Avidia Bancorp, Inc. (AVBC) stock intrinsic value fair value estimate & owner earnings analysis

Avidia Bancorp is the holding company for Avidia Bank, a Massachusetts savings bank formed in 2007 from Hudson Savings Bank and The Westborough Savings Bank (both chartered 1869). It runs ten offices in western Middlesex and eastern Worcester counties, lending mainly on homes, commercial real estate and business loans (about $2.26 billion of loans), and since 2000 has acted as a sponsor bank for payment processors, card-issuing programs and ACH originators nationwide. That payments business moved $62.2 billion in 2025 and supplied $352.8 million of low-cost deposits, up from $231.7 million a year earlier. In July 2025 the bank converted from mutual to stock form, issuing 19.2 million shares at $10 and lifting shareholders' equity from $194 million to $379 million ($390 million at June 30, 2026, about $18.80 of tangible equity per outstanding share). Earnings level. Because this is a lender, we treat credit losses as a real operating cost rather than adding them back. On that basis the business earned about $11.4 million of owner earnings in 2024 and only about $1.6 million in 2025. The 2025 figure was hit by a $19.2 million charge-off on a single $25.0 million land loan made in March 2023 (the bank has since stopped making that type of high-volatility land loan), a one-time $10 million gift of stock and cash to the new Avidia Bank Charitable Foundation (left out as a one-time conversion cost), and about $1.1 million to end an old incentive plan. Neither year describes today's business: 2024 had half today's capital and more expensive borrowings, and 2025 carries the one-off loss. The business as it now exists is the post-conversion bank, which earned $13.2 million in the first half of 2026 ($0.71 per share) with credit costs of about $2.0 million, net interest income of $47.9 million against $39.8 million a year earlier, and Federal Home Loan Bank borrowings cut from $260 million to $160 million. We use a normalized level of about $22 million a year (about $1.18 per share): the first-half run rate of roughly $26 million, less a normal credit-loss charge (about 0.2% of loans a year rather than this year's unusually low figure) and allowance for share-based pay once an equity plan is adopted. Owner-earnings growth in the last completed year was sharply negative because of the land loan; we assume no growth in year 1 of the base case from the normalized level, so the base case does not assume any deceleration reversing. Base case (about $19.75 per share). Earnings hold near $22 million a year with no growth credited. Loan growth and further payments-deposit growth are plausible but are not contracted, so they are left out. The earnings on the conversion capital and the cheaper funding from repaying borrowings are already in the run rate. As a bank, its borrowings are its raw material and are already paid for in these earnings, so no debt is subtracted; the $28 million of 2022 subordinated notes at the holding company are small against $390 million of equity. Bear case (about $12.25 per share). Two named risks hit together. First, margin pressure and the loss of some payments deposits (sponsor-bank relationships face heavy regulatory scrutiny industry-wide, and the business depends on nine independent sales organizations and a handful of program managers) cut earnings to about $17 million for two years. Second, a credit cycle of the kind New England commercial real estate and construction lenders went through in 2008-2010 and 1990-1991: cumulative losses around 3% of loans (about $68 million) spread over three years, which, net of tax and normal provisions, leaves earnings near $4-5 million a year for three years before recovering to about $15 million, below today's level because some of the low-cost payments deposits do not come back. The bank's 2025 land-loan loss and the rise in criticized loans to 4.5% of loans show its underwriting is capable of single large misses. With equity near 14% of assets, this cycle is absorbed without issuing new shares at depressed prices, which is why the bear case is not lower. The bear value sits below tangible equity per share because a bank earning mid-single-digit returns on its capital in a downturn is not worth more than that capital. Bull case (about $27.50 per share). Earnings of about $25 million (the first-half run rate with credit costs staying low) growing about 3% a year as the bank keeps doing what it has demonstrably done: payments deposits grew $121 million in 2025, and the conversion capital supports loan growth and, once permitted, share buybacks. Growth is held to that modest rate because the bank has only a short record as a public company. Margin-of-safety price. We are only moderately confident in the earnings level: it rests on two clean quarters after the conversion, a single loan cost more than a full year's earnings in 2025, and the payments business that supplies the cheapest deposits depends on a small number of partners and on regulators' continued tolerance of sponsor banking. The worst plausible outcome is a regional real estate downturn combined with a regulatory action against the payments program that forces the bank to drop partners and replace about $350 million of low-cost deposits with expensive funding; the bank's large capital cushion means it would survive this, but earnings could fall to the low teens of millions for several years. If we are wrong about the normal credit cost and the durability of the payments deposits, the shares are worth roughly $12-14. The bank pays $0.05 a quarter, so most of any return has to come from the business compounding its book value at around 6% a year and from the price moving toward the value of that equity. The margin-of-safety price is $10.00, about half of tangible equity, against about $1.18 a share of normalized earnings (close to 12% of that price), with capital that survives the bear case; from that price a 20% annual return is implied if the price moves toward the bear-case value within about two years, or toward tangible equity over three to four. Above that level, the return depends on the base case playing out, which is not secure enough given the short record. Our previous figures were prepared on a different basis and are not comparable.