The label on the tin says "sustainable." The holdings inside say otherwise. We screened the 40 largest self-described ESG ETFs against carbon intensity, governance, and controversy thresholds — and a third of them failed.

How we ran the screen

Fund marketing is cheap; holdings are honest. For each ETF, we pulled the full holdings list and scored every position on three axes: scope 1–2 carbon intensity relative to sector peers, board independence and shareholder rights, and involvement in severe controversies over the trailing 36 months.

A fund failed the audit if more than 15% of its weight sat in bottom-quartile carbon performers, or if any top-ten holding carried an unresolved severe controversy. These are deliberately forgiving thresholds — which makes the failure rate more striking.

Key finding: 12 of the 40 funds we audited — holding a combined $38B in assets — failed at least one screen while charging a premium "sustainability" expense ratio.

Where the greenwash hides

The most common trick is index-hugging: a fund tracks a broad benchmark, drops a handful of the worst offenders, and keeps everything else — including fossil-fuel majors held through "transition" carve-outs. The second is scoring on disclosure rather than performance: companies that publish glossy sustainability reports rank well even when the underlying numbers are moving the wrong way.

None of this is illegal. Most of it is disclosed, in paragraph nine of a PDF nobody reads. That's exactly why holdings-level auditing matters more than any label.

What to own instead

The good news: 28 funds passed, and the passers didn't sacrifice returns — the median passing fund outperformed the median failing fund by 1.9% annualized over five years, with lower drawdowns during the 2025 energy shock. Subscribers can access the full pass/fail table, our replacement picks for each failing fund, and the raw screening data in the premium appendix.

As always: this is research, not a recommendation. Check the holdings yourself — we've linked every source — and size positions for your own risk tolerance.