US ETF · ETF

ISHARES TR IWB

The iShares Russell 1000 ETF (IWB) is an exchange-traded fund that is based on the Russell 1000 index, a market-cap-weighted index of the 1000-largest US companies. IWB was launched on May 15, 2000 and is issued by BlackRock.

Exchange Traded Fund

Company profile

Business mix

  • IWB was launched on May 15, 2000 and is issued by BlackRock.
  • The fund gives investors equity / large blend exposure through a listed ETF structure.
  • It tracks the Russell 1000 index and is issued by BlackRock.
  • Portfolio breadth and cost are visible in 1009 holdings and a 0.15% expense ratio.

Current key questions

  • Does the fund's index exposure, fees, liquidity, and tracking quality fit the role investors expect it to play?
  • How concentrated is the portfolio by issuer, sector, country, factor, or duration risk?
  • Can flows, spreads, and market structure affect trading costs during volatile periods?
Holders 1 Current sample portfolio
Public mentions 0 Videos / interviews / letters

Current firm holders

Firm Weight Value Filing period
Gotham Asset Management Joel Greenblatt 0.1% $45.6M 2026-03-31

Recent trading changes over the last 4 quarters

Net buyers 1 Last 4 13F filing periods
Net reducers 0 Last 4 13F filing periods
Unchanged holders 0 Share count unchanged
Increase amount $42.8M Estimated from net added shares
Reduction amount $0 Estimated from net reduced shares
Net share change / base shares +1535.2% +119,974 / 7,815
Gotham Asset Management Joel Greenblatt 1 filing periods
13F 2026-03-31 Filed 2026-05-15
Major increase Shares 1535.2% 13F value change +$42.6M
Settlement As of 13F 2026-03-31 · Filed 2026-05-15
Base shares 7,815 Last 4 periods +119,974 (+1535.2%) Total shares 127,789 Value $45.6M

Recent mentions

No public mentions.