AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership50,056,268 shares
Latest Disclosed Value $ 1,451,033,065
Dimensional Fund Advisors Lp reports 0.11% increase in ownership of T / AT&T Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 50,056,268 shares of AT&T Inc. (MX:T) valued at $1,451,033,065 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 50,001,906 shares of AT&T Inc.. This represents a change in shares of 0.11% 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)
2026-05-07 2026-03-31 13F AT&T COM 00206R102 50,056,268 54,362 0.11 1,451,033 16.83 0.0650
2026-02-12 2025-12-31 13F AT&T COM 00206R102 50,001,906 -1,386,197 -2.70 1,242,041 -14.41 0.2605
2025-11-12 2025-09-30 13F AT&T COM 00206R102 51,388,103 -5,133,061 -9.08 1,451,111 -11.26 0.3114
2025-08-12 2025-06-30 13F AT&T COM 00206R102 56,521,164 3,181,788 5.97 1,635,270 8.41 0.3786
2025-05-13 2025-03-31 13F AT&T COM 00206R102 53,339,376 1,307,009 2.51 1,508,411 27.32 0.3749
2025-02-13 2024-12-31 13F AT&T COM 00206R102 52,032,367 2,992,073 6.10 1,184,717 9.80 0.2845
2024-11-07 2024-09-30 13F AT&T COM 00206R102 49,040,294 2,623,368 5.65 1,078,975 21.66 0.2617
2024-08-09 2024-06-30 13F AT&T COM 00206R102 46,416,926 -484,039 -1.03 886,902 7.44 0.2317
2024-05-10 2024-03-31 13F AT&T COM 00206R102 46,900,965 -476,302 -1.01 825,457 3.83 0.2235
2024-02-07 2023-12-31 13F AT&T COM 00206R102 47,377,267 1,137,792 2.46 794,978 14.46 0.2321
2023-11-09 2023-09-30 13F AT&T COM 00206R102 46,239,475 -2,223,301 -4.59 694,524 -10.15 0.2278
2023-08-09 2023-06-30 13F AT&T COM 00206R102 48,462,776 -3,900,669 -7.45 773,001 -23.31 0.2464
2023-05-12 2023-03-31 13F AT&T COM 00206R102 52,363,445 388,206 0.75 1,007,938 105,332.85 0.3395
2023-02-09 2022-12-31 13F AT&T COM 00206R102 51,975,239 -1,406,961 -2.64 957 -99.88 0.2827
2022-11-10 2022-09-30 13F AT&T COM 00206R102 53,382,200 -357,368 -0.66 818,980 -27.29 0.3144
2022-08-12 2022-06-30 13F AT&T COM 00206R102 53,739,568 -241,337 -0.45 1,126,322 -11.71 0.4040
2022-05-13 2022-03-31 13F AT&T COM 00206R102 53,980,905 -648,234 -1.19 1,275,778 -5.07 0.3930
2022-02-09 2021-12-31 13F AT&T COM 00206R102 54,629,139 -2,577,715 -4.51 1,343,937 -13.03 0.4063
2021-11-12 2021-09-30 13F AT&T COM 00206R102 57,206,854 -1,258,411 -2.15 1,545,345 -8.16 0.4978
2021-08-12 2021-06-30 13F AT&T COM 00206R102 58,465,265 1,394,576 2.44 1,682,572 -2.61 0.5327
2021-05-14 2021-03-31 13F AT&T COM 00206R102 57,070,689 -670,138 -1.16 1,727,745 4.05 0.5715
2021-03-08 2020-12-31 13F/A-2 AT&T COM 00206R102 57,740,827 -2,559,119 -4.24 1,660,513 -3.40 0.5996
2021-02-11 2020-12-31 13F AT&T COM 00206R102 57,740,827 -2,559,119 1,660,513 599,689.0345
2020-11-12 2020-09-30 13F AT&T COM 00206R102 60,299,946 -4,195,075 -6.50 1,719,021 -11.82 0.7290
2020-08-13 2020-06-30 13F AT&T COM 00206R102 64,495,021 -7,347,632 -10.23 1,949,530 -6.93 0.8569
2020-05-14 2020-03-31 13F AT&T COM 00206R102 71,842,653 -7,107,038 -9.00 2,094,800 -32.10 1.0913
2020-02-14 2019-12-31 13F AT&T COM 00206R102 78,949,691 -572,624 -0.72 3,085,328 2.54 1.1244
2019-11-12 2019-09-30 13F AT&T COM 00206R102 79,522,315 1,304,026 1.67 3,008,931 14.81 1.1692
2019-08-13 2019-06-30 13F AT&T COM 00206R102 78,218,289 614,777 0.79 2,620,846 7.70 1.0176
2019-08-12 2019-03-31 13F/A-2 AT&T COM 00206R102 77,603,512 -493,169 -0.63 2,433,501 9.18 0.9692
2019-05-10 2019-03-31 13F AT&T COM 00206R102 77,603,512 -493,169 2,433,501
2019-02-26 2018-12-31 13F/A-1 AT&T COM 00206R102 78,096,681 -1,612,905 -2.02 2,228,898 -16.72 1.0097
2019-02-13 2018-12-31 13F AT&T COM 00206R102 78,096,681 -1,612,905 2,228,898
2018-11-13 2018-09-30 13F AT&T COM 00206R102 79,709,586 -2,846,619 -3.45 2,676,550 0.97 1.0188
2018-08-10 2018-06-30 13F AT&T COM 00206R102 82,556,205 11,990,755 16.99 2,650,940 5.38 1.0568
2018-05-11 2018-03-31 13F AT&T COM 00206R102 70,565,450 879,436 1.26 2,515,617 -7.16 1.0484
2018-02-12 2017-12-31 13F AT&T COM 00206R102 69,686,014 1,329,706 1.95 2,709,556 1.20 1.1232
2017-11-13 2017-09-30 13F AT&T COM 00206R102 68,356,308 3,500,299 5.40 2,677,458 9.42 1.1700
2017-08-11 2017-06-30 13F AT&T COM 00206R102 64,856,009 3,572,307 5.83 2,446,984 -3.91 1.1298
2017-05-12 2017-03-31 13F AT&T COM 00206R102 61,283,702 1,998,312 3.37 2,546,423 0.99 1.2170
2017-02-09 2016-12-31 13F AT&T COM 00206R102 59,285,390 2,770,539 4.90 2,521,483 9.86 1.2594
2016-11-10 2016-09-30 13F AT&T COM 00206R102 56,514,851 4,125,000 7.87 2,295,129 1.40 1.2405
2016-08-09 2016-06-30 13F AT&T COM 00206R102 52,389,851 275,739 0.53 2,263,512 10.88 1.3024
2016-05-13 2016-03-31 13F AT&T COM 00206R102 52,114,112 1,175,437 2.31 2,041,373 16.46 1.2219
2016-02-10 2015-12-31 13F AT&T COM 00206R102 50,938,675 -511,915 -0.99 1,752,923 4.58 1.0926
2015-11-13 2015-09-30 13F AT&T COM 00206R102 51,450,590 2,605,854 5.33 1,676,145 -3.40 1.1002
2015-08-14 2015-06-30 13F AT&T COM 00206R102 48,844,736 21,903 0.04 1,735,108 8.84 1.0625
2015-05-14 2015-03-31 13F AT&T COM 00206R102 48,822,833 269,150 0.55 1,594,130 -2.27 1.0066
2015-02-06 2014-12-31 13F AT&T COM 00206R102 48,553,683 4,977,203 11.42 1,631,126 6.22 1.0713
2014-11-13 2014-09-30 13F AT&T COM 00206R102 43,576,480 3,966,175 10.01 1,535,659 9.64 1.0881
2014-08-08 2014-06-30 13F AT&T COM 00206R102 39,610,305 3,993,101 11.21 1,400,621 12.13 0.9736
2014-05-14 2014-03-31 13F AT&T COM 00206R102 35,617,204 2,155,305 6.44 1,249,077 6.17 0.9333
2014-02-12 2013-12-31 13F AT&T COM 00206R102 33,461,899 -349,984 -1.04 1,176,535 2.89 0.9168
2013-11-13 2013-09-30 13F AT&T COM 00206R102 33,811,883 853,935 2.59 1,143,516 -2.00 0.9897
2013-08-15 2013-06-30 13F AT&T COM 00206R102 32,957,948 32,957,948 1,166,807 1.0988
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.