BlackRock Inc. has just cut costs across a handful of ETFs — including the biggest bond fund in the industry — as big issuers ramp up the famous fee war across the $7 trillion U.S. marketplace.

In Securities and Exchange Commission filings Thursday after the market close, the world’s largest issuer of exchange-traded funds reduced the expense ratio on the $85 billion iShares Core U.S. Aggregate Bond ETF (ticker AGG) to 0.03% from 0.04%. 

It also took an ax to expenses on two stock ETFs, previously known as the $1.26 billion iShares MSCI USA Multifactor ETF (ticker LRGF) and the $911 million iShares MSCI International Multifactor ETF (ticker INTF). It cut fees on the former to 0.08% from 0.2%, and to 0.15% for INTF, from 0.3%.

Read more: BNN Bloomberg