Data as of:
LIVE
BRK-B
Berkshire Hathaway Inc. Class B · Financial Services / Diversified Holding Company
$509.77
+2.81% this month
VERSUS
COMPARE
AIG
American International Group Inc. · Financial Services / Property & Casualty Insurance
$75.33
-1.04% this month
Comparison scoreboard
BRK-B LEADS 3/5AI Scorei
BRK-B ✓52.5
AIG 41.4
1Y Returni
BRK-B ✓+3.43%
AIG -2.14%
Fwd P/Ei
BRK-B 22.76
AIG ✓8.57
Target Up.i
BRK-B +8.45%
AIG ✓+17.48%
Op. Margini
BRK-B ✓32.56%
AIG 19.41%
Metrics last refreshed: 9/21/2026
Quick take
BRK.B vs AIG Stock Comparison: AI Score, Valuation, Performance and Upside
BRK.B and AIG represent different insurance-based investment theses. Berkshire Hathaway uses insurance float to fund one of history's greatest investment portfolios — Buffett's capital allocation track record is the core investment thesis. AIG is a commercial insurance recovery story — rebuilding underwriting discipline and shareholder value after a near-catastrophic 2008 collapse. Berkshire is an established conglomerate; AIG is a turnaround requiring sustained execution confidence.
BRK.B vs AIG — Berkshire Hathaway Class B (Warren Buffett's insurance-float-funded conglomerate with $350B+ equity portfolio, 60+ operating businesses, and 58-year compounding track record at 20% annual book value growth) versus AIG (global commercial insurance company rebuilding underwriting quality post-2008 bailout under new management with Corebridge stake monetization providing capital return).
Live analysis · updated 9/21/2026
BRK-B holds the edge across 3 of 5 key metrics in this comparison. BRK-B has delivered stronger 1-year price return (+3.43% vs -2.14%), though AIG has the better forward P/E setup (8.57x vs 22.76x for BRK-B). BRK-B leads on both revenue growth (10.00%) and operating margin (32.56%), suggesting a stronger fundamental setup on both dimensions. Analyst consensus implies meaningfully more upside for AIG (+17.48%) than for BRK-B (+8.45%).
Normalized 1Y performance
BRK-B
AIG
Recent returns
BRK-B
AIG
Analyst price targets & sentiment
Human Wall Street analysts' price targets, typically implying a ~12-month view — a separate signal from this site's own AI Prediction Signal further down the page, which is a 5-/30-day machine-learning forecast based on price history alone.
BRK-B · 3 analysts
STRONG BUYHOLDSTRONG SELL
Buy (2.0/5.0)
2 Buy / 2 Hold / 0 Sell
Price target range
analyst low$485.00
analyst high$591.00
analyst mean$547.67
current price$509.77
+8.4% upside to analyst mean
AIG
Price target range
analyst mean$88.50
current price$75.33
+17.5% upside to analyst mean
Who should consider this stock?
BRK.B may suit investors who:
- want Warren Buffett's diversified holding company approach — effectively owning a portfolio managed by history's greatest capital allocator with built-in insurance float financing
- prefer BRK's conglomerate resilience across insurance, rail, utilities, and manufacturing vs pure-play insurance company cyclicality
- are comfortable with Buffett succession risk as Greg Abel transitions to leadership — trusting that Berkshire's culture and structure will survive the eventual leadership change
- value Berkshire's $170B+ cash reserve as both strategic optionality for large acquisitions and downside protection during market dislocations
AIG may suit investors who:
- believe AIG's underwriting transformation under CEO Zaffino is genuine and durable — the commercial insurance combined ratio improvement reflects real cultural change rather than cyclical improvement
- want exposure to global commercial insurance recovery at valuation discount to Chubb — AIG trades cheaper than best-in-class commercial insurers if the turnaround is credible
- value Corebridge Financial stake monetization as a capital return catalyst — selling the life insurance business stake provides BuyBack and dividend funding
- are comfortable with AIG's 2008 legacy risk and the ongoing management execution risk of a complex global insurance organizational transformation
Performance & AI score
| Metric | BRK-B | AIG |
|---|---|---|
| AI scorei | 52.5 | 41.4 |
| AI ranki | #389 | #1048 |
| Latest closei | $509.77 | $75.33 |
| 1M returni | +2.81% | -1.04% |
| 6M returni | +5.99% | +1.26% |
| 1Y returni | +3.43% | -2.14% |
$10,000 invested — hypothetical growth (dividends reinvested)
How much would $10,000 be worth today if invested at the start of each period, with all dividends reinvested?
| Period | BRK-B | AIG |
|---|---|---|
| 1Y ago | $10.33K (+3.3%) started 2025-09-22 | $9.84K (-1.6%) started 2025-09-22 |
| 5Y ago | $18.6K (+86.0%) started 2021-09-22 | $16.46K (+64.6%) started 2021-09-22 |
| 10Y ago | $34.79K (+247.9%) started 2016-09-22 | $20.12K (+101.2%) started 2016-09-22 |
Hypothetical — past performance does not guarantee future results.
Valuation & upside potential
| Metric | BRK-B | AIG |
|---|---|---|
| Market capi | $1.08T | $39.39B |
| Trailing P/Ei | 12.71 | 13.75 |
| Forward P/Ei | 22.76 | 8.57 |
| Price/Salesi | 2.87 | N/A |
| EV/Revenuei | -0.61 | 1.42 |
| Analyst targeti | $547.67 | $88.50 |
| Target upsidei | +8.45% | +17.48% |
Growth, profitability & risk
| Metric | BRK-B | AIG |
|---|---|---|
| Revenue growthi | 10.00% | 0.50% |
| Earnings growthi | 107.80% | -10.10% |
| EPS growthi | +107.80% | -10.10% |
| FCF margini | +18.71% | +27.54% |
| Operating margini | 32.56% | 19.41% |
| Profit margini | 22.30% | 11.09% |
| ROIC proxyi | 12.12% | 7.22% |
| Return on equityi | 12.12% | 7.22% |
| Dividend yieldi | N/A | 2.65% |
| Payout ratioi | 0.00% | 33.76% |
| Dividend growth streaki | N/A | No increase yet |
| Betai | 0.61 | 0.51 |
| Debt/equityi | 17.14 | 22.47 |
| Current ratioi | 2.89 | 0.61 |
| Quick ratioi | 2.69 | 0.22 |
Correlation
Over the past year, BRK-B and AIG have moved weakly in the same direction (correlation of 0.35), based on daily returns.
1Y
0.35
-1.0+1.0
5Y
0.62
-1.0+1.0
10Y
0.66
-1.0+1.0
Drawdown & downside risk
Lower drawdown and smaller single-period drops generally indicate a smoother ride, though they do not guarantee lower future risk.
1Y risk snapshot
BRK-B max drawdowni9.42%
AIG max drawdowni16.98%
BRK-B max wkly dropi5.89%
AIG max wkly dropi12.19%
5Y risk snapshot
BRK-B max drawdowni26.58%
AIG max drawdowni26.45%
BRK-B max wkly dropi11.48%
AIG max wkly dropi17.02%
10Y risk snapshot
BRK-B max drawdowni29.57%
AIG max drawdowni69.58%
BRK-B max wkly dropi15.79%
AIG max wkly dropi41.36%
Performance metrics by period
| Period | Metric | BRK-B | AIG |
|---|---|---|---|
| 1Y | Growthi | +3.25% | -1.57% |
| CAGRi | +3.27% | -1.58% | |
| Volatilityi | 14.58% | 24.04% | |
| Sharpe ratioi | -0.01 | -0.13 | |
| Sortino ratioi | -0.02 | -0.18 | |
| Max drawdowni | 9.42% | 16.98% | |
| Current drawdowni | 3.71% | 13.00% | |
| Avg drawdowni | 3.99% | 9.51% | |
| Ulcer Indexi | 4.63% | 10.45% | |
| Max daily dropi | 4.91% | 7.48% | |
| Max wkly dropi | 5.89% | 12.19% | |
| 5Y | Growthi | +86.00% | +51.78% |
| CAGRi | +13.22% | +8.71% | |
| Volatilityi | 17.18% | 26.02% | |
| Sharpe ratioi | 0.55 | 0.28 | |
| Sortino ratioi | 0.80 | 0.39 | |
| Max drawdowni | 26.58% | 26.45% | |
| Current drawdowni | 5.56% | 14.12% | |
| Avg drawdowni | 7.41% | 7.98% | |
| Ulcer Indexi | 9.61% | 10.00% | |
| Max daily dropi | 6.91% | 8.41% | |
| Max wkly dropi | 11.48% | 17.02% | |
| 10Y | Growthi | +247.89% | +58.63% |
| CAGRi | +13.28% | +4.72% | |
| Volatilityi | 19.43% | 32.50% | |
| Sharpe ratioi | 0.51 | 0.17 | |
| Sortino ratioi | 0.73 | 0.23 | |
| Max drawdowni | 29.57% | 69.58% | |
| Current drawdowni | 5.56% | 14.12% | |
| Avg drawdowni | 6.72% | 14.55% | |
| Ulcer Indexi | 8.96% | 20.07% | |
| Max daily dropi | 9.59% | 20.84% | |
| Max wkly dropi | 15.79% | 41.36% |
Business comparison
| Category | BRK-B | AIG |
|---|---|---|
| Company | Berkshire Hathaway Inc. Class B | American International Group Inc. |
| Sector | Financial Services | Financial Services |
| Industry | Insurance - Diversified | Insurance - Diversified |
| Core business | Berkshire Hathaway is Warren Buffett's diversified holding company built around insurance float. Core insurance operations include GEICO (personal auto insurance), Berkshire Hathaway Reinsurance Group, and General Re. These generate float (premiums collected before claims paid) that Buffett invests in equities (Apple, Coca-Cola, American Express, Bank of America, and 40+ others at $350B+ equity portfolio value), operating businesses (BNSF railroad, Berkshire Hathaway Energy utilities, manufacturing companies), and cash/Treasuries ($170B+ cash equivalent). Berkshire's unique model uses cheap insurance float to fund diversified equity investments compounding at exceptional rates over 50+ years. | AIG is one of the world's largest commercial insurance companies — providing property, casualty, specialty, and financial lines insurance to corporations, institutions, and governments globally. AIG's 2008 financial crisis near-collapse (from credit default swap exposure in its financial products subsidiary) required a $182B government bailout — one of history's largest insurance disasters. The post-2008 decade involved restructuring, government stock sales, and refocusing AIG on its core commercial insurance operations. AIG has divested life insurance (separated as Corebridge Financial in 2022) and returned to a pure commercial P&C focus under CEO Peter Zaffino. |
| Investor focus | Investors focus on Berkshire's equity portfolio performance (Apple, Coca-Cola, American Express dominance), operating business earnings (BNSF, BHE), underwriting profitability of GEICO and reinsurance, and Buffett succession planning (Greg Abel is designated successor). | Investors focus on AIG's commercial insurance combined ratio improvement, Corebridge Financial stake monetization, capital return through buybacks, and whether AIG's underwriting culture can sustainably achieve Chubb-like discipline after years of legacy problems. |
BRK-B strengths
- Unique insurance float investment model: Berkshire's insurance float provides essentially free or negative-cost financing for equity investments — compounding advantage over normal insurance companies that merely earn underwriting profit
- Diversified conglomerate resilience: 60+ operating businesses across insurance, rail, utilities, manufacturing, and retail provide earnings diversification no pure-play insurer can match
- Buffett's capital allocation excellence: 58-year track record of exceptional investment decisions compounding book value at 20%/year — the longest and best capital allocation track record in business history
AIG strengths
- Global commercial insurance platform: AIG has one of the broadest global commercial insurance networks — 70+ countries, specialty insurance products, and relationships with the world's largest corporations
- Management transformation under Zaffino: AIG has made genuine progress on underwriting discipline, portfolio remediation, and cultural transformation since Zaffino became CEO in 2021
- Capital return as Corebridge stake is monetized: selling AIG's Corebridge Financial stake releases capital for buybacks and dividends — shareholder returns are improving
Risks to watch — BRK-B
- Buffett succession uncertainty: Greg Abel as designated CEO successor has yet to demonstrate Buffett's investment philosophy in practice — transition risk remains a genuine long-term concern
- Apple concentration: Apple represents 40%+ of Berkshire's equity portfolio — concentration in a single technology company creates significant single-stock risk at portfolio scale
- Size limits returns: Berkshire's $900B+ market cap limits investment universe — Buffett has repeatedly noted that Berkshire's size makes future return matching historical rates essentially impossible
Risks to watch — AIG
- 2008 legacy and cultural residue: AIG's near-failure in 2008 reflects fundamental cultural and risk management failures — whether these have been truly remedied is an ongoing question for investors
- Combined ratio improvement pace vs peers: AIG's underwriting quality is improving but still trails best-in-class commercial insurers like Chubb — competitive gap narrowing but not eliminated
- Management execution risk: AIG's transformation is personnel-dependent — new CEO strategy execution requires sustained organizational change in a complex global insurance organization
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