Byline Bancorp, Inc. (BY) Stock Analysis and Metrics

Byline Bancorp

NYSE: BY

$38.58 ▲ +0.94 (+2.50%)

At close: Jul 24, 2026 · 3:59 PM UTC

Financial Ratios

Market Cap1.74 Bn

P/E9.99

P/S7.50

Div. Yield0.01

Total Debt (Qtr)79.77 Mn

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About

Byline Bancorp, Inc. is a bank holding company headquartered in Chicago, Illinois that conducts all of its business activities through its subsidiary, Byline Bank, a full service commercial bank, and Byline Bank’s subsidiaries. As of December 31, 2025 the company reported consolidated total assets of $9.7 billion, total gross loans and leases outstanding of $7.5 billion, total deposits of $7.6 billion, and total stockholders’ equity of $1.3 billion. Byline Bancorp provides a broad range of banking products and services to small and medium sized businesses, commercial real estate investors, financial sponsors, and consumers who generally live or work near its branch locations. In addition to traditional commercial banking the company offers small ticket equipment leasing through its subsidiary Byline Financial Group, trust and wealth management services, and participates in U. S. government guaranteed lending programs such as SBA and USDA loans.

The company generates revenue primarily from interest income on its loan and lease portfolio which includes commercial and industrial loans, commercial real estate loans, sponsor finance loans, loan syndications, small ticket equipment leases, and U. S. government guaranteed loans. Interest income is supplemented by fee income from deposit accounts, treasury management services, trust and wealth management activities, and gains on the sale of the guaranteed portion of SBA loans in the secondary market accompanied by recurring servicing revenue. Additional revenue streams arise from deposit related fees, ATM and debit card services, and income from leasing activities conducted by Byline Financial Group. As of December 31, 2025 the commercial and industrial loan portfolio totaled $3.3 billion, the commercial real estate loan portfolio totaled $1.4 billion, sponsor finance loans amounted to $805.9 million, loan syndications totaled $183.8 million, and SBA and USDA loans totaled $533.0 million of which $97.8 million were guaranteed by the U. S. government. The small ticket equipment leasing portfolio stood at $752.3 million and assets under administration for trust and wealth management were $823.2 million.

The company operates through the following segments.

• Byline Bank: This segment delivers a full suite of commercial banking products and services including commercial and industrial loans, commercial real estate loans, sponsor finance loans, loan syndications, deposit and treasury management services, small business capital through U. S. government guaranteed loans, community banking deposit products, small ticket equipment leasing via Byline Financial Group, and trust and wealth management solutions. The segment also engages in the origination and servicing of U. S. government guaranteed loans, retaining the non‑guaranteed portion and servicing rights while selling the guaranteed portion into the secondary market to generate gain on sale income and recurring servicing revenue.

Byline Bancorp holds a competitive position as a community focused commercial bank in the Chicago metropolitan area where it faces competition from larger national banks, regional banks, internet only banks, credit unions, FinTech firms, and specialized trust and wealth management providers. Its advantages stem from a deep local branch network of 44 locations, longstanding relationships with small and medium sized businesses, expertise in SBA lending that ranked it as the top SBA 7(a) lender in Illinois, a diversified loan portfolio across multiple industries, and a strong base of low cost core deposits that represented 87.0% of total deposits as of December 31, 2025. The company’s emphasis on personalized service, experienced lending teams hired from larger banks, disciplined risk management, and a focus on organic growth and strategic acquisitions further differentiate it from peers. As of December 31, 2025 the company employed 1,027 individuals across its Chicagoland and greater Milwaukee Wisconsin areas.

The company serves small and medium sized businesses, commercial real estate investors, financial sponsors, and individual consumers residing near its branches. Its equipment leasing business serves vendors and end users in manufacturing, small equipment construction, wholesalers, and healthcare sectors. Trust and wealth management clients include foundations, endowments, and high net worth individuals. The company’s deposit base consists primarily of core deposits which are defined as all deposits except time deposits exceeding $100,000 and represented 87.0% of total deposits as of December 31, 2025. While the filing does not disclose specific customer names the breadth of its product lines indicates a diverse customer base spanning various industries and wealth levels.

Investment Thesis

▲ Bull case

Byline Bancorp is positioned for accelerated balance sheet expansion beyond $10 billion as macroeconomic headwinds ease, with management explicitly stating they are not artificially constraining growth and expect to cross the $10 billion threshold imminently. This transition is critical because surpassing this asset level unlocks economies of scale in technology, compliance, and treasury operations, reducing per-unit operating costs while enhancing pricing power in competitive lending markets. The bank’s current efficiency ratio of 49.8%—already among the lowest since going public—suggests significant operational leverage is embedded in the business model, meaning each incremental dollar of assets could generate disproportionately higher pretax, pre-provision income as fixed costs are spread over a larger base. Furthermore, the durable pipeline in commercial banking and leasing, described as "solid" despite macro uncertainty, indicates core relationship-driven demand remains resilient, positioning the bank to capture market share from less agile competitors when real estate lending rebounds with moderating long-term rates.
The Durbin Amendment’s anticipated $3.5 million to $4 million annualized revenue impact—equivalent to roughly four basis points to ROA—is being substantially overstated by the market as a near-term earnings headwind, when in reality it does not take effect until July 1, 2027, providing a multi-year window for proactive offsetting strategies. Management’s deliberate focus on growing fee income through swap activities, commercial payments, and lease asset monetization—evidenced by their Q1 guidance of $14 million to $15 million for noninterest income in Q2 despite quarterly volatility—demonstrates a clear path to mitigate this impact well before implementation. Additionally, the bank’s tangible book value per share growth of 14% year over year and 1% quarter over quarter reflects robust internal capital generation, enabling accelerated share repurchases (already at 40% of net income) without compromising capital ratios, which remain materially above requirements (CET1 at 12.5%, total capital at 15.5%). This dual capacity to grow organically while returning capital creates a compounding effect that the market is underpricing, particularly as the bank prepares to redeploy excess liquidity from its growing securities portfolio into higher-yielding loans as real estate activity picks up.
Byline’s SBA 7(a) lending dominance—ranked number one in Illinois for the sixteenth consecutive year—represents a structurally advantaged, low-risk growth vector that is underappreciated in current valuations, especially as federal small business support programs remain politically resilient regardless of broader economic cycles. This franchise generates consistently high-quality origination with government guarantees, reducing credit risk while delivering attractive risk-adjusted returns, and its resilience was underscored by management’s note that payoff activity in the quarter was largely driven by planned runoff of acquired participations, not weak demand. When stripped of this runoff, underlying loan growth would have been approximately 4% for the quarter, revealing healthy core momentum masked by balance sheet optimization. The bank’s discipline in managing deposit costs—improving by six basis points sequentially to 1.91% through mix shifts rather than relying solely on rate declines—shows sustainable funding advantage that will persist even if monetary policy stabilizes, allowing net interest margins to expand as higher-yielding loans (originated at 6.75%-6.80% coupons) replace lower-yielding payoffs (at 4.50% coupons). This dynamic, combined with stable net interest margins expanding 26 basis points year over year, signals improving earnings quality that is not yet reflected in current multiples.

Byline Bancorp is positioned for accelerated balance sheet expansion beyond $10 billion as macroeconomic headwinds ease, with management explicitly stating they are not artificially constraining growth and expect to cross the $10 billion threshold imminently. This transition is critical because surpassing this asset level unlocks economies of scale in technology, compliance, and treasury operations, reducing per-unit operating costs while enhancing pricing power in competitive lending markets. The bank’s current efficiency ratio of 49.8%—already among the lowest since going public—suggests significant operational leverage is embedded in the business model, meaning each incremental dollar of assets could generate disproportionately higher pretax, pre-provision income as fixed costs are spread over a larger base. Furthermore, the durable pipeline in commercial banking and leasing, described as "solid" despite macro uncertainty, indicates core relationship-driven demand remains resilient, positioning the bank to capture market share from less agile competitors when real estate lending rebounds with moderating long-term rates.
The Durbin Amendment’s anticipated $3.5 million to $4 million annualized revenue impact—equivalent to roughly four basis points to ROA—is being substantially overstated by the market as a near-term earnings headwind, when in reality it does not take effect until July 1, 2027, providing a multi-year window for proactive offsetting strategies. Management’s deliberate focus on growing fee income through swap activities, commercial payments, and lease asset monetization—evidenced by their Q1 guidance of $14 million to $15 million for noninterest income in Q2 despite quarterly volatility—demonstrates a clear path to mitigate this impact well before implementation. Additionally, the bank’s tangible book value per share growth of 14% year over year and 1% quarter over quarter reflects robust internal capital generation, enabling accelerated share repurchases (already at 40% of net income) without compromising capital ratios, which remain materially above requirements (CET1 at 12.5%, total capital at 15.5%). This dual capacity to grow organically while returning capital creates a compounding effect that the market is underpricing, particularly as the bank prepares to redeploy excess liquidity from its growing securities portfolio into higher-yielding loans as real estate activity picks up.
Byline’s SBA 7(a) lending dominance—ranked number one in Illinois for the sixteenth consecutive year—represents a structurally advantaged, low-risk growth vector that is underappreciated in current valuations, especially as federal small business support programs remain politically resilient regardless of broader economic cycles. This franchise generates consistently high-quality origination with government guarantees, reducing credit risk while delivering attractive risk-adjusted returns, and its resilience was underscored by management’s note that payoff activity in the quarter was largely driven by planned runoff of acquired participations, not weak demand. When stripped of this runoff, underlying loan growth would have been approximately 4% for the quarter, revealing healthy core momentum masked by balance sheet optimization. The bank’s discipline in managing deposit costs—improving by six basis points sequentially to 1.91% through mix shifts rather than relying solely on rate declines—shows sustainable funding advantage that will persist even if monetary policy stabilizes, allowing net interest margins to expand as higher-yielding loans (originated at 6.75%-6.80% coupons) replace lower-yielding payoffs (at 4.50% coupons). This dynamic, combined with stable net interest margins expanding 26 basis points year over year, signals improving earnings quality that is not yet reflected in current multiples.

▼ Bear case

Byline Bancorp’s loan growth remains fundamentally constrained by persistent runoff from legacy acquired portfolios and participations, which management acknowledged offset $320 million in payoffs against only $241 million in new originations, resulting in a modestly lower linked-quarter loan balance despite describing pipeline as "solid." This structural drag—characterized as "planned runoff" from books acquired over years—suggests the bank’s ability to grow its core loan book organically is weaker than implied, with true growth potential likely below the mid-single-digit guidance when excluding the artificial boost from portfolio reshuffling. The reliance on steadily rolling off lower-yielding, acquired assets (paying ~4.50% coupons) to originate new loans at 6.75%-6.80% creates a temporary margin tailwind that will dissipate as this runoff exhausts, leaving the bank dependent on genuine new demand in a competitive Chicago market where real estate lending—identified as the most rate-sensitive segment—faces ongoing uncertainty from long-term rate volatility and geopolitical tensions, which management conceded could suppress volumes later in the year.
The bank’s apparent strength in noninterest income is misleadingly buoyed by volatile fair value adjustments, with Q1 noninterest income declining $3.2 million linked quarter due to a $755 thousand negative mark on loan servicing assets and a $1.3 million drop in equity securities—factors management excluded when guiding to $14 million to $15 million for Q2. This reliance on excluding non-recurring items to present stable fee income trends masks underlying weakness in core franchise revenue streams, particularly as swap income from the back-to-back program and lease asset sales remain inconsistent and dependent on market timing rather than scalable, repeatable business models. Furthermore, the Durbin Amendment impact, while quantified as modest ($3.5–$4 million annually), represents a tangible and irreversible headwind that will begin eroding revenue in mid-2027 with no offsetting strategy detailed beyond vague hopes of growth in swap and commercial payments—business lines that have yet to demonstrate consistent, predictable contribution to earnings, increasing the risk that the impact will exceed estimates if these initiatives underperform.
Byline’s capital strength, while seemingly robust with a CET1 ratio of 12.5% and tangible book value per share up 14% year over year, may be overstated as a buffer against risk, given that the tangible common equity (TCE) ratio stands at only 11.1%—a level that provides limited resilience in a severe downturn, especially considering the bank’s concentration in commercial real estate and commercial lending, which are inherently cyclical and sensitive to Chicago-specific economic conditions. The emphasis on returning 40% of net income via share repurchases and dividends, while attractive to income-focused investors, risks prioritizing short-term shareholder returns over necessary reinvestment in technology, talent, and market expansion, particularly as the bank aims to scale beyond $10 billion—a threshold that typically demands significant upfront investment in infrastructure and compliance. Management’s description of M&A conversations as "pretty healthy" but hindered by seller hesitancy due to macro and geopolitical factors suggests external growth options are constrained, placing greater burden on organic initiatives that have yet to prove capable of sustaining both asset growth and margin expansion without reliance on balance sheet repositioning or fair value volatility.

Byline Bancorp’s loan growth remains fundamentally constrained by persistent runoff from legacy acquired portfolios and participations, which management acknowledged offset $320 million in payoffs against only $241 million in new originations, resulting in a modestly lower linked-quarter loan balance despite describing pipeline as "solid." This structural drag—characterized as "planned runoff" from books acquired over years—suggests the bank’s ability to grow its core loan book organically is weaker than implied, with true growth potential likely below the mid-single-digit guidance when excluding the artificial boost from portfolio reshuffling. The reliance on steadily rolling off lower-yielding, acquired assets (paying ~4.50% coupons) to originate new loans at 6.75%-6.80% creates a temporary margin tailwind that will dissipate as this runoff exhausts, leaving the bank dependent on genuine new demand in a competitive Chicago market where real estate lending—identified as the most rate-sensitive segment—faces ongoing uncertainty from long-term rate volatility and geopolitical tensions, which management conceded could suppress volumes later in the year.
The bank’s apparent strength in noninterest income is misleadingly buoyed by volatile fair value adjustments, with Q1 noninterest income declining $3.2 million linked quarter due to a $755 thousand negative mark on loan servicing assets and a $1.3 million drop in equity securities—factors management excluded when guiding to $14 million to $15 million for Q2. This reliance on excluding non-recurring items to present stable fee income trends masks underlying weakness in core franchise revenue streams, particularly as swap income from the back-to-back program and lease asset sales remain inconsistent and dependent on market timing rather than scalable, repeatable business models. Furthermore, the Durbin Amendment impact, while quantified as modest ($3.5–$4 million annually), represents a tangible and irreversible headwind that will begin eroding revenue in mid-2027 with no offsetting strategy detailed beyond vague hopes of growth in swap and commercial payments—business lines that have yet to demonstrate consistent, predictable contribution to earnings, increasing the risk that the impact will exceed estimates if these initiatives underperform.
Byline’s capital strength, while seemingly robust with a CET1 ratio of 12.5% and tangible book value per share up 14% year over year, may be overstated as a buffer against risk, given that the tangible common equity (TCE) ratio stands at only 11.1%—a level that provides limited resilience in a severe downturn, especially considering the bank’s concentration in commercial real estate and commercial lending, which are inherently cyclical and sensitive to Chicago-specific economic conditions. The emphasis on returning 40% of net income via share repurchases and dividends, while attractive to income-focused investors, risks prioritizing short-term shareholder returns over necessary reinvestment in technology, talent, and market expansion, particularly as the bank aims to scale beyond $10 billion—a threshold that typically demands significant upfront investment in infrastructure and compliance. Management’s description of M&A conversations as "pretty healthy" but hindered by seller hesitancy due to macro and geopolitical factors suggests external growth options are constrained, placing greater burden on organic initiatives that have yet to prove capable of sustaining both asset growth and margin expansion without reliance on balance sheet repositioning or fair value volatility.

Peer Comparison

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1	KB	KB Financial Group Inc.	42,090.38 Bn	0.00 Bn	0.01 Mn	56.66 Bn
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3	BCH	Bank Of Chile	4,123.52 Bn	368.17 Bn	1.57 Mn	0.00 Bn
4	LYG	Lloyds Banking Group plc	360.83 Bn	0.00 Bn	0.00 Mn	42.37 Bn
5	FCAP	First Capital Inc	204.17 Bn	0.00 Bn	0.03 Mn	-
6	LARK	Landmark Bancorp Inc	187.97 Bn	0.00 Bn	0.00 Mn	0.00 Bn
7	NWG	NatWest Group plc	144.82 Bn	0.00 Bn	0.00 Mn	94.66 Bn
8	PNC	Pnc Financial Services Group, Inc.	101.80 Bn	0.00 Bn	0.00 Mn	21.42 Bn

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