AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionOssiam
Latest Disclosed Ownership214,279 shares
Latest Disclosed Value $ 6,211,948
Ossiam reports 0.88% increase in ownership of T / AT&T Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 214,279 shares of AT&T Inc. (MX:T) valued at $6,211,948 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 212,417 shares of AT&T Inc.. This represents a change in shares of 0.88% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F AT&T COM 00206R102 214,279 1,862 0.88 6,212 17.72 0.1093
2026-02-13 2025-12-31 13F AT&T COM 00206R102 212,417 36,531 20.77 5,276 6.22 0.1054
2025-11-14 2025-09-30 13F AT&T COM 00206R102 175,886 -36,186 -17.06 4,967 -19.06 0.0639
2025-08-13 2025-06-30 13F AT&T COM 00206R102 212,072 10,434 5.17 6,137 7.63 0.0690
2025-05-14 2025-03-31 13F AT&T COM 00206R102 201,638 -209,826 -50.99 5,702 -39.14 0.0796
2025-02-13 2024-12-31 13F AT&T COM 00206R102 411,464 166,635 68.06 9,369 73.95 0.1617
2024-11-13 2024-09-30 13F AT&T COM 00206R102 244,829 16,250 7.11 5,386 23.31 0.1041
2024-08-13 2024-06-30 13F AT&T COM 00206R102 228,579 -420,587 -64.79 4,368 -61.77 0.0828
2024-05-13 2024-03-31 13F AT&T COM 00206R102 649,166 -158,228 -19.60 11,425 -15.67 0.2001
2024-02-13 2023-12-31 13F AT&T COM 00206R102 807,394 316,752 64.56 13,548 83.85 0.2182
2023-11-14 2023-09-30 13F AT&T COM 00206R102 490,642 382,004 351.63 7,369 325.46 0.1302
2023-08-11 2023-06-30 13F AT&T COM 00206R102 108,638 -151,404 -58.22 1,733 -65.39 0.0311
2023-05-12 2023-03-31 13F AT&T COM 00206R102 260,042 37,697 16.95 5,006 22.28 0.1040
2023-02-13 2022-12-31 13F AT&T COM 00206R102 222,345 15,192 7.33 4,093 28.79 0.1061
2022-11-14 2022-09-30 13F AT&T COM 00206R102 207,153 116,842 129.38 3,178 67.88 0.0920
2022-08-12 2022-06-30 13F AT&T COM 00206R102 90,311 81,212 892.54 1,893 780.47 0.0570
2022-05-13 2022-03-31 13F AT&T COM 00206R102 9,099 -990,407 -99.09 215 -99.13 0.0056
2022-02-14 2021-12-31 13F AT&T COM 00206R102 999,506 463,712 86.55 24,588 69.90 0.6442
2021-11-12 2021-09-30 13F AT&T COM 00206R102 535,794 89,895 20.16 14,472 15.71 0.4096
2021-08-13 2021-06-30 13F AT&T COM 00206R102 445,899 354,028 385.35 12,507 349.73 0.3394
2021-05-17 2021-03-31 13F AT&T COM 00206R102 91,871 -247,126 -72.90 2,781 -71.48 0.0866
2021-02-12 2020-12-31 13F AT&T COM 00206R102 338,997 217,203 178.34 9,750 180.82 0.3402
2020-11-12 2020-09-30 13F AT&T COM 00206R102 121,794 -56,670 -31.75 3,472 -35.64 0.1453
2020-08-13 2020-06-30 13F AT&T COM 00206R102 178,464 21,000 13.34 5,395 17.54 0.3449
2020-05-14 2020-03-31 13F AT&T COM 00206R102 157,464 -1,102,083 -87.50 4,590 -90.68 0.3124
2020-02-14 2019-12-31 13F AT&T COM 00206R102 1,259,547 955,118 313.74 49,223 327.28 3.7531
2019-11-13 2019-09-30 13F AT&T COM 00206R102 304,429 125,237 69.89 11,520 91.84 0.8034
2019-08-13 2019-06-30 13F AT&T COM 00206R102 179,192 93,301 108.63 6,005 122.90 0.4674
2019-05-15 2019-03-31 13F AT&T COM 00206R102 85,891 37,187 76.35 2,694 93.81 0.2223
2019-02-14 2018-12-31 13F AT&T COM 00206R102 48,704 48,704 1,390 0.2090
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.