AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionCohen Klingenstein LLC
Latest Disclosed Ownership154,832 shares
Latest Disclosed Value $ 4,488,580
Cohen Klingenstein LLC ownership in T / AT&T Inc.

On April 15, 2026 - Cohen Klingenstein LLC filed a 13F-HR form disclosing ownership of 154,832 shares of AT&T Inc. (MX:T) valued at $4,488,580 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 154,832 shares of AT&T Inc.. This represents a change in shares of 0.00% 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)
2026-04-15 2026-03-31 13F ATT COM 00206R102 154,832 0 0.00 4,489 16.69 0.1453
2026-01-20 2025-12-31 13F ATT COM 00206R102 154,832 0 0.00 3,846 -12.03 0.1169
2025-10-16 2025-09-30 13F ATT COM 00206R102 154,832 0 0.00 4,372 -2.41 0.1370
2025-07-18 2025-06-30 13F ATT COM 00206R102 154,832 0 0.00 4,481 2.33 0.1495
2025-04-15 2025-03-31 13F ATT COM 00206R102 154,832 0 0.00 4,379 24.20 0.1586
2025-01-15 2024-12-31 13F ATT COM 00206R102 154,832 0 0.00 3,526 3.49 0.1206
2024-10-16 2024-09-30 13F ATT COM 00206R102 154,832 0 0.00 3,406 15.15 0.1187
2024-07-15 2024-06-30 13F ATT COM 00206R102 154,832 0 0.00 2,959 8.55 0.1074
2024-04-12 2024-03-31 13F ATT COM 00206R102 154,832 0 0.00 2,725 4.89 0.1014
2024-01-16 2023-12-31 13F ATT COM 00206R102 154,832 0 0.00 2,598 11.74 0.1062
2023-10-13 2023-09-30 13F ATT COM 00206R102 154,832 -6 -0.00 2,326 -5.83 0.1053
2023-07-14 2023-06-30 13F ATT COM 00206R102 154,838 0 0.00 2,470 -17.15 0.1070
2023-04-14 2023-03-31 13F ATT COM 00206R102 154,838 0 0.00 2,981 4.56 0.1400
2023-01-13 2022-12-31 13F ATT COM 00206R102 154,838 0 0.00 2,851 20.00 0.1435
2022-10-12 2022-09-30 13F ATT COM 00206R102 154,838 0 0.00 2,375 -26.81 0.1259
2022-07-15 2022-06-30 13F ATT COM 00206R102 154,838 0 0.00 3,245 -11.31 0.1627
2022-04-14 2022-03-31 13F ATT COM 00206R102 154,838 0 0.00 3,659 -3.94 0.1519
2022-01-14 2021-12-31 13F ATT COM 00206R102 154,838 -36,486 -19.07 3,809 -26.30 0.1506
2021-10-15 2021-09-30 13F ATT COM 00206R102 191,324 -27,933 -12.74 5,168 -18.10 0.2259
2021-07-16 2021-06-30 13F ATT COM 00206R102 219,257 0 0.00 6,310 -4.93 0.2713
2021-04-15 2021-03-31 13F ATT COM 00206R102 219,257 0 0.00 6,637 5.25 0.3062
2021-01-25 2020-12-31 13F/A-1 ATT COM 00206R102 219,257 -41,400 -15.88 6,306 -15.14 0.3151
2021-01-19 2020-12-31 13F ATT COM 00206R102 219,257 -41,400 6,306 314,930.2719
2020-10-19 2020-09-30 13F ATT COM 00206R102 260,657 0 0.00 7,431 -5.70 0.4187
2020-07-15 2020-06-30 13F ATT COM 00206R102 260,657 0 0.00 7,880 3.71 0.4835
2020-04-15 2020-03-31 13F ATT COM 00206R102 260,657 0 0.00 7,598 -25.41 0.5620
2020-01-15 2019-12-31 13F ATT COM 00206R102 260,657 0 0.00 10,186 3.27 0.5916
2019-10-17 2019-09-30 13F ATT COM 00206R102 260,657 100 0.04 9,863 12.97 0.6199
2019-07-15 2019-06-30 13F ATT COM 00206R102 260,557 37,773 16.95 8,731 24.96 0.6220
2019-04-16 2019-03-31 13F ATT COM 00206R102 222,784 159,946 254.54 6,987 289.68 0.4871
2019-01-18 2018-12-31 13F ATT COM 00206R102 62,838 0 0.00 1,793 -15.02 0.2709
2018-10-15 2018-09-30 13F ATT COM 00206R102 62,838 0 0.00 2,110 4.56 0.2683
2018-07-13 2018-06-30 13F ATT COM 00206R102 62,838 -303 -0.48 2,018 -10.35 0.2759
2018-04-13 2018-03-31 13F ATT COM 00206R102 63,141 3 0.00 2,251 -8.31 0.3195
2018-01-16 2017-12-31 13F ATT COM 00206R102 63,138 300 0.48 2,455 -0.24 0.3490
2017-10-17 2017-09-30 13F ATT COM 00206R102 62,838 0 0.00 2,461 3.80 0.3716
2017-07-17 2017-06-30 13F ATT COM 00206R102 62,838 0 0.00 2,371 -9.19 0.3692
2017-04-13 2017-03-31 13F ATT COM 00206R102 62,838 0 0.00 2,611 -2.32 0.4179
2017-01-17 2016-12-31 13F ATT COM 00206R102 62,838 0 0.00 2,673 4.74 0.4566
2016-10-14 2016-09-30 13F ATT COM 00206R102 62,838 0 0.00 2,552 -6.00 0.4431
2016-07-15 2016-06-30 13F ATT COM 00206R102 62,838 0 0.00 2,715 10.32 0.4992
2016-04-18 2016-03-31 13F ATT COM 00206R102 62,838 0 0.00 2,461 13.83 0.4637
2016-01-20 2015-12-31 13F ATT COM 00206R102 62,838 0 0.00 2,162 5.62 0.4029
2015-10-15 2015-09-30 13F ATT COM 00206R102 62,838 28,838 84.82 2,047 69.45 0.4036
2015-07-15 2015-06-30 13F ATT COM 00206R102 34,000 0 0.00 1,208 8.83 0.2173
2015-04-14 2015-03-31 13F ATT COM 00206R102 34,000 -31 -0.09 1,110 -2.89 0.2026
2015-01-13 2014-12-31 13F ATT COM 00206R102 34,031 0 0.00 1,143 -4.67 0.2145
2014-10-14 2014-09-30 13F ATT COM 00206R102 34,031 0 0.00 1,199 -0.33 0.2115
2014-07-15 2014-06-30 13F ATT COM 00206R102 34,031 0 0.00 1,203 0.84 0.2297
2014-04-15 2014-03-31 13F ATT COM 00206R102 34,031 0 0.00 1,193 -0.33 0.2371
2014-01-14 2013-12-31 13F ATT COM 00206R102 34,031 0 0.00 1,197 4.00 0.2378
2013-10-15 2013-09-30 13F ATT COM 00206R102 34,031 0 0.00 1,151 -4.48 0.2512
2013-07-30 2013-06-30 13F ATT COM 00206R102 34,031 34,031 1,205 0.2803
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.