M&T Bank Corporation
MX ˙ BMV ˙ US55261F1049
SecurityMX:MTB / M&T Bank Corporation
InstitutionGrandfield & Dodd, Llc
Latest Disclosed Ownership18,566 shares
Latest Disclosed Value $ 3,837,964
Grandfield & Dodd, Llc reports 2.32% decrease in ownership of MTB / M&T Bank Corporation

On May 7, 2026 - Grandfield & Dodd, Llc filed a 13F-HR form disclosing ownership of 18,566 shares of M&T Bank Corporation (MX:MTB) valued at $3,837,964 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 19,006 shares of M&T Bank Corporation. This represents a change in shares of -2.32% 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 M & T BK COM 55261F104 18,566 -440 -2.32 3,838 0.21 0.2167
2026-02-10 2025-12-31 13F M & T BK COM 55261F104 19,006 0 0.00 3,829 1.97 0.2169
2025-10-30 2025-09-30 13F M & T BK COM 55261F104 19,006 -325 -1.68 3,756 0.13 0.2131
2025-08-08 2025-06-30 13F M & T BK COM 55261F104 19,331 -125 -0.64 3,750 7.85 0.2196
2025-05-02 2025-03-31 13F M & T BK COM 55261F104 19,456 -86 -0.44 3,478 -5.36 0.2156
2025-02-06 2024-12-31 13F M & T BK COM 55261F104 19,542 -2,624 -11.84 3,674 -6.94 0.2265
2024-11-08 2024-09-30 13F M & T BK COM 55261F104 22,166 -4,736 -17.60 3,948 -3.02 0.2340
2024-08-09 2024-06-30 13F M & T BK COM 55261F104 26,902 -7,471 -21.74 4,072 -18.56 0.2578
2024-05-06 2024-03-31 13F M & T BK COM 55261F104 34,373 -16,077 -31.87 4,999 -27.71 0.3155
2024-01-31 2023-12-31 13F M & T BK COM 55261F104 50,450 -61,487 -54.93 6,916 -51.14 0.4779
2023-10-26 2023-09-30 13F M & T BK COM 55261F104 111,937 -22,204 -16.55 14,155 -14.74 1.0399
2023-08-08 2023-06-30 13F M & T BK COM 55261F104 134,141 -1,397 -1.03 16,601 2.44 1.1605
2023-04-28 2023-03-31 13F M & T BK COM 55261F104 135,538 1,601 1.20 16,206 -16.59 1.1327
2023-01-20 2022-12-31 13F M & T BK COM 55261F104 133,937 4,630 3.58 19,429 -14.79 1.4215
2022-11-04 2022-09-30 13F M & T BK COM 55261F104 129,307 3,431 2.73 22,800 13.66 1.8615
2022-08-01 2022-06-30 13F M & T BK COM 55261F104 125,876 3,456 2.82 20,060 -3.33 1.5800
2022-04-19 2022-03-31 13F M & T BK COM 55261F104 122,420 -442 -0.36 20,750 9.96 1.4082
2022-02-08 2021-12-31 13F M & T BK COM 55261F104 122,862 1,903 1.57 18,870 4.49 1.2139
2021-10-28 2021-09-30 13F M & T BK COM 55261F104 120,959 12,448 11.47 18,060 14.52 1.2606
2021-07-28 2021-06-30 13F M & T BK COM 55261F104 108,511 6,272 6.13 15,770 1.74 1.0913
2021-04-22 2021-03-31 13F M & T BK COM 55261F104 102,239 3,599 3.65 15,500 23.41 1.1588
2021-01-29 2020-12-31 13F M & T BK COM 55261F104 98,640 -7,283 -6.88 12,560 28.82 0.9855
2020-11-03 2020-09-30 13F M & T BK COM 55261F104 105,923 -5,410 -4.86 9,750 -15.80 0.8782
2020-07-24 2020-06-30 13F M & T BK COM 55261F104 111,333 8,189 7.94 11,580 8.55 1.1204
2020-05-14 2020-03-31 13F M & T BK COM 55261F104 103,144 3,090 3.09 10,668 -37.19 1.2578
2020-02-07 2019-12-31 13F M & T BK COM 55261F104 100,054 1,661 1.69 16,984 9.27 1.5472
2019-10-30 2019-09-30 13F M & T BK COM 55261F104 98,393 2,097 2.18 15,543 -5.09 1.5293
2019-07-29 2019-06-30 13F M & T BK COM 55261F104 96,296 3,593 3.88 16,377 12.51 1.6188
2019-04-26 2019-03-31 13F M & T BK COM 55261F104 92,703 960 1.05 14,556 10.85 1.5159
2019-02-12 2018-12-31 13F M & T BK COM 55261F104 91,743 1,630 1.81 13,131 -11.44 1.5540
2018-11-02 2018-09-30 13F M & T BK COM 55261F104 90,113 2,495 2.85 14,827 -0.54 1.5280
2018-07-27 2018-06-30 13F M & T BK COM 55261F104 87,618 1,093 1.26 14,908 -6.54 1.6379
2018-05-04 2018-03-31 13F/A-1 M & T BK COM 55261F104 86,525 1,372 1.61 15,952 9.56 1.7794
2018-05-04 2018-03-31 13F M & T BK COM 55261F104 86,525 1,372 15,952
2018-02-05 2017-12-31 13F M & T BK COM 55261F104 85,153 5,570 7.00 14,560 13.61 1.5543
2017-11-03 2017-09-30 13F M & T BK COM 55261F104 79,583 27,294 52.20 12,816 51.35 1.4388
2017-07-27 2017-06-30 13F M & T BK COM 55261F104 52,289 26,543 103.10 8,468 112.55 1.0006
2017-04-28 2017-03-31 13F M & T BK COM 55261F104 25,746 23,213 916.42 3,984 906.06 0.4921
2017-02-02 2016-12-31 13F M & T BK COM 55261F104 2,533 2,533 396 0.0513
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.