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Affiliated Managers Group

AMGBelow value

Held by 3 superinvestors.

Price$356.21
Margin of safety−18%
Holders3
Total value$340.4M

SEC 10-K · fundamentals

Business quality

as of 2025-12-31

Valuation basis: trailing twelve months to 2026-06-30 — latest 10-K plus unaudited 10-Q filings.

Revenue growth
+1.6%
Net margin
34.5%
ROE
22.1%
FCF margin
46.6%
Revenue $2.03B → $2.07B · 6y
What makes a business high quality

Valuation · value band

Margin of safety

$434/ sh · growth-anchored intrinsic value
margin of safety
fair value
above fair value
$356
cheaperpricier

Zero-growth floor

$248

Central IV

$434

Optimistic top

$530

Affiliated Managers Group (AMG): A conservative value band $248–$530 / sh (zero-growth floor to growth-capped optimistic top); central read about $434. Today’s price sits below that band (price $356 as of 2026-08-21).

The middle figure is the main read. The right end is the optimistic case under the same conservative caps — not an absolute ceiling.

Revenue growth 7% (lower of historical trend and fundamental cap, capped by moat) · moat 10 yr · discount 10.8% · Zero-growth downside $248

Price as of 2026-08-21 · yahoo · DGS10 4.7% @ 2026-08-20.

Method & numbers

Operating income is not reported separately (e.g. banks, insurers, and some diversified issuers), so earnings power is shown via the owner-earnings lens only; the unlevered NOPAT lens does not apply.

Model cautions

  • Owner-earnings yield diverges sharply from the 10-year Treasury (over 300 bps).
  • Growth nearly matches the discount rate — the estimate is sensitive to assumptions.

A conservative intrinsic-value band (zero-growth floor to growth-capped DCF) plus a tangible asset floor — not investment advice, not a buy/sell signal, and not a price target.

Owner-earnings DCF $272.11 – $530.13 · Greenwald zero-growth $302.33 · zero-growth base $302.33 · reproduction $36.93

Moat Franchise (moat) · terminal value 49% of present value · owner-earnings yield 8% vs 10Y 4.7%.

Graham earnings-power value (normalized NOPAT)

Operating income is not reported separately (e.g. banks, insurers, and some diversified issuers), so earnings power is shown via the owner-earnings lens only; the unlevered NOPAT lens does not apply.

Normalized NOPAT from operating margin — not applicable when operating income is not reported separately. Unlevered (pre-interest, attributable to all capital). Capitalized at the 9–11% rate band (read as a WACC proxy). Enterprise → equity bridge (+ cash − total debt) — not applied (lens not assessable).

Years: TTM 2026-06-30, 2024, 2023, 2022, 2021

Buffett owner-earnings value$248.48 – $302.33 / sh

Owner earnings = average net income + average D&A − maintenance capex (zero-growth floor; no ΔNWC). Levered (starts from net income, already after interest — an equity-holder stream). Capitalized at the 9.2–11.2% band (9–11% base + 0.2pp leverage premium). No enterprise→equity bridge: the capitalized result is already equity value (subtracting debt would double-count interest).

Years: TTM 2026-06-30, 2024, 2023, 2022, 2021

v1 simplifications: Maintenance capex or D&A unavailable → degraded to normalized net income (= average net income over the years shown). One-time items are not separately normalized (multi-year averaging smooths them partially). Share-based compensation is left as a real expense (not added back); see the SBC/OE disclosure. Capitalized at the 9–11% base band plus a 0.2pp leverage premium (cost of equity rises with leverage — MM Proposition II). Net debt is about 3.5 years of owner earnings, adding 0.2pp of cost-of-equity risk premium.

Asset floor: Reproduction value = tangible net assets + acquired-intangible reset proxy, ÷ diluted shares; tangible net assets alone are negative for this asset-light franchise (no R&D history to capitalize).

Moat reading: Franchise test compares earnings power (EPV) against reproduction value (tangible net assets + capitalized R&D). EPV well above reproduction value signals a moat; near it, a commodity; below it, value destruction. A directional reading, not a verdict.

Assumes a narrow moat · competitive-advantage period ≈ 10 years.

Growth value not assessable — Operating income is not available across the window, so ROIIC / growth value cannot be computed.

Window TTM 2026-06-30, FY 2024, 2023, 2022, 2021 · discount band 9%–11% · normalized tax 21% (Average effective tax rate over 5 year(s), capped at the statutory 21%.) · diluted shares.

Baseline 9%–11%, net debt ≈ 3.5 years of owner earnings → +0.2pp cost-of-equity premium → effective 9.2%–11.2%.

Owner-earnings DCF: growth g₁ 7% · OE FY TTM 2026-06-30, 2024, 2023, 2022, 2021 · Discount band: 9.42%–12.23% (DGS10 +4.5% to a 12% strict end, each +0.23pp for leverage premium, as of 2026-08-20). No enterprise→equity bridge: owner earnings already flow to shareholders (post-interest), so no net cash is added and no debt subtracted — matching the engine owner-earnings lamp.

Valuation basis: trailing twelve months to 2026-06-30 — latest 10-K plus unaudited 10-Q filings.

How to read intrinsic value

SEC 13F · holders

Superinvestors Holding This Security

3 holders · $340.4M combined · this quarter +1 opened / -1 exited

This quarter1 opened1 trimmed1 exited
Holders 4 → 3 · last 8q
Exited this quarter (1)
Ray Dalio

SEC 13F · notes

Written summary

Affiliated Managers Group (AMG) is held by 3 of the superinvestors tracked on Compounder, with a combined $340.4M in reported 13F value. The largest position belongs to John Rogers, where it makes up 3.4% of the portfolio.

Other notable holders by value include Mason Hawkins (0.1% of its book) and Dodge & Cox (0.0% of its book).

Over the latest quarter, 1 of the tracked filers opened a new position in AMG, 0 added to existing ones, 1 trimmed, and 1 sold out entirely.

Holder counts and values reflect the most recent SEC Form 13F filings, through the quarter ended 2026-06-30. Source: SEC EDGAR. A 13F shows only long US-listed positions and can lag the real portfolio by up to 45 days, so this is disclosed long ownership, not a complete picture.

How to read a 13F

SEC 13F · co-ownership

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AMG's price is below its conservative value band. Browse all undervalued stocks by margin of safety

Also on

Sources· SEC EDGAR 13F as of 2026-06-30 · filed 2026-08-14

Educational data only — not investment advice. 13F positions are self-reported and can lag up to 45 days.

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