0.86 0.6635
2026-01-29 2025-12-31 13F Alphabet COM 02079K107 5,586 177 3.27 1,753 33.03 0.6931
2025-10-14 2025-09-30 13F Alphabet COM 02079K107 5,409 0 0.00 1,317 37.33 0.5814
2025-07-14 2025-06-30 13F Alphabet COM 02079K107 5,409 39 0.73 959 14.30 0.4643
2025-04-23 2025-03-31 13F Alphabet COM 02079K107 5,370 0 0.00 839 -17.91 0.4433
2025-01-24 2024-12-31 13F Alphabet COM 02079K107 5,370 45 0.85 1,023 14.83 0.5372
2024-10-25 2024-09-30 13F Alphabet COM 02079K107 5,325 80 1.53 890 -7.48 0.4720
2024-07-10 2024-06-30 13F Alphabet COM 02079K107 5,245 550 11.71 962 34.73 0.5471
2024-04-15 2024-03-31 13F Alphabet COM 02079K107 4,695 175 3.87 715 12.09 0.4297
2024-01-17 2023-12-31 13F Alphabet COM 02079K107 4,520 0 0.00 637 7.06 0.4272
2023-10-13 2023-09-30 13F Alphabet COM 02079K107 4,520 20 0.44 596 27.14 0.4297
2023-07-20 2023-06-30 13F Alphabet COM 02079K107 4,500 0 0.00 468 0.00 0.3399
2023-05-10 2023-03-31 13F Alphabet COM 02079K107 4,500 -200 -4.26 468 12.23 0.3399
2023-01-10 2022-12-31 13F Alphabet COM 02079K107 4,700 0 0.00 417 -7.74 0.3141
2022-10-20 2022-09-30 13F Alphabet COM 02079K107 4,700 4,462 1,874.79 452 -13.24 0.3575
2022-07-07 2022-06-30 13F Alphabet COM 02079K107 238 0 0.00 521 -21.65 0.3806
2022-05-12 2022-03-31 13F Alphabet COM 02079K107 238 0 0.00 665 -3.48 0.4147
2022-01-04 2021-12-31 13F Alphabet COM 02079K107 238 10 4.39 689 13.32 0.4147
2021-10-12 2021-09-30 13F Alphabet COM 02079K107 228 26 12.87 608 20.16 0.4003
2021-07-07 2021-06-30 13F Alphabet COM 02079K107 202 0 0.00 506 21.05 0.3481
2021-04-20 2021-03-31 13F Alphabet COM 02079K107 202 10 5.21 418 24.40 0.3123
2021-02-02 2020-12-31 13F Alphabet COM 02079K107 192 0 0.00 336 19.15 0.2797
2020-10-21 2020-09-30 13F Alphabet COM 02079K107 192 0 0.00 282 4.06 0.2683
2020-07-27 2020-06-30 13F Alphabet COM 02079K107 192 0 0.00 271 21.52 0.2856
2020-05-14 2020-03-31 13F Alphabet COM 02079K107 192 0 0.00 223 -13.23 0.2707
2020-01-29 2019-12-31 13F Alphabet COM 02079K107 192 192 257 0.2449
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.