Earnings research

Earnings Stock Analysis: How to Research a Company After Earnings

A continuously refreshed research note connecting current market developments with a repeatable stock-analysis workflow. Updated November 12, 2026.

Current update — November 12, 2026

Berkshire’s November 7 filings show a quarter where capital allocation did heavy lifting while operations diverged by segment. The company repurchased about $9.6 billion of stock in Q3 (roughly $14.4 billion for the first nine months), while headline GAAP net earnings were volatile as usual from investment marks. Under the hood, BNSF’s operating revenue and earnings rose on volume and fuel‑surcharge yield; Berkshire Hathaway Energy’s profits improved in U.S. utilities and pipelines; insurance underwriting income eased versus last year and investment income declined on lower short‑term rates. For valuation, separate operating from mark‑to‑market effects, and use segment‑level trends to refresh a sum‑of‑the‑parts, then test buyback‑driven per‑share lifts against normalized cash generation.

Research workflow at a glance

Step 1

Revenue

Separate durable growth from one-time effects.

Step 2

Margins

Check operating leverage and cost pressure.

Step 3

Cash flow

Confirm whether earnings convert into cash.

Step 4

Guidance

Rebuild valuation assumptions after management updates.

Start with operating vs. GAAP

In Q3 2026, Berkshire reported GAAP net earnings of $22.2B, dominated by unrealized investment gains. Investment gains and losses are noisy; focus on operating engines: insurance, BNSF, BHE, and manufacturing/service/retail. Insurance investment income fell y/y, while underwriting income softened. BNSF and BHE improved. For valuation, avoid attaching market‑multiple logic to GAAP net income. Instead, (1) model normalized underwriting margins by line, (2) apply a through‑cycle ROE to BNSF and BHE, and (3) add back investment income using current treasury and dividend yields, not last year’s higher cash returns.

Insurance: watch loss ratio drift and pricing

Property/casualty underwriting income declined versus Q3 2025 as the loss ratio ticked up. There were no major catastrophe losses in 2026 YTD versus 2025, but prior‑year reserve releases and frequency/severity mix mattered. With October CPI showing sticky services inflation, assume elevated claims severity in auto and certain commercial lines until pricing fully resets. In your checklist, extract: written vs. earned premium growth, changes in expense and loss ratios, and any reserve adjustments. Sensitize underwriting margins ±200 bps and rerun look‑through EPS and book‑value growth.

Research the ticker while the context is fresh

Download Simple AI Stock Valuation and generate a structured research report for a supported stock or ETF instead of rebuilding the same workflow across separate filings, spreadsheets, charting, market-data, and news tools. Review the report first; if the workflow saves you time, continue with the paid subscription or in-app purchase option that fits your research needs. Eligible subscriptions include a 3-day free trial.

BNSF: revenue quality improved, but fuel is a swing factor

BNSF’s operating revenues and earnings rose on higher average revenue per car/unit (notably fuel surcharges) and modest volume gains across consumer, agricultural/energy, and industrial shipments. Operating expenses also rose, led by fuel. For cash‑flow valuation, test sensitivity to diesel prices and surcharge pass‑through lags. Elevated yields raise BNSF’s discount rate; pair that with updated carload and yield assumptions to refresh mid‑cycle EBITDA and capex (rights‑of‑way and locomotives) before applying an infrastructure multiple.

Berkshire Hathaway Energy: utilities and pipelines steadier

BHE posted higher earnings from U.S. utilities and natural‑gas pipelines, partly offset by softer results in other energy businesses and real estate brokerage. With long rates near 5%, regulated returns and allowed equity layers matter more to valuation than near‑term commodity swings. In a sum‑of‑the‑parts, build BHE using a regulated‑utility framework: rate base growth, allowed ROE, and debt cost rollovers. Flag depreciation and interest expense trajectories given the current curve and any upcoming rate‑case calendars.

Capital allocation: repurchases and the per‑share lens

Repurchases of about $9.6B in Q3 tightened share count and support per‑share compounding, but durability depends on cash generation across segments. Cross‑check buyback pace against insurance float growth, investment income run‑rate, and capex needs at BNSF/BHE. In scenarios, haircut buybacks if underwriting margins compress or if higher long rates sustain. Avoid baking in GAAP equity gains; anchor to operating cash flows and segment‑level ROEs. Reconcile your sum‑of‑the‑parts to reported book value and note the gap as implied ‘conglomerate discount’ or premium.

Manual research versus a structured report

The app is not a substitute for judgment. Its advantage is reducing repetitive collection and organization so you can spend more time reviewing assumptions, source quality, valuation sensitivity, and risk.

Research task	Manual workflow	With Simple AI Stock Valuation
Gather inputs	Open filings, data pages, charts, and news separately.	Generate one structured report for a supported ticker or ETF.
Valuation	Build and maintain spreadsheets and assumptions yourself.	Review DCF and other valuation context alongside the source material and assumptions.
Cross-check risk	Manually reconcile fundamentals, technicals, scenarios, and recent events.	Review those research dimensions in a repeatable report workflow.
Output	Save notes across multiple tools or documents.	Keep a downloadable PDF research artifact for later review.

Sources and further reading

Research the stock in Simple AI Stock Valuation

Move from the current headline to company-specific due diligence. Download the app on Android or iOS, generate a report for a supported stock or ETF, and review fundamentals, valuation context, technical analysis, risks, scenarios, charts, sources, validation, and disclosures in one repeatable workflow. If it is useful for your research process, continue with the available paid subscription or in-app purchase option. Eligible subscriptions include a 3-day free trial.

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Disclosure: This page is informational and educational only. It is not personalized financial or investment advice, a recommendation to buy or sell any security, or a promise of future results. Market information changes rapidly; verify material facts with primary sources and company filings.