Alphabet Inc.
CH ˙ SWX ˙ US02079K1079
SecurityCH:GOOG / Alphabet Inc.
InstitutionPrimecap Management Co/ca/
Latest Disclosed Ownership5,720,910 shares
Latest Disclosed Value $ 1,641,100,244
Primecap Management Co/ca/ reports 0.72% decrease in ownership of GOOG / Alphabet Inc.

On May 11, 2026 - Primecap Management Co/ca/ filed a 13F-HR form disclosing ownership of 5,720,910 shares of Alphabet Inc. (CH:GOOG) valued at $1,641,100,244 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,762,640 shares of Alphabet Inc.. This represents a change in shares of -0.72% 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)
2026-05-11 2026-03-31 13F ALPHABET CAP STK CL C 02079K107 5,720,910 -41,730 -0.72 1,641,100 -9.25 1.2921
2026-02-11 2025-12-31 13F ALPHABET CAP STK CL C 02079K107 5,762,640 -364,306 -5.95 1,808,316 21.18 1.3688
2025-11-12 2025-09-30 13F ALPHABET CAP STK CL C 02079K107 6,126,946 -2,349,411 -27.72 1,492,218 -0.76 1.1429
2025-08-11 2025-06-30 13F ALPHABET CAP STK CL C 02079K107 8,476,357 -2,419,288 -22.20 1,503,621 -11.67 1.1916
2025-05-09 2025-03-31 13F ALPHABET CAP STK CL C 02079K107 10,895,645 -484,130 -4.25 1,702,227 -21.45 1.4073
2025-02-10 2024-12-31 13F ALPHABET CAP STK CL C 02079K107 11,379,775 -1,012,955 -8.17 2,167,164 4.60 1.6784
2024-11-08 2024-09-30 13F ALPHABET CAP STK CL C 02079K107 12,392,730 -135,210 -1.08 2,071,941 -9.83 1.5234
2024-08-09 2024-06-30 13F ALPHABET CAP STK CL C 02079K107 12,527,940 -147,540 -1.16 2,297,875 19.06 1.6636
2024-05-14 2024-03-31 13F ALPHABET CAP STK CL C 02079K107 12,675,480 -63,295 -0.50 1,929,969 7.50 1.4394
2024-02-09 2023-12-31 13F ALPHABET CAP STK CL C 02079K107 12,738,775 -162,175 -1.26 1,795,276 5.54 1.4213
2023-11-13 2023-09-30 13F ALPHABET CAP STK CL C 02079K107 12,900,950 -138,575 -1.06 1,700,990 7.84 1.4358
2023-08-11 2023-06-30 13F ALPHABET CAP STK CL C 02079K107 13,039,525 -705,460 -5.13 1,577,391 10.35 1.3180
2023-05-15 2023-03-31 13F ALPHABET CAP STK CL C 02079K107 13,744,985 -490,570 -3.45 1,429,478 13.17 1.2465
2023-02-13 2022-12-31 13F ALPHABET CAP STK CL C 02079K107 14,235,555 -278,685 -1.92 1,263,121 -9.49 1.1564
2022-11-14 2022-09-30 13F ALPHABET CAP STK CL C 02079K107 14,514,240 13,781,948 1,882.03 1,395,544 -12.88 1.3504
2022-08-11 2022-06-30 13F ALPHABET CAP STK CL C 02079K107 732,292 -10,880 -1.46 1,601,852 -22.83 1.4318
2022-05-11 2022-03-31 13F ALPHABET CAP STK CL C 02079K107 743,172 -35,400 -4.55 2,075,672 -7.87 1.5656
2022-02-11 2021-12-31 13F ALPHABET CAP STK CL C 02079K107 778,572 -45,345 -5.50 2,252,868 2.59 1.5594
2021-11-12 2021-09-30 13F ALPHABET CAP STK CL C 02079K107 823,917 -20,853 -2.47 2,195,994 3.72 1.5500
2021-08-10 2021-06-30 13F ALPHABET CAP STK CL C 02079K107 844,770 -87,539 -9.39 2,117,264 9.78 1.4225
2021-05-14 2021-03-31 13F ALPHABET CAP STK CL C 02079K107 932,309 -123,543 -11.70 1,928,602 4.26 1.3448
2021-02-08 2020-12-31 13F ALPHABET CAP STK CL C 02079K107 1,055,852 -222,448 -17.40 1,849,726 -1.54 1.3749
2020-11-13 2020-09-30 13F ALPHABET INC CLASS C COM 02079K107 1,278,300 -137,523 -9.71 1,878,590 -6.14 1.5499
2020-08-13 2020-06-30 13F ALPHABET INC CLASS C COM 02079K107 1,415,823 -130,002 -8.41 2,001,422 11.34 1.7173
2020-05-14 2020-03-31 13F ALPHABET INC CLASS C COM 02079K107 1,545,825 -200,169 -11.46 1,797,501 -23.00 1.7626
2020-02-14 2019-12-31 13F ALPHABET INC CLASS C COM 02079K107 1,745,994 -235,480 -11.88 2,334,429 -3.35 1.6931
2019-11-13 2019-09-30 13F ALPHABET INC CLASS C COM 02079K107 1,981,474 -23,814 -1.19 2,415,417 11.44 1.9318
2019-08-14 2019-06-30 13F ALPHABET INC CLASS C COM 02079K107 2,005,288 -115,285 -5.44 2,167,536 -12.88 1.6028
2019-05-14 2019-03-31 13F ALPHABET INC CLASS C COM 02079K107 2,120,573 -2,430 -0.11 2,488,090 13.17 1.8311
2019-02-12 2018-12-31 13F ALPHABET INC CLASS C COM 02079K107 2,123,003 -92,140 -4.16 2,198,603 -16.84 1.7814
2018-11-13 2018-09-30 13F ALPHABET INC CLASS C COM 02079K107 2,215,143 -29,071 -1.30 2,643,707 5.59 1.7846
2018-08-13 2018-06-30 13F ALPHABET INC CLASS C COM 02079K107 2,244,214 -3,393 -0.15 2,503,757 7.96 1.8563
2018-05-14 2018-03-31 13F ALPHABET INC CLASS C COM 02079K107 2,247,607 -58,828 -2.55 2,319,058 -3.91 1.7401
2018-02-13 2017-12-31 13F ALPHABET INC CLASS C COM 02079K107 2,306,435 -9,118 -0.39 2,413,454 8.67 1.8521
2017-11-13 2017-09-30 13F ALPHABET INC CLASS C COM 02079K107 2,315,553 -21,987 -0.94 2,220,870 4.55 1.8382
2017-08-11 2017-06-30 13F ALPHABET INC CLASS C COM 02079K107 2,337,540 -150,039 -6.03 2,124,193 2.94 1.8248
2017-05-12 2017-03-31 13F ALPHABET INC CLASS C COM 02079K107 2,487,579 61,017 2.51 2,063,596 10.18 1.8730
2017-02-13 2016-12-31 13F ALPHABET INC CLASS C COM 02079K107 2,426,562 13,217 0.55 1,872,869 -0.16 1.8429
2016-11-14 2016-09-30 13F ALPHABET INC CLASS C COM 02079K107 2,413,345 -75,351 -3.03 1,875,869 8.91 1.8722
2016-08-12 2016-06-30 13F ALPHABET INC CLASS C COM 02079K107 2,488,696 -29,531 -1.17 1,722,427 -8.18 1.8340
2016-05-12 2016-03-31 13F ALPHABET INC CLASS C COM 02079K107 2,518,227 -962 -0.04 1,875,953 -1.87 1.9457
2016-02-12 2015-12-31 13F ALPHABET INC CLASS C COM 02079K107 2,519,189 -23,514 -0.92 1,911,762 23.58 1.9546
2015-11-12 2015-09-30 13F ALPHABET INC CLASS C COM 02079K107 2,542,703 -144,962 -5.39 1,547,031 10.58 1.7172
2015-08-13 2015-06-30 13F GOOGLE CLASS C COM 38259P706 2,687,665 2,669 0.10 1,398,957 -4.92 1.3760
2015-05-14 2015-03-31 13F GOOGLE CLASS C COM 38259P706 2,684,996 48,893 1.85 1,471,378 6.03 1.4369
2015-02-12 2014-12-31 13F GOOGLE CLASS C COM 38259P706 2,636,103 57,481 2.23 1,387,645 -6.79 1.4062
2014-11-13 2014-09-30 13F GOOGLE CLASS C COM 38259P706 2,578,622 1,787 0.07 1,488,793 0.43 1.5929
2014-08-14 2014-06-30 13F GOOGLE CLASS C COM 38259P706 2,576,835 -5,641 -0.22 1,482,402 -48.50 1.6231
2014-05-14 2014-03-31 13F GOOGLE COM 38259P706 2,582,476 2,582,476 2,878,195 3.2576
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.