M&T Bank Corporation (MTB)

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 1,094 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• M&T files its own Form 13F, and it is client wealth/trust assets, excluded per the brief. For the quarter ended 30 June 2026 (filed 4 Aug 2026, accession 0001193125-26-331637, CIK 0000036270), M&T's filing is a '13F COMBINATION REPORT' whose cover page names 7 other included managers: Manufacturers & Traders Trust Company, Wilmington Trust Investment Advisors, Inc., Wilmington Trust National Association, Wilmington Trust Company, Wilmington Funds Management Corp, Wilmington Trust Investment Management, LLC, and Wilmington Trust Asset Management, LLC. Its summary page reports tableEntryTotal 14,601 positions with tableValueTotal $34,108,298,372. This is M&T's Institutional Services & Wealth Management book (trust, brokerage, investment management services for clients), not the Bancorp's own balance-sheet strategic stakes, so no line item from this filing appears in holdings, consistent with the treatment of fifth-third.json and other banks' own 13Fs in this project.
• The securities investment portfolio is excluded as a category, not sized as holdings. Q2 2026 10-Q Note 3 references $851 million of 'cost method equity securities' within the investment securities portfolio at 30 Jun 2026 (up from $736 million at 31 Dec 2025 per the FY2025 10-K), with no per-holding breakdown disclosed by issuer. The MD&A separately states 'the Company routinely adjusts its holdings of capital stock of the FHLB of New York and the FRB of New York based on amounts of outstanding borrowings and available lines of credit with those entities,' confirming FHLB/FRB stock sits inside this cost-method bucket. No named investee is disclosed, and no dollar breakout of the FHLB or FRB components specifically was found in the 10-Q or 10-K text (unlike Fifth Third's filings, which itemize FHLB/FRB/DTCC amounts separately); the full $851 million bucket is excluded as an unnamed combined balance per the project's 'never assign a combined balance to one investee' rule.
• Federal Home Loan Bank and Federal Reserve Bank stock are excluded and are not equity stakes. M&T's 10-K and 10-Q confirm it holds capital stock of the FHLB of New York and the FRB of New York, adjusted up or down with its own borrowings and available credit lines from those entities. These are non-transferable membership holdings carried at cost and redeemable at par, not market equity investments, and are excluded from holdings per the brief regardless of the fact that no separate dollar figure for them was disclosed (see the equity-securities note above); their absence from holdings is a sourced exclusion, not a gap.
• M&T does not currently hold Visa Class B shares, and has not for well over a decade. Both the Q2 2026 10-Q and the FY2025 10-K were searched for 'Visa' and 'Visa Class B' with zero hits. EDGAR full-text search across all of M&T's filings shows the last mention of 'Visa Class B' was in its FY2015 10-K (filed 19 Feb 2016), which states: 'During 2013, the Company sold its holdings of Visa Class B shares for a gain of $89,545,000 and its holdings of MasterCard Class B shares for a gain of $13,208,000... sold as a result of favorable market conditions and to enhance the Company's capital and liquidity.' No current swap or derivative tied to a former Visa Class B position (of the kind Fifth Third and Huntington carry) was found in the current filings either. No Visa holding or derivative appears in holdings.
• M&T is reported to hold a minority interest in an investment-management-adjacent firm; the only minority interest actually disclosed in current filings is Bayview Lending Group (BLG), a privately-held commercial mortgage company, at 20%, recorded in holdings. Both the Q2 2026 10-Q and FY2025 10-K were searched for 'equity method', 'unconsolidated', 'joint venture', 'non-marketable' and 'minority interest'; 'equity method' returns only a general accounting-policy sentence (investments in subsidiaries reported under the equity method, no third-party investee named) and 'joint venture' returns zero hits in the Q2 2026 10-Q. 'Minority interest' returns exactly one substantive hit: the BLG relationship. BLG is described as a commercial mortgage company, not an asset/investment manager, so this may not be the exact entity the brief's hint anticipated; no separate investment-management-firm minority stake was found despite the extra search pass, and none is asserted here beyond BLG.
• Private-equity-fund and low-income-housing/tax-credit limited-partner interests are excluded as financing structures, not sized as holdings. Q2 2026 10-Q text confirms M&T invests as a limited partner in partnerships for renewable-energy and other federal tax credits, and separately in registered money-market funds as investment advisor (not an equity stake). No individual fund, portfolio company or single total carrying value is named for these vehicles, consistent with the brief's guidance that tax-credit and LIHTC vehicles are financing structures rather than operating-company stakes.
• Holdings would otherwise be empty; BLG is the one sourced exception. Search terms 'equity method', 'unconsolidated', 'joint venture', 'equity securities', 'non-marketable equity', 'other investments', 'tax credit' and 'Bayview' were each run against the Q2 2026 10-Q and FY2025 10-K per the brief's instruction; only Bayview/BLG produced a named, sized minority stake.
• No merger or large share issuance occurred in the observed window; the falling share count reflects buybacks, not a merger. The SEC XBRL dei:EntityCommonStockSharesOutstanding series shows a smooth decline from 166,624,291 (10-K, 16 Feb 2024) to 164,333,454 (10-K, 14 Feb 2025) to 149,000,252 (10-K, 13 Feb 2026) to 144,416,262 (10-Q, 31 Jul 2026), with no single-quarter jump of the kind Fifth Third (Comerica) or Huntington (two 2026 mergers) show. M&T's stock-for-stock acquisition of People's United Financial closed in April 2022, well before every source used in this file (2024 to 2026), so all register rows sit on one consistent post-2022 share basis; that merger is mentioned in the 2026 proxy only as the reason director John P. Barnes (former People's United CEO) joined M&T's board, not as a basis change relevant here.
• The proxy's own 5%-holder table (as of 13 Feb 2026, based on the filers' own Schedule 13G/13D calculations) lists Vanguard at 19,433,884 shares (13.04%), FMR LLC at 13,300,901.57 shares (8.93%), BlackRock at 13,109,596 shares (8.80%) and Wellington Management Group LLP at 9,894,065 shares (6.64%). These are all sourced to stale Schedule 13G filings (Vanguard's and BlackRock's both cite Dec 2023 positions). Per the brief, the fresher Q2 2026 Form 13F-HR figures are used in the register instead; both figures are given in each row's method_note.
• Capital Group (all three US 13F registrants) holds zero MTB. Capital World Investors (CIK 0001422849), Capital International Investors (CIK 0001562230) and Capital Research Global Investors (CIK 0001422848) were each checked directly against their Q2 2026 13F-HR info tables for CUSIP 55261F104: zero matching rows in all three. No Capital Group row appears in this register.
• Self-gate check, computed with the exact chart formula in the research brief and chunk prompt: 11 register rows. René F. Jones (150,069 shares) rolls up into the 23-person officers/directors group, which is counted at its residual of 666,071 minus 150,069 = 516,002 to avoid double counting the CEO. Summing the 9 institutional rows at full value (18,227,710 + 12,846,003 + 12,417,262 + 9,801,881 + 7,112,644 + 4,348,008 + 4,045,990 + 1,985,145 + 204,179) plus Jones at full value (150,069) plus the group's residual (516,002) gives 71,654,893 shares against 144,416,262 shares outstanding, or 49.62%. This sits within the brief's stated bounds (below 15% or above 55% signals a likely error); it is on the high side of the 25-45% range the chunk prompt describes as typical, consistent with M&T's own Q1 2026 13F-based register file (data/registers/MTB.json), whose top 10 institutional holders alone summed to roughly 58.6% of the smaller Q1 2026 share count, i.e. the same high institutional concentration shows up independently in both quarters.