AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionWinthrop Advisory Group LLC
Latest Disclosed Ownership18,891 shares
Latest Disclosed Value $ 547,649
Winthrop Advisory Group LLC reports 7.44% decrease in ownership of T / AT&T Inc.

On April 13, 2026 - Winthrop Advisory Group LLC filed a 13F-HR form disclosing ownership of 18,891 shares of AT&T Inc. (MX:T) valued at $547,649 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 21, 2026 disclosing 20,410 shares of AT&T Inc.. This represents a change in shares of -7.44% 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)
2026-04-13 2026-03-31 13F AT&T COM 00206R102 18,891 -1,519 -7.44 548 8.10 0.0398
2026-01-21 2025-12-31 13F/A-1 AT&T COM 00206R102 20,410 148 0.73 507 -11.54 0.0430
2026-01-21 2025-12-31 13F AT&T COM 00206R102 20,410 148 507 0.0430
2025-10-24 2025-09-30 13F AT&T COM 00206R102 20,262 -123 -0.60 572 -2.89 0.0501
2025-07-23 2025-06-30 13F AT&T COM 00206R102 20,385 -79 -0.39 590 1.90 0.0569
2025-04-08 2025-03-31 13F AT&T COM 00206R102 20,464 -75 -0.37 579 23.77 0.0696
2025-01-13 2024-12-31 13F AT&T COM 00206R102 20,539 21 0.10 468 3.55 0.0561
2024-10-31 2024-09-30 13F AT&T COM 00206R102 20,518 687 3.46 451 19.31 0.0558
2024-07-18 2024-06-30 13F/A-1 AT&T COM 00206R102 19,831 102 0.52 379 8.93 0.0515
2024-07-18 2024-06-30 13F AT&T COM 00206R102 19,831 102 379 0.0515
2024-04-17 2024-03-31 13F AT&T COM 00206R102 19,729 1,081 5.80 347 11.22 0.0502
2024-01-10 2023-12-31 13F AT&T COM 00206R102 18,648 7,506 67.37 313 86.83 0.0489
2023-11-03 2023-09-30 13F AT&T COM 00206R102 11,142 -2,435 -17.93 167 -22.69 0.0275
2023-08-02 2023-06-30 13F AT&T COM 00206R102 13,577 1,021 8.13 217 -10.37 0.0347
2023-08-01 2023-03-31 13F/A-1 AT&T COM 00206R102 12,556 12 0.10 242 4.78 0.0427
2023-04-17 2023-03-31 13F AT&T COM 00206R102 12,556 12 0 0.0427
2023-08-03 2022-12-31 13F/A-1 AT&T COM 00206R102 12,544 -2,131 -14.52 231 2.22 0.0438
2023-01-18 2022-12-31 13F AT&T COM 00206R102 12,544 -2,131 0 0.0438
2022-11-04 2022-09-30 13F AT&T COM 00206R102 14,675 -911 -5.84 225 -31.19 0.0482
2022-07-21 2022-06-30 13F AT&T COM 00206R102 15,586 33 0.21 327 -11.14 0.0768
2022-04-13 2022-03-31 13F AT&T COM 00206R102 15,553 3,921 33.71 368 28.67 0.0767
2022-01-12 2021-12-31 13F AT&T COM 00206R102 11,632 499 4.48 286 -4.98 0.0574
2021-10-14 2021-09-30 13F AT&T COM 00206R102 11,133 -1,234 -9.98 301 -15.45 0.0670
2021-07-14 2021-06-30 13F AT&T COM 00206R102 12,367 -8,436 -40.55 356 -43.49 0.0801
2021-04-23 2021-03-31 13F AT&T COM 00206R102 20,803 5,877 39.37 630 46.85 0.1553
2021-01-25 2020-12-31 13F AT&T COM 00206R102 14,926 3,951 36.00 429 37.06 0.1122
2020-10-20 2020-09-30 13F AT&T COM 00206R102 10,975 -802 -6.81 313 -11.08 0.0959
2020-07-17 2020-06-30 13F AT&T COM 00206R102 11,777 536 4.77 352 7.32 0.1243
2020-04-17 2020-03-31 13F AT&T COM 00206R102 11,241 -1,351 -10.73 328 -33.33 0.1311
2020-01-06 2019-12-31 13F AT&T COM 00206R102 12,592 -1,212 -8.78 492 -5.75 0.1773
2019-10-10 2019-09-30 13F AT&T COM 00206R102 13,804 1,404 11.32 522 25.48 0.2066
2019-07-17 2019-06-30 13F AT&T COM 00206R102 12,400 4,517 57.30 416 66.40 0.1741
2019-04-23 2019-03-31 13F AT&T COM 00206R102 7,883 7,883 250 0.1100
2019-01-15 2018-12-31 13F AT&T COM 00206R102 0 -5,982 -100.00 0 -100.00
2018-10-29 2018-09-30 13F AT&T COM 00206R102 5,982 -413 -6.46 201 -1.95 0.1132
2018-08-07 2018-06-30 13F AT&T COM 00206R102 6,395 -48 -0.74 205 -8.89 0.1343
2018-05-11 2018-03-31 13F AT&T COM 00206R102 6,443 149 2.37 225 -2.17 0.1583
2018-05-01 2017-12-31 13F AT&T COM 00206R102 6,294 6,294 230 0.1634
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.