Alphabet Inc.
MX ˙ BMV ˙ US02079K3059
SecurityMX:GOOGL / Alphabet Inc.
InstitutionMairs & Power Inc
Latest Disclosed Ownership55,766 shares
Latest Disclosed Value $ 16,036,071
Mairs & Power Inc reports 11.80% increase in ownership of GOOGL / Alphabet Inc.

On May 13, 2026 - Mairs & Power Inc filed a 13F-HR form disclosing ownership of 55,766 shares of Alphabet Inc. (MX:GOOGL) valued at $16,036,071 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 49,881 shares of Alphabet Inc.. This represents a change in shares of 11.80% 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)
2026-05-13 2026-03-31 13F ALPHABET CAP STK CL A 02079K305 55,766 5,885 11.80 16,036 2.72 0.1639
2026-02-17 2025-12-31 13F ALPHABET CAP STK CL A 02079K305 49,881 23,613 89.89 15,613 144.51 0.1503
2025-11-14 2025-09-30 13F ALPHABET CAP STK CL A 02079K305 26,268 2,391 10.01 6,386 51.77 0.0600
2025-08-14 2025-06-30 13F ALPHABET CAP STK CL A 02079K305 23,877 90 0.38 4,208 14.38 0.0415
2025-05-15 2025-03-31 13F ALPHABET CAP STK CL A 02079K305 23,787 -2,104 -8.13 3,678 -24.95 0.0383
2025-02-14 2024-12-31 13F ALPHABET CAP STK CL A 02079K305 25,891 -3,077 -10.62 4,901 2.02 0.0474
2024-11-14 2024-09-30 13F ALPHABET CAP STK CL A 02079K305 28,968 -1,831 -5.94 4,804 -14.37 0.0452
2024-08-14 2024-06-30 13F ALPHABET CAP STK CL A 02079K305 30,799 -1,648 -5.08 5,610 14.56 0.0542
2024-05-15 2024-03-31 13F ALPHABET CAP STK CL A 02079K305 32,447 -3,274 -9.17 4,897 -1.84 0.0474
2024-02-14 2023-12-31 13F ALPHABET CAP STK CL A 02079K305 35,721 7,320 25.77 4,990 34.26 0.0526
2023-11-14 2023-09-30 13F ALPHABET CAP STK CL A 02079K305 28,401 -2,530 -8.18 3,717 0.38 0.0436
2023-08-14 2023-06-30 13F ALPHABET CAP STK CL A 02079K305 30,931 -809 -2.55 3,702 12.45 0.0403
2023-05-15 2023-03-31 13F ALPHABET CAP STK CL A 02079K305 31,740 4,400 16.09 3,292 36.48 0.0380
2023-02-14 2022-12-31 13F ALPHABET CAP STK CL A 02079K305 27,340 -140 -0.51 2,412 -8.22 0.0290
2022-11-14 2022-09-30 13F ALPHABET CAP STK CL A 02079K305 27,480 26,114 1,911.71 2,628 -11.72 0.0332
2022-08-15 2022-06-30 13F ALPHABET CAP STK CL A 02079K305 1,366 38 2.86 2,977 -19.41 0.0357
2022-05-16 2022-03-31 13F ALPHABET CAP STK CL A 02079K305 1,328 33 2.55 3,694 -1.55 0.0372
2022-02-14 2021-12-31 13F ALPHABET CAP STK CL A 02079K305 1,295 17 1.33 3,752 9.80 0.0347
2021-11-15 2021-09-30 13F ALPHABET CAP STK CL A 02079K305 1,278 -184 -12.59 3,417 -4.29 0.0342
2021-08-16 2021-06-30 13F ALPHABET CAP STK CL A 02079K305 1,462 -36 -2.40 3,570 15.53 0.0353
2021-05-14 2021-03-31 13F ALPHABET CAP STK CL A 02079K305 1,498 0 0.00 3,090 17.71 0.0324
2021-02-16 2020-12-31 13F ALPHABET CAP STK CL A 02079K305 1,498 17 1.15 2,625 20.91 0.0292
2020-11-16 2020-09-30 13F ALPHABET CAP STK CL A 02079K305 1,481 17 1.16 2,171 4.58 0.0271
2020-08-14 2020-06-30 13F ALPHABET CAP STK CL A 02079K305 1,464 0 0.00 2,076 22.05 0.0271
2020-05-15 2020-03-31 13F ALPHABET CAP STK CL A 02079K305 1,464 4 0.27 1,701 -13.04 0.0248
2020-02-14 2019-12-31 13F Alphabet Inc COM 02079K305 1,460 -7 -0.48 1,956 9.21 0.0222
2019-11-14 2019-09-30 13F Alphabet Inc COM 02079K305 1,467 -43 -2.85 1,791 9.54 0.0216
2019-08-14 2019-06-30 13F Alphabet Inc COM 02079K305 1,510 80 5.59 1,635 -2.85 0.0196
2019-05-15 2019-03-31 13F Alphabet Inc COM 02079K305 1,430 2 0.14 1,683 12.80 0.0204
2019-02-14 2018-12-31 13F Alphabet Inc COM 02079K305 1,428 50 3.63 1,492 -10.28 0.0201
2018-11-14 2018-09-30 13F Alphabet Inc COM 02079K305 1,378 0 0.00 1,663 6.88 0.0194
2018-08-14 2018-06-30 13F Alphabet Inc COM 02079K305 1,378 30 2.23 1,556 11.30 0.0193
2018-05-15 2018-03-31 13F Alphabet Inc COM 02079K305 1,348 420 45.26 1,398 42.94 0.0173
2018-02-14 2017-12-31 13F Alphabet Inc Cl A COM 02079K305 928 6 0.65 978 8.91 0.0113
2017-11-14 2017-09-30 13F Alphabet Inc Cl A COM 02079K305 922 254 38.02 898 44.61 0.0108
2017-08-14 2017-06-30 13F Alphabet Inc Cl A COM 02079K305 668 0 0.00 621 9.72 0.0075
2017-05-15 2017-03-31 13F Alphabet Inc Cl A COM 02079K305 668 79 13.41 566 21.20 0.0069
2017-02-14 2016-12-31 13F Alphabet Inc Cl A COM 02079K305 589 56 10.51 467 8.86 0.0060
2016-11-14 2016-09-30 13F Alphabet Inc Cl A COM 02079K305 533 -40 -6.98 429 6.45 0.0057
2016-08-15 2016-06-30 13F Alphabet Inc Cl A COM 02079K305 573 21 3.80 403 -4.28 0.0054
2016-05-16 2016-03-31 13F Alphabet Inc Cl A COM 02079K305 552 -31 -5.32 421 -7.27 0.0060
2016-02-16 2015-12-31 13F Alphabet Inc Cl A COM 02079K305 583 0 0.00 454 22.04 0.0068
2015-11-16 2015-09-30 13F Alphabet Inc Cl A COM 02079K305 583 90 18.26 372 39.85 0.0058
2015-08-14 2015-06-30 13F Google Inc Cl A COM 38259P508 493 11 2.28 266 -0.37 0.0038
2015-05-15 2015-03-31 13F Google Inc Cl A COM 38259P508 482 -46 -8.71 267 -4.64 0.0037
2015-02-17 2014-12-31 13F Google Inc Cl A COM 38259P508 528 -90 -14.56 280 -23.08 0.0039
2014-11-14 2014-09-30 13F Google Inc Cl A COM 38259P508 618 91 17.27 364 18.18 0.0053
2014-08-14 2014-06-30 13F Google Inc Cl A COM 38259P508 527 -33 -5.89 308 -50.64 0.0044
2014-05-15 2014-03-31 13F Google Inc Cl A COM 38259P508 560 84 17.65 624 17.07 0.0092
2014-02-14 2013-12-31 13F Google COM 38259P508 476 0 0.00 533 27.82 0.0082
2013-11-14 2013-09-30 13F Google COM 38259P508 476 67 16.38 417 15.83 0.0072
2013-08-14 2013-06-30 13F Google COM 38259P508 409 409 360 0.0069
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.