AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership12,162,966 shares
Latest Disclosed Value $ 352,604,638
Rhumbline Advisers reports 2.86% decrease in ownership of T / AT&T Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 12,162,966 shares of AT&T Inc. (MX:T) valued at $352,604,638 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,521,117 shares of AT&T Inc.. This represents a change in shares of -2.86% 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)
2026-05-12 2026-03-31 13F AT&T INC COM COM 00206R102 12,162,966 -358,151 -2.86 352,605 13.37 0.3016
2026-02-13 2025-12-31 13F AT&T INC COM COM 00206R102 12,521,117 -289,755 -2.26 311,025 -14.03 0.2514
2025-11-06 2025-09-30 13F AT&T INC COM COM 00206R102 12,810,872 49,727 0.39 361,779 -2.04 0.2906
2025-08-12 2025-06-30 13F AT&T INC COM COM 00206R102 12,761,145 -188,352 -1.45 369,308 0.85 0.3163
2025-05-29 2025-03-31 13F/A-1 AT&T INC COM COM 00206R102 12,949,497 -556,075 -4.12 366,212 19.08 0.3426
2025-04-08 2025-03-31 13F AT&T INC COM COM 00206R102 12,949,497 -556,075 366,212 0.3426
2025-05-29 2024-12-31 13F/A-1 AT&T INC COM COM 00206R102 13,505,572 -148,042 -1.08 307,522 2.38 0.2751
2025-01-30 2024-12-31 13F AT&T INC COM COM 00206R102 13,505,572 -148,042 307,522 0.2751
2024-11-12 2024-09-30 13F AT&T INC COM COM 00206R102 13,653,614 -892,954 -6.14 300,380 8.06 0.2710
2024-08-01 2024-06-30 13F AT&T INC COM COM 00206R102 14,546,568 -247,819 -1.68 277,985 6.76 0.2613
2024-05-09 2024-03-31 13F AT&T INC COM COM 00206R102 14,794,387 617,629 4.36 260,381 9.46 0.2500
2024-02-08 2023-12-31 13F AT&T INC COM COM 00206R102 14,176,758 -159,723 -1.11 237,886 10.47 0.2493
2023-11-09 2023-09-30 13F AT&T INC COM COM 00206R102 14,336,481 209,006 1.48 215,334 -4.44 0.2500
2023-08-08 2023-06-30 13F AT&T INC COM COM 00206R102 14,127,475 174,311 1.25 225,333 83,979.48 0.2524
2023-05-11 2023-03-31 13F AT&T INC COM COM 00206R102 13,953,164 -130,525 -0.93 269 -99.90 0.3314
2023-02-14 2022-12-31 13F AT&T INC COM COM 00206R102 14,083,689 375,462 2.74 259,281 23.30 0.3486
2022-11-10 2022-09-30 13F AT&T INC COM COM 00206R102 13,708,227 440,903 3.32 210,284 -24.38 0.3132
2022-08-11 2022-06-30 13F AT&T INC COM COM 00206R102 13,267,324 915,064 7.41 278,083 -4.73 0.4058
2022-05-12 2022-03-31 13F AT&T INC COM COM 00206R102 12,352,260 394,987 3.30 291,884 -0.77 0.3757
2022-02-10 2021-12-31 13F AT&T INC COM COM 00206R102 11,957,273 44,592 0.37 294,149 -8.58 0.3605
2021-11-12 2021-09-30 13F AT&T INC COM COM 00206R102 11,912,681 -1,075,462 -8.28 321,762 -13.92 0.4355
2021-08-05 2021-06-30 13F AT&T INC COM COM 00206R102 12,988,143 -562,838 -4.15 373,799 -8.87 0.4905
2021-05-06 2021-03-31 13F AT&T INC COM COM 00206R102 13,550,981 -379,200 -2.72 410,188 2.39 0.5573
2021-02-10 2020-12-31 13F AT&T INC COM COM 00206R102 13,930,181 -3,847 -0.03 400,632 0.85 0.5529
2020-11-12 2020-09-30 13F AT&T INC COM COM 00206R102 13,934,028 122,037 0.88 397,259 -4.86 0.6225
2020-08-13 2020-06-30 13F AT&T INC COM COM 00206R102 13,811,991 73,649 0.54 417,536 4.26 0.6972
2020-05-06 2020-03-31 13F AT&T INC COM COM 00206R102 13,738,342 220,055 1.63 400,473 -24.20 0.8393
2020-02-05 2019-12-31 13F AT&T INC COM COM 00206R102 13,518,287 166,945 1.25 528,295 4.57 0.8835
2019-10-23 2019-09-30 13F AT&T INC COM COM 00206R102 13,351,342 529,341 4.13 505,215 17.58 0.9232
2019-08-14 2019-06-30 13F AT&T INC COM COM 00206R102 12,822,001 14,733 0.12 429,665 6.98 0.8066
2019-05-01 2019-03-31 13F AT&T INC COM COM 00206R102 12,807,268 -98,125 -0.76 401,636 9.05 0.7778
2019-01-31 2018-12-31 13F AT&T INC COM COM 00206R102 12,905,393 113,996 0.89 368,320 -14.25 0.8015
2018-11-07 2018-09-30 13F AT&T INC COM COM 00206R102 12,791,397 -110,102 -0.85 429,535 3.69 0.8296
2018-08-06 2018-06-30 13F AT&T INC COM COM 00206R102 12,901,499 1,854,769 16.79 414,267 5.19 0.8355
2018-05-02 2018-03-31 13F AT&T INC COM COM 00206R102 11,046,730 -96,461 -0.87 393,816 -9.10 0.8225
2018-02-09 2017-12-31 13F AT&T INC COM COM 00206R102 11,143,191 282,759 2.60 433,247 1.84 0.8800
2017-11-06 2017-09-30 13F AT&T INC COM COM 00206R102 10,860,432 56,001 0.52 425,403 4.35 0.9250
2017-08-02 2017-06-30 13F AT&T INC COM COM 00206R102 10,804,431 -22,386 -0.21 407,651 -9.38 0.9305
2017-05-02 2017-03-31 13F AT&T INC COM COM 00206R102 10,826,817 312,850 2.98 449,854 0.60 1.0508
2017-01-27 2016-12-31 13F AT&T INC COM COM 00206R102 10,513,967 394,685 3.90 447,159 8.81 1.1332
2016-11-08 2016-09-30 13F AT&T INC COM COM 00206R102 10,119,282 448,161 4.63 410,944 -1.66 1.1324
2016-08-11 2016-06-30 13F AT&T INC COM COM 00206R102 9,671,121 591,725 6.52 417,889 17.50 1.2382
2016-05-02 2016-03-31 13F AT+T INC USD1. COM 00206R102 9,079,396 418,869 4.84 355,640 19.34 1.1035
2016-02-03 2015-12-31 13F AT+T INC USD1. COM 00206R102 8,660,527 11,300 0.13 298,009 5.75 0.9590
2015-11-04 2015-09-30 13F AT+T INC USD1. COM 00206R102 8,649,227 1,432,935 19.86 281,792 9.94 0.9587
2015-08-04 2015-06-30 13F AT+T INC USD1. COM 00206R102 7,216,292 -1,172,709 -13.98 256,323 -6.42 0.8170
2015-05-12 2015-03-31 13F AT+T INC USD1. COM 00206R102 8,389,001 -45,758 -0.54 273,901 -3.33 0.7901
2015-02-06 2014-12-31 13F AT+T INC USD1. COM 00206R102 8,434,759 -86,170 -1.01 283,324 -5.65 0.8231
2014-11-12 2014-09-30 13F AT+T INC USD1. COM 00206R102 8,520,929 -247,914 -2.83 300,278 -3.16 0.9020
2014-08-06 2014-06-30 13F AT+T INC USD1. COM 00206R102 8,768,843 -342,299 -3.76 310,066 -2.96 0.9100
2014-05-06 2014-03-31 13F AT+T INC USD1. COM 00206R102 9,111,142 -311,593 -3.31 319,528 -3.55 0.9478
2014-02-03 2013-12-31 13F AT+T INC USD1. COM 00206R102 9,422,735 -396,768 -4.04 331,303 -0.24 0.9773
2013-11-05 2013-09-30 13F AT+T INC USD1. COM 00206R102 9,819,503 -181,320 -1.81 332,096 -6.20 1.0290
2013-08-07 2013-06-30 13F AT+T INC USD1. COM 00206R102 10,000,823 10,000,823 354,029 1.1376
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.