I'll research AJG (Arthur J. Gallagher & Co.) before writing the preview. Let me gather recent filings, transcripts, and news.I'll read the most recent earnings call (Q1 2026) and the prior-year Q2 2025 to understand trends and guidance, plus recent news.Let me get the prior-year Q2 2025 release (for YoY comps), recent news, and the stock price trend.Let me check for any June Investor Day update and recent analyst/news activity heading into the print.The June 17 pre-Q2 investor meeting is the most important recent update. Let me read it — it likely contains refreshed Q2 organic guidance and synergy updates.I have rich material. Let me do a quick check for consensus estimates and compute a few figures.I now have everything I need. Here's the earnings preview.

Arthur J. Gallagher & Co. (AJG) — Q2 2026 Earnings Preview

Report date: After market close, Thursday, July 30, 2026 (call 5:15 p.m. ET) · Quarter: 2026Q2

The one-line setup

Gallagher enters this print with a well-telegraphed story: solid mid-single-digit brokerage organic, accelerating Risk Management growth, a big reported-revenue jump from the first full quarter of AssuredPartners (AP) — but a noisy, optically-ugly year-over-year margin and EPS comparison because the prior-year quarter was inflated by interest income on cash held to fund AP. The stock has ripped into the print (+~11% in the week ending 7/29 to ~$269), so the bar is high.

What the Street expects

Adjusted EPS consensus ≈ $2.82–$2.91 (roughly $2.84 midpoint), up ~22% from $2.33 in Q2 2025.
Revenue ≈ $4.0–4.06B (before reimbursements), up sharply YoY driven by AP.
Management's own guidance (from the June 17 pre-Q2 investor meeting) points to:
Brokerage organic ~5%
Risk Management organic ~11% (raised from prior expectations on new-business wins)
Full-year 2026: Brokerage ~5.5%, Risk Management ~8%, combined ~6%

The single most important thing to understand: the comp distortion

In Q2 2025, Gallagher earned ~$144M of interest income (~$0.41/share after tax) on the cash it was holding to fund the AssuredPartners deal (which closed August 2025). That income does not recur in Q2 2026. Management has repeatedly flagged this as the "headline headache" for Q2 and Q3 2026.

Implications for how to read the release: - Reported/adjusted brokerage EBITDAC margin will likely look DOWN year-over-year even though the underlying business is expanding margins. (For reference, Q2 2025 brokerage adjusted EBITDAC margin of 36.4% included that interest income.) - The number that actually matters is underlying/organic margin expansion, which management guides to +40–60 bps for the full year (Q1 delivered +50 bps). Look at the brokerage margin bridge in the CFO commentary, not the headline. - Consensus EPS growth of ~22% is after absorbing the loss of that $0.41 — so the underlying earnings power is stronger than the headline implies.

Key things to watch

1) Organic growth — is the "diversification beats the cycle" thesis holding?

This is the debate. Property pricing is softening fast, and management has been front-running investor skepticism: - In the first two months of Q2, property RPC was down ~9% overall (US retail property down ~11%), while casualty was up ~7% (commercial auto +8%, umbrella +8%, GL +4%). Ex-property RPC was up ~3–4%. - Management's key framing: rate is only ~1 point of the ~5.5% organic outlook. The rest is net new business (~2.5–3 pts), exposure growth, and clients "opting back in" to coverage as prices fall. Property is largely fee-based on big/cat accounts, muting the revenue hit from rate declines. - Watch: Does brokerage organic land at/above 5%? Any sign property softening is bleeding through more than the "1 point" framing? Watch US wholesale (RPS) — management called it "the tail that whips" on property.

2) The back-half acceleration question

Management maintains Brokerage organic accelerates to ~5.5% for the year, implying a stronger 2H (they framed Q3/Q4 as roughly "6 and 4" or "7 and 5"). Reinsurance mid-year renewal demand and fee-account raises are the cited drivers. Look for confirmation the 2H ramp is intact — this is where a guidance disappointment could hurt given the stock's run.

3) Risk Management (Gallagher Bassett) — the quiet outperformer

Guided to ~11% Q2 organic, up from earlier expectations, on large new-business wins flagged late last year, with EBITDAC margins of 21–22%. GB is less tied to the pricing cycle and increasingly an AI/claims-tech story (fraud-detection model reportedly saved one client >$100M). A clean beat here supports the diversification narrative.

4) AssuredPartners integration & synergies

This is the first full Q2 with AP, so reported revenue/EBITDAC will jump; total company adjusted revenue should approach ~$4B.
Synergy target was raised to "up to $325M by early 2028" (from $300M in April, and $160M at deal announcement in Dec 2024). Any further raise, or an in-year ~$160M run-rate update, would be a positive.
Note the revenue/expense geography quirk: AP's revenue line bounces as co-broker fees get re-classed net vs. gross; EBITDAC is the number that holds (management "bought the cash flow"). Don't over-read AP revenue optics.
Revenue synergies are not in the organic figure — potential upside ("ghost organic") that shows up in AP's numbers instead.

5) Capital allocation & M&A

Buybacks: $310M in Q1, another $170M in Q2 (through mid-June); management calls the stock "undervalued" but clearly favors M&A ("buying brains").
~$10B of M&A capacity over two years before issuing stock; tuck-in multiples are coming down — a recurring, notable theme (sellers "coming to grips" on valuation).
Tuck-in pace was light early in the year (~15 deals / ~$115M revenue YTD as of mid-June) but pipeline is robust (~40 term sheets / ~$600M revenue). Watch the deal-count/pipeline update.

6) AI narrative

Heavy emphasis on AI as a productivity/quality lever (potential 5% savings in producer layer, 10–15% service layer, 20–30% back office over 3–5 years) and a growth enabler (higher hit ratios via Gallagher Drive/Blueprint), explicitly framed as enhancing, not disintermediating the broker. Expect more of this; it's a margin-runway and moat story more than a near-term number.

Modeling anchors (from prior disclosures)

Effective tax rate ~21%; cash taxes ~10% of EBITDAC (helped by ~$11B of future amortization deductions + tax credit carryforwards).
Corporate segment: watch non-cash FX remeasurement swings (noise in EPS).
Q1 2026 marked the 24th consecutive quarter of double-digit adjusted EBITDAC growth — streak continuation is a soft expectation.
Q2 2025 reference points: Brokerage adjusted EPS $2.75, total company adjusted EPS $2.33, brokerage total organic 5.3%, RM organic 6.2%.

Stock setup / risk-reward

AJG is only ~+5% YTD (from ~$256 to ~$269), having round-tripped a sharp Feb–May drawdown (to ~$192 in mid-May) — it has lagged Aon (~+10% YTD) while roughly tracking/beating Brown & Brown (~-3%).
The concerning near-term dynamic: a ~11% rally in the final week into the print (from ~$242 on 7/23 to ~$269 on 7/29) raises the bar. Given AJG's history of sharp post-earnings moves, a merely in-line organic print with the usual optically-soft margin comp could disappoint a now-elevated setup.
Governance housekeeping: a 7/29 8-K named a new Lead Independent Director and reduced board size — not financially material.

Bottom line

The fundamentals should be fine-to-good: ~5% brokerage organic, ~11% Risk Management, big AP-driven revenue growth, and rising synergies. The traps are optical — reported margins/EPS growth look muddied by the lost prior-year interest income. Focus on (1) brokerage organic vs. ~5% and the 2H acceleration commentary, (2) underlying margin expansion (+40–60 bps), (3) any AP synergy raise, and (4) tone on property pricing into 2027. With the stock stretched into the report, the reaction likely hinges more on the organic trajectory and forward tone than on the headline EPS beat/miss.

Note: adjusted (non-GAAP) figures referenced throughout; consensus figures are from third-party aggregators and may differ modestly from the company's ultimate reported basis.