Alphabet Inc.
CL ˙ SNSE ˙ US02079K3059
SecurityCL:GOOGL / Alphabet Inc.
InstitutionAltarock Partners Llc
Latest Disclosed Ownership43,391 shares
Latest Disclosed Value $ 12,477,516
Altarock Partners Llc reports 74.38% decrease in ownership of GOOGL / Alphabet Inc.

On May 15, 2026 - Altarock Partners Llc filed a 13F-HR form disclosing ownership of 43,391 shares of Alphabet Inc. (CL:GOOGL) valued at $12,477,516 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 169,391 shares of Alphabet Inc.. This represents a change in shares of -74.38% 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 ALPHABET INC-CL A COMM 02079K305 43,391 -126,000 -74.38 12,478 -76.47 0.3024
2026-02-13 2025-12-31 13F ALPHABET INC-CL A COMM 02079K305 169,391 -175,000 -50.81 53,019 -36.67 1.0396
2025-11-14 2025-09-30 13F ALPHABET INC-CL A COMM 02079K305 344,391 -701,038 -67.06 83,721 -54.56 1.5308
2025-08-14 2025-06-30 13F ALPHABET INC-CL A COMM 02079K305 1,045,429 -2,408,938 -69.74 184,236 -65.51 3.3636
2025-05-14 2025-03-31 13F ALPHABET INC-CL A COMM 02079K305 3,454,367 -26,434 -0.76 534,183 -18.93 10.7410
2025-02-14 2024-12-31 13F ALPHABET INC-CL A COMM 02079K305 3,480,801 146,896 4.41 658,916 19.17 13.3286
2024-11-13 2024-09-30 13F ALPHABET INC-CL A COMM 02079K305 3,333,905 -668,205 -16.70 552,928 -24.15 10.8902
2024-08-14 2024-06-30 13F ALPHABET INC-CL A COMM 02079K305 4,002,110 -283,000 -6.60 728,984 12.71 15.0042
2024-05-21 2024-03-31 13F/A-1 ALPHABET INC-CL A COMM 02079K305 4,285,110 -574,720 -11.83 646,752 -4.73 13.8982
2024-05-15 2024-03-31 13F ALPHABET INC-CL A COMM 02079K305 4,285,110 -574,720 646,752 13.8982
2024-02-15 2023-12-31 13F ALPHABET INC CAP STK CL A COMM 02079K305 4,859,830 -399,392 -7.59 678,870 -1.36 15.1423
2023-11-14 2023-09-30 13F ALPHABET INC CAP STK CL A COMM 02079K305 5,259,222 -477,378 -8.32 688,222 0.23 17.2372
2023-08-14 2023-06-30 13F ALPHABET INC CAP STK CL A COMM 02079K305 5,736,600 -545,817 -8.69 686,671 5.37 16.4908
2023-05-16 2023-03-31 13F ALPHABET INC CAP STK CL A COMM 02079K305 6,282,417 -148,000 -2.30 651,675 14.86 17.8507
2023-02-13 2022-12-31 13F ALPHABET INC CAP STK CL A COMM 02079K305 6,430,417 -573,183 -8.18 567,356 -15.31 17.8310
2022-11-14 2022-09-30 13F ALPHABET INC - CL A COMM 02079K305 7,003,600 6,665,470 1,971.27 669,894 -9.09 21.9307
2022-08-12 2022-06-30 13F ALPHABET INC - CL A COMM 02079K305 338,130 3,020 0.90 736,873 -20.94 22.7395
2022-05-13 2022-03-31 13F ALPHABET INC - CL A COMM 02079K305 335,110 46,734 16.21 932,058 11.57 23.7647
2022-02-14 2021-12-31 13F ALPHABET INC - CL A COMM 02079K305 288,376 2,500 0.87 835,437 9.31 22.0194
2021-11-15 2021-09-30 13F ALPHABET INC - CL A COMM 02079K305 285,876 -34,040 -10.64 764,295 -2.16 20.6169
2021-08-13 2021-06-30 13F ALPHABET INC - CL A COMM 02079K305 319,916 0 0.00 781,168 18.39 21.6227
2021-05-14 2021-03-31 13F ALPHABET INC - CL A COMM 02079K305 319,916 0 0.00 659,833 17.68 25.0797
2021-02-16 2020-12-31 13F ALPHABET INC - CL A COMM 02079K305 319,916 -40,969 -11.35 560,698 6.01 23.4997
2020-11-13 2020-09-30 13F ALPHABET INC - CL A COMM 02079K305 360,885 642 0.18 528,913 3.54 24.9477
2020-08-13 2020-06-30 13F ALPHABET INC - CL A COMM 02079K305 360,243 69,300 23.82 510,843 51.11 26.1898
2020-05-13 2020-03-31 13F ALPHABET INC - CL A COMM 02079K305 290,943 60,943 26.50 338,061 9.74 21.4678
2020-02-13 2019-12-31 13F ALPHABET INC - CL A COMM 02079K305 230,000 230,000 308,060 19.0567
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.