Verdict: Side-by-side breakdown using the Bull Rankings model. ACGL scored 76.0, AIG scored 73.0 — ACGL leads.
Compare another set
ACGL
Arch Capital Group Ltd.
Insurance - Diversified · Financial strength
68.4Fin
$96.85 · $33.0B
fundamentals as of
Strength gap
7.5
ACGL leads
AIG
American International Group, Inc.
Insurance - Diversified · Financial strength
60.9Fin
$77.65 · $40.6B
fundamentals as of
At a glance · who leads each dimension, on the model's own rules
CheapestACGL7.6x
Fastest growthACGL+14.0%
Side by side · every name on one set of axes
Growth against the P/E multiple. Up and to the right is cheaper and faster — the quality-growth idea in one picture. Points beyond the axis are pinned to the edge and marked off-scale rather than allowed to compress everything else.
Fundamentals, head-to-head
ACGL
AIG
+14.0%B+
Rev
-1.8%D+
7.6xA
P/E
14.2xB
19.9%B+
ROE
7.2%C+
1.42B+
P/B
1.00A-
0.0%C
Yield
2.6%B
Winner per row is the stronger grade; where grades tie, the better figure breaks it. A true tie or a missing value shows no highlight.
The companies
ACGLArch Capital Group Ltd.
Insurance - Diversified · $96.85 · beta 0.26
Why now
Insurance - Diversified · market cap $33.0b. 10% off the 52-week high of $107.09. Revenue growing +14%, comfortably above the S&P median. 19 sell-side analysts rate this a Buy with a mean 1-yr target of $110.13 (implying +14% upside).
Moat
Net margin 24% sits well above the S&P median (~11%) — suggests structural pricing advantage or cost discipline competitors can't quickly close. ROE 20% is above 15% — the equity base is compounding at a rate the market struggles to discount accurately. Financial moat — scale of deposit base / underwriting franchise plus regulatory capital advantages. The largest players compound book value through cycles that erase smaller competitors.
Risk
Balance-sheet financial — book value, net interest margin, and credit loss provisions are the lever points; a rates regime change or a deterioration in the loan book moves the stock more than EPS does.
AIGAmerican International Group, Inc.
Insurance - Diversified · $77.65 · beta 0.53
Why now
Insurance - Diversified · market cap $40.6b. 11% off the 52-week high of $87.29. PEG 0.65 — paying under fair value for the growth rate. 20 sell-side analysts rate this a Buy with a mean 1-yr target of $88.20 (implying +14% upside).
Moat
Financial moat — scale of deposit base / underwriting franchise plus regulatory capital advantages. The largest players compound book value through cycles that erase smaller competitors.
Risk
ROE 7% is below the long-run sustainable threshold of ~10% — capital efficiency would need to improve for the equity base to compound at the market rate. Balance-sheet financial — book value, net interest margin, and credit loss provisions are the lever points; a rates regime change or a deterioration in the loan book moves the stock more than EPS does.
Verdict — model-derived comparison
Generating verdict… typically 5–10 seconds
Not investment advice. The Bull Rankings publishes a quantitative ranking model and accompanying analysis for general informational purposes only. Nothing on this page is a recommendation to buy, sell, or hold any security; nothing is personalized to your circumstances, risk tolerance, or tax situation. Investing carries the risk of loss — invest at your own risk and consider consulting a licensed financial professional before acting on anything you read here. See terms and methodology for full disclosures.
Common questions
Is ACGL or AIG the better stock?
ACGL scores higher: ACGL 76.0, AIG 73.0 out of 100 on the Bull Rankings quality-growth score, which blends business quality, growth and valuation into one number. A higher score means a stronger business at a more reasonable price — it is not a price target or a recommendation.
How are ACGL and AIG scored?
Each carries the same 0–100 quality-growth score used everywhere on the site, built from three pillars — quality (profitability and returns on capital), growth (revenue and earnings), and value (what you pay for them) — combined as a geometric mean, so a weak pillar cannot be papered over by a strong one.
How current is this comparison?
The whole universe is re-scored every trading day after the US market close, so the scores and fundamentals here reflect the latest published edition.