How AI Search Is Recommending Business Checking Accounts: Monthly Trends

Executive Summary

Chase remained the coverage leader in September 2026 at 58.3% valid recommendation coverage, but its lead over the next brand narrowed to 4.1 points as Bank of America rose to 54.2%. The category's competitive set held steady at 10 tracked brands for a second consecutive month, with no new entrants and no brands dropping out of the qualified set. This is the first month since the July 2026 baseline where the tracked brand list was unchanged month over month.

The strongest upward mover among tracked brands was Bank of America, up 10.3 points to 54.2% from 43.9% in July 2026, a significant rise across the three-month series. Capital One Auto Finance rose 8.4 points to 11.8% from 3.4%, also significant over baseline. Bluevine, classified as a significant riser over the full series at 43.1% from 30.3%, declined 4.1 points from August's 47.2%, a pullback rather than a reversal.

The sharpest decliner this month was Wells Fargo, down 11.0 points to 32.6% from 43.6% in August 2026, a significant month-over-month drop that erased most of its August gain. Axos Bank also declined significantly, down 8.7 points to 16.7% from 25.4% in August. Chase itself fell 8.2 points from its debut month, though not a significant movement, while Citi, Mercury, and Bluevine each eased by smaller margins. The category summary is mixed: six significant risers and five significant decliners measured against the July baseline, with no watch items flagged.

Each monthly run begins with 800 prompt-surface observations (656 unique questions in September 2026, 672 in August, 664 in July) across the benchmark's defined AI/search surface universe. Of those, 800 mentioned a tracked brand or competitor in each month; 145 were relevant in September 2026 and 203 in August, with 655 and 597 filtered out as irrelevant. The public metrics use the 144 qualified observations from September 2026, 197 from August 2026, and 264 from July 2026 that survive both qualification stages.

Key Findings

Benchmark Context

The report separates the raw collection universe from the qualified analysis set. Brand-level recommendation percentages are calculated within the qualified benchmark set.

Benchmark-Level Metrics

The following benchmark-level metrics summarize how the qualified prompt mix changed between the two months.

The qualified observation count declined for a third consecutive month, from 264 in July 2026 to 197 in August to 144 in September 2026. The recommendation-shaped answer share peaked in August at 50.8% before easing to 47.9% in September, while the valid recommendation shortlist share rose to 61.8% from 58.7% in July. The August intermediate month saw the highest concentration of direct recommendation queries; September remained elevated relative to July but below August's peak.

AI Recommendation Trend

A Two-Brand Lead Cluster Has Formed at the Top of the Category

September 2026 marks the first month with a stable 10-brand competitive set. Chase leads at 58.3% valid recommendation coverage, with Bank of America close behind at 54.2%, a 4.1-point gap. Bluevine, U.S. Bank, and Wells Fargo form a mid-tier cluster between 32.6% and 43.1%, while Mercury sits at 35.4%. The remaining brands hold between 11.8% and 18.1% coverage. This is a more balanced distribution than August, when Chase's 66.5% debut created a 12.7-point gap to second place.

Across the baseline-to-current series, six brands were classified as significant risers: Bank of America, Bluevine, Capital One Auto Finance, Chase, Citi, and Mercury. Five brands were significant decliners, all falling to 0% because they no longer appear in the tracked set. The September month-over-month movements were more muted, with only Wells Fargo's 11.0-point drop and Axos Bank's 8.7-point decline crossing the significance threshold. The category-level picture in September came primarily from two sharp decliners against an otherwise stable set, not from broad repositioning across the tracked brands.

What Changed This Month

Bank of America

Bank of America rose to 54.2% valid recommendation coverage in September 2026, up 10.3 points from 43.9% in July 2026, a significant gain across the three-month series. The brand now sits 4.1 points behind leader Chase, its closest position to the top since the series began.

Bank of America's raw mention presence was effectively flat across the series, rising 1.2 points to 95.1% from 93.9%. The brand's top-three rate declined 3.9 points to 21.5%, and its rank-one rate fell a significant 7.7 points to 2.1% (3 rank-one placements). The brand's current coverage of 54.2% rests on 78 valid recommendations out of 144 qualified observations; in July it held 116 of 264.

Bank of America narrowed the gap to the leader by adding broad recommendation coverage while its placement quality weakened. The brand appears in more qualifying answers but at less prominent positions, a pattern the reader should distinguish from winning the top of the recommendation list.

Highest-priority diagnostic: Which prompts produced Bank of America's 10.3-point coverage gain, and which competitor captured the rank-one placements the brand lost since July?

Wells Fargo

Wells Fargo fell 11.0 points to 32.6% valid recommendation coverage in September 2026, from 43.6% in August 2026. This was a significant month-over-month decline and erased most of the brand's 11.8-point August gain.

Raw mention presence fell 4.5 points to 73.6% from 78.2% in August. The top-three rate dropped a significant 8.3 points to 6.9% from 15.2% in July 2026, while the rank-one rate rose 0.9 points to 2.8% (4 rank-one placements). Valid recommendations fell from 86 in August to 47 in September.

Wells Fargo's September decline reversed its August rise, returning the brand to roughly its July baseline of 31.8%. The month-over-month movement is the sharper story: the brand gave back most of its August gain in a single month.

Highest-priority diagnostic: Which prompt types or surfaces drove Wells Fargo's August gain, and did those same areas drive the September pullback?

Axos Bank

Axos Bank fell 8.7 points to 16.7% valid recommendation coverage in September 2026, from 25.4% in August 2026. This was a significant month-over-month decline.

Raw mention presence fell 8.7 points to 18.8% from 27.9% in August. The top-three rate dropped a significant 5.2 points to 2.8% from 8.0% in July 2026, while the rank-one rate held essentially flat at 0.7% from 0.8%. Valid recommendations fell from 50 in August to 24 in September.

Axos Bank's September decline returned the brand below its July baseline of 20.4%. The brand's August rise to 25.4% was not sustained. The significant top-three decline measured against July indicates the brand lost prominent placements as well as overall coverage.

Highest-priority diagnostic: Which surfaces contributed Axos Bank's August gain, and which competitor absorbed those recommendation slots in September?

Chase

Chase fell 8.2 points to 58.3% valid recommendation coverage in September 2026, from 66.5% in August 2026. This decline was not significant by the benchmark's movement threshold, though it narrowed the brand's lead over Bank of America from 12.7 points to 4.1 points.

Chase's raw mention presence held nearly flat at 98.6%, with 142 of 144 qualified observations mentioning the brand. The top-three rate was 35.4% and the rank-one rate was 23.6% (34 rank-one placements), down from 24.9% in August. Valid recommendations fell from 131 in August to 84 in September, consistent with the smaller qualified set.

Chase remains the category leader, but its September profile shows a leader whose rank-one dominance is moderating. The brand still appears in nearly every qualified observation and holds the highest top-three and rank-one rates in the category, yet Bank of America closed more than half the August gap.

Highest-priority diagnostic: Which prompts shifted from Chase to another brand in September, and does that shift cluster around specific question types or surfaces?

Mercury

Mercury fell 4.2 points to 35.4% valid recommendation coverage in September 2026, from 39.6% in August 2026. This was not a significant decline.

Mercury's raw mention presence fell to 37.5% from 40.6% in August. The top-three rate was 5.6% and the rank-one rate was 1.4% (2 rank-one placements). Valid recommendations fell from 78 in August to 51 in September, consistent with the smaller qualified set.

Mercury's September profile shows a brand with strong presence relative to its placement quality. The brand holds 35.4% coverage with a 5.6% top-three rate, a wide gap between being recommended and being recommended prominently.

Highest-priority diagnostic: Which fintech-focused prompts drove Mercury's recommendations, and why did top-three and rank-one rates lag its overall coverage?

Bluevine

Bluevine fell 4.1 points to 43.1% valid recommendation coverage in September 2026, from 47.2% in August 2026. This was not a significant month-over-month decline, and the brand remains up 12.8 points from its July 2026 baseline of 30.3%, a significant rise across the series.

Raw mention presence fell to 47.2% from 49.2% in August. The top-three rate was 19.4% and the rank-one rate was 7.6% (11 rank-one placements), down a significant 7.2 points from 14.8% in July. Valid recommendations fell from 93 in August to 62 in September.

Bluevine's September pullback follows its 16.9-point August surge. The brand holds its position as the third-highest coverage brand despite giving back some August ground. The significant rank-one decline measured against July is the notable placement change.

Highest-priority diagnostic: Did Bluevine's rank-one losses concentrate on specific surfaces or prompt types, and which competitor captured those top placements?

PNC Bank

PNC Bank rose 1.3 points to 18.1% valid recommendation coverage in September 2026, from 16.8% in August 2026. This was the largest month-over-month rise among the 10 tracked brands and was not significant.

Raw mention presence rose to 45.1% from 39.6% in August. The top-three rate was 3.5% and the rank-one rate was 2.1% (3 rank-one placements).

PNC Bank is the only tracked brand that gained ground in September, though the move is small. The brand's top-three rate fell a significant 4.8 points from July's 8.3%, indicating that its September coverage gain came at lower list positions.

Highest-priority diagnostic: Which prompts added PNC Bank's coverage in September, and why did top-three share continue to decline?

Capital One Auto Finance

Capital One Auto Finance rose 0.1 points to 11.8% valid recommendation coverage in September 2026, holding essentially flat from 11.7% in August 2026. Across the three-month series, the brand is up 8.4 points from 3.4% in July, a significant rise.

Raw mention presence rose to 20.8% from 6.1% in July, a significant 14.7-point gain. The top-three rate was 4.2% and the rank-one rate was 2.1% (3 rank-one placements), both up from July's 1.1% and 0.4%.

Capital One Auto Finance's coverage stabilized in September after its August jump. The brand's presence gain outpaced its coverage gain across the series, indicating it appears in more qualifying answers than its recommendation share would suggest.

Highest-priority diagnostic: Which prompt types account for Capital One Auto Finance's presence gain, and which brands are recommended in the qualifying answers where it appears without a recommendation?

Citi

Citi fell 1.5 points to 15.3% valid recommendation coverage in September 2026, from 16.8% in August 2026. This was not a significant decline.

Citi's raw mention presence rose to 43.1% from 39.1% in August. The top-three rate was 3.5% and the rank-one rate was 1.4% (2 rank-one placements). Valid recommendations fell from 33 in August to 22 in September.

Citi's September profile shows a brand with high presence and low placement quality. At 43.1% raw mention presence, the brand appears in nearly half of qualified observations but converts that to only 15.3% valid recommendation coverage with a 3.5% top-three rate.

Highest-priority diagnostic: Which prompts mention Citi without recommending it, and which competitor takes the recommendation in those answers?

U.S. Bank

U.S. Bank fell 1.9 points to 43.8% valid recommendation coverage in September 2026, from 45.7% in August 2026. This was not a significant decline, and the brand remains up 3.6 points from its July baseline of 40.2%.

Raw mention presence fell to 84.7% from 78.1% in July, a 6.7-point rise. The top-three rate was 9.0% and the rank-one rate fell a significant 3.0 points to 0.0% (0 rank-one placements in September, down from 8 in July).

U.S. Bank's September profile shows a brand with broad presence but no rank-one placements. The brand appears in 122 of 144 qualified observations but never at the top of a recommendation list, a notable decline from July when it held 8 rank-one placements.

Highest-priority diagnostic: Which competitor captured the rank-one placements U.S. Bank held in July, and which prompts drove that shift?

Buyer-Intent Interpretation

The September 2026 qualified observations fell entirely into the Brand Recommendation cluster. All 144 qualified observations were classified under this cluster, with the Pricing & Value and Multi-Brand Comparison clusters recording zero observations, matching the August pattern. The public benchmark therefore measures which brands receive recommendation credit in direct choice questions, but it cannot yet answer questions about price positioning, fee competitiveness, or head-to-head comparison outcomes.

Brand Opportunity Summary

The benchmark identifies where attention is warranted; a company-level analysis is needed to explain why.

Evidence Behind the Benchmark

The aggregate metrics are built from prompt-level observations (query, surface, recommendation outcome, rank, sentiment, and citations where exposed). Company-level analysis can go deeper into prompt, competitor, surface, and evidence patterns. Source presence is not automatically treated as proof of causation.

About This Benchmark

This report is part of the LLM Authority Index AI Market Discovery research program.

• AI Industry Market Discovery
• AI Industry Market Discovery Methodology
• AI Industry Market Discovery Metrics
• AI Industry Market Discovery Standards

Report-Specific Interpretation Notes

• The qualified observation count declined for a third consecutive month, from 264 in July 2026 to 197 in August to 144 in September 2026. Brand-level percentages are calculated within each month's qualified set, so direct comparison of percentage points reflects both brand movement and changes in the underlying denominator.
• Multiple brands fell from measurable coverage in July 2026 to 0% in later months because they no longer appear in the tracked company list. These are set changes, not measured declines in brand quality.
• Chase, Citi, and Mercury entered the tracked set in August 2026. Their July 2026 baseline is recorded as 0% because they were not tracked, which makes their baseline-to-current movements debut-driven rather than organic gains.
• The September 2026 qualified observations fell entirely into the Brand Recommendation cluster, matching August. Pricing and comparison questions were not present in the qualified set, so category-level pricing and head-to-head conclusions cannot be drawn from this data.
• Movement between months identifies changes worth investigating. It does not by itself establish the cause of those changes.

Next Step

The Public Benchmark Shows Where a Brand Is Winning or Losing. A Company-Level Audit Shows Why.

The aggregate percentages in this report answer where. Chase leads the category, Bank of America closed the gap to 4.1 points, Wells Fargo and Axos Bank gave back their August gains, and U.S. Bank holds broad presence without a single rank-one placement. Beneath those figures sit the questions that matter for strategy: Which high-intent prompts is each brand winning? When a brand loses the recommendation, which competitor takes it? What attributes do AI systems associate with each option? Which external sources shape those answers?

A company-specific AI visibility audit maps those prompt, surface, competitor, ranking, sentiment, and evidence-source patterns into a prioritized visibility strategy. The public benchmark identifies where attention is warranted; the audit explains why and what to do about it.

Request an AI visibility audit