AT&T Inc.
MX ˙ BMV ˙ US00206R1023
SecurityMX:T / AT&T Inc.
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership1,000,966 shares
Latest Disclosed Value $ 29,018,004
Holocene Advisors, LP reports 77.13% decrease in ownership of T / AT&T Inc.

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 1,000,966 shares of AT&T Inc. (MX:T) valued at $29,018,004 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,375,872 shares of AT&T Inc.. This represents a change in shares of -77.13% 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)
2026-05-15 2026-03-31 13F AT&T COM 00206R102 1,000,966 -3,374,906 -77.13 29,018 -73.30 0.0700
2026-02-17 2025-12-31 13F AT&T COM 00206R102 4,375,872 -2,830,896 -39.28 108,697 -46.59 0.2283
2025-11-14 2025-09-30 13F AT&T COM 00206R102 7,206,768 213,601 3.05 203,519 0.56 0.4637
2025-08-14 2025-06-30 13F AT&T COM 00206R102 6,993,167 -1,101,062 -13.60 202,382 -11.59 0.4939
2025-05-15 2025-03-31 13F AT&T COM 00206R102 8,094,229 8,094,229 228,905 0.6678
2024-11-14 2024-09-30 13F AT&T COM 00206R102 0 -3,400,305 -100.00 0 -100.00
2024-08-14 2024-06-30 13F AT&T COM 00206R102 3,400,305 3,400,305 64,980 0.2713
2024-05-15 2024-03-31 13F AT&T COM 00206R102 0 -961,342 -100.00 0 -100.00
2024-02-14 2023-12-31 13F AT&T COM 00206R102 961,342 329,027 52.04 16,131 69.85 0.0629
2023-11-14 2023-09-30 13F AT&T COM 00206R102 632,315 632,315 9,497 0.0416
2023-08-14 2023-06-30 13F AT&T COM 00206R102 0 -5,855,137 -100.00 0 -100.00
2023-05-15 2023-03-31 13F AT&T COM 00206R102 5,855,137 5,855,137 112,711 0.5541
2023-02-14 2022-12-31 13F AT&T COM 00206R102 0 -348,936 -100.00 0 -100.00
2022-11-14 2022-09-30 13F AT&T COM 00206R102 348,936 130,179 59.51 5,353 16.75 0.0342
2022-08-15 2022-06-30 13F AT&T COM 00206R102 218,757 -2,131,136 -90.69 4,585 -91.74 0.0277
2022-05-16 2022-03-31 13F AT&T COM 00206R102 2,349,893 -15,009 -0.63 55,528 -4.55 0.2894
2022-02-14 2021-12-31 13F AT&T COM 00206R102 2,364,902 2,052,629 657.32 58,177 589.79 0.3028
2021-11-15 2021-09-30 13F AT&T COM 00206R102 312,273 312,273 8,434 0.0458
2019-02-14 2018-12-31 13F AT&T COM 00206R102 0 -37,634 -100.00 0 -100.00
2018-11-14 2018-09-30 13F AT&T COM 00206R102 37,634 20,817 123.79 1,264 134.07 0.0204
2018-08-14 2018-06-30 13F AT&T COM 00206R102 16,817 16,817 540 0.0115
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.