PABU vs USCL

PABUBiShares Paris-Aligned Climate Optimized MSCI USA ETF

USCLAiShares Climate Conscious & Transition MSCI USA ETF

In short

PABU A Paris climate mandate at plain index-fund pricing. PABU follows an MSCI benchmark that pushes US large and mid caps onto a decarbonization path, landing on roughly 90 stocks for 0.10% a year.

USCL Most ESG index funds work by exclusion. USCL scores roughly 400 US large and mid caps on where they're heading instead: emissions intensity, reduction targets, green revenue. And it charges 0.08% a year to do it.

Stated mandate

PABU The fund tracks the MSCI USA Climate Paris Aligned Benchmark Extended Select Index, which is composed of U.S. large- and mid-capitalization stocks selected and weighted to follow a decarbonization trajectory, reduce climate-related transition and physical risks, and increase exposure to companies positioned for the low-carbon transition.

USCL The Fund seeks to track an index of U.S. large- and mid-capitalization companies selected for their relative positioning on the transition to a low-carbon economy, using climate-related measures such as emissions intensity, reduction targets, green-business revenue, and climate-risk management.

Why people hold it

• PABU 0.10% a year, half the 0.20% median for its US equity peer group, and level with the cheapest broad-beta names in that group like GUSA.
• The climate work is written into the index, not left to a manager: MSCI selects and weights names to follow a decarbonization trajectory and cut transition and physical climate risk.ishares.com
• Live since 2022, run on the iShares shelf, and now a multi-billion-dollar fund. Among the stronger mandate implementations in its peer group.
• Quarterly distributions and a straightforward index structure, so there is no derivatives layer or options overlay to unpack.

• USCL At 0.08% a year, it matches the cheapest fund in its ESG cohort (XVV) and undercuts ESGV, SNPE, EFIV and ESGU.ishares.com
• The index doesn't just screen out offenders. It selects on transition evidence: emissions intensity, reduction targets, green-business revenue, climate-risk management.ishares.com
• About 400 US large and mid caps, so it reads as core equity exposure with a climate tilt, not a narrow clean-energy sector bet.
• A multi-billion-dollar iShares fund that sticks tightly to the MSCI USA Extended Climate Action Index, one of the cleaner implementations in its peer group.

Worth knowing

• PABU Roughly 90 stocks, not the whole market. Results can diverge from a standard US large-cap fund in either direction.
• Thinly traded next to broad-beta peers such as ILCB, so spreads can widen and limit orders matter more than the expense ratio suggests.
• The decarbonization rules reshape sector and stock weights versus a market-cap MSCI USA portfolio. That tilt is the point, not a side effect.

• USCL Trading is thin for a fund this size, so spreads can widen. Limit orders are the standard tool here.
• Climate scoring reshapes the sector and name mix, so results can diverge from a plain US large-cap index in either direction.
• Launched in 2023, so its history is short next to the older ESG funds it competes with.

Full PABU profile⁠

Full USCL profile⁠