Investor Checklist
- Issuer and listing venue: BlackRock, NYSEARCA.
- Launch date and fee: May 22, 2000, 0.19%.
- Portfolio size and concentration: 1,920 holdings, with the top 10 at 7.25%.
- Primary exposure: Equity; Small Blend; North America; Index: Russell 2000
- Best use case: U.S. size diversification sleeve that can reduce reliance on mega-cap stocks.
- Main risk to respect: The key risk is that IWM's stated diversification may not protect investors if its dominant exposure, largest holdings, or main macro factor reverses. Current top-10 concentration is 7.25%.
IWM Investor Snapshot
IWM is iShares Russell 2000 ETF, issued by BlackRock. It is best understood as a size diversification sleeve away from mega-cap stocks. The fund has $75.37B in AUM, charges 0.19%, holds 1,920 holdings, and has top-10 concentration of 7.25%. Its largest listed holdings include Bloom Energy Corporation (1.77%), Credo Technology Group Holding Ltd (0.85%), Fabrinet (0.76%).
IWM ETF Facts: Launch Date, Issuer, Fee, Assets, And Strategy
IWM is iShares Russell 2000 ETF. Issuer: BlackRock. Exchange: NYSEARCA. Inception: May 22, 2000. Expense ratio: 0.19%. AUM: $75.37B. Mandate or tracked index: Russell 2000
IWM Top Holdings And Concentration
Holdings snapshot: May 19, 2026. IWM has 1,920 holdings. The top 10 positions account for 7.25%, so investors should read the fund through its largest holdings first rather than assuming every ETF is equally diversified.
- $BE - Bloom Energy Corporation: 1.77%
- $CRDO - Credo Technology Group Holding Ltd: 0.85%
- $FN - Fabrinet: 0.76%
- $STRL - Sterling Infrastructure, Inc.: 0.67%
- $NXT - Nextpower Inc.: 0.58%
- $SATS - EchoStar Corporation: 0.57%
- CDE.NE - COEUR MINING INC: 0.53%
- $IONQ - IonQ, Inc.: 0.52%
- $TTMI - TTM Technologies, Inc.: 0.51%
- $SITM - SiTime Corporation: 0.48%
IWM Sector And Industry Exposure
IWM exposure summary: Equity; Small Blend; North America; Index: Russell 2000. These exposures explain what investors actually own after buying the ETF. A broad fund is usually driven by sector weights and mega-cap leadership; a sector or thematic fund is driven by the industry cycle; a bond or alternative asset fund is driven by macro variables rather than company earnings.
- Financials: 18.84%. Sector weight from the latest public ETF holdings snapshot.
- Industrials: 17.57%. Sector weight from the latest public ETF holdings snapshot.
- Health Care: 15.44%. Sector weight from the latest public ETF holdings snapshot.
- Technology: 14.37%. Sector weight from the latest public ETF holdings snapshot.
- Consumer Discretionary: 10.47%. Sector weight from the latest public ETF holdings snapshot.
- Real Estate: 5.91%. Sector weight from the latest public ETF holdings snapshot.
- Energy: 4.64%. Sector weight from the latest public ETF holdings snapshot.
- Materials: 4.09%. Sector weight from the latest public ETF holdings snapshot.
- Utilities: 3.19%. Sector weight from the latest public ETF holdings snapshot.
- Communication Services: 2.37%. Sector weight from the latest public ETF holdings snapshot.
IWM Fees, Liquidity, And Product Structure
IWM trades on NYSEARCA. The stated expense ratio is 0.19%, and current AUM is $75.37B. Lower fees matter most for long holding periods, while AUM and trading depth matter when investors place larger orders or need reliable execution during volatile sessions.
IWM Return Drivers: What Has To Go Right
The return drivers for IWM are domestic earnings breadth, credit conditions, rates, refinancing costs, and small-cap risk appetite. That matters because two ETFs can both look diversified but respond to very different conditions. For IWM, investors should compare price performance with the fund's dominant exposure, the largest holdings, and the macro factor behind the category.
IWM Current Market Theme
iShares Russell 2000 ETF is a Small Blend ETF with $75.37B in AUM, 1,920 holdings, top-10 concentration of 7.25%, and a leading exposure to Financials (18.84%). The largest holdings include Bloom Energy Corporation (1.77%), Credo Technology Group Holding Ltd (0.85%), Fabrinet (0.76%).
When IWM Tends To Work
IWM tends to work when domestic earnings breadth, credit conditions, rates, refinancing costs, and small-cap risk appetite are moving in the fund's favor.
IWM Portfolio Role: Core Holding Or Satellite Position?
U.S. size diversification sleeve that can reduce reliance on mega-cap stocks. In practical portfolio terms, IWM should be sized according to whether it is replacing broad market exposure, adding a factor tilt, expressing a sector view, or hedging a macro risk. The more concentrated the fund, the less it should be treated as a complete portfolio by itself.
IWM Key Risks Investors Should Watch
The main risks are specific enough to check before buying, not generic ETF fine print.
- Market risk: IWM can fall with its asset class even when the fund structure works as designed.
- Concentration risk: top-10 weight is 7.25%, which is low for an ETF in this category.
- Exposure risk: the main exposure is Equity; Small Blend; North America; Index: Russell 2000
- Fee and trading risk: expense ratio is 0.19%; investors should still check spread, volume, and premium/discount before large orders.
- Thesis risk: The key risk is that IWM's stated diversification may not protect investors if its dominant exposure, largest holdings, or main macro factor reverses. Current top-10 concentration is 7.25%.
Who IWM Is Suitable For
IWM can be useful, but the right investor depends on time horizon, existing overlap, and drawdown tolerance.
- More suitable for investors who need a size diversification sleeve away from mega-cap stocks.
- More suitable for investors who understand that IWM's top holdings and sector exposures can dominate short-term returns.
- Less suitable for investors who need stable cash income unless the fund's underlying asset class is explicitly income-oriented.
- Less suitable for investors already heavily exposed to the same largest holdings or same macro factor.
IWM What To Monitor Next
IWM should be reviewed after new holdings files, major market moves, or category-specific catalysts. The most important checks are:
- Holdings as of May 19, 2026.
- AUM: $75.37B.
- Expense ratio: 0.19%.
- Top-10 weight: 7.25%.
IWM Action Reference
A useful ETF article should end with a decision framework. For IWM, the practical read is:
- Core-index investor: use as a satellite rather than a replacement for broad diversification.
- Theme investor: check whether the latest holdings still match the investment thesis.
- Risk-control investor: cap position size because sector/factor ETFs can underperform for long stretches.
IWM Bottom Line
IWM is not just a fund name. It is a package of exposures: iShares Russell 2000 ETF; issuer BlackRock; fee 0.19%; AUM $75.37B; 1,920 holdings; top-10 weight 7.25%; holdings date May 19, 2026. The investment case is strongest when the fund's largest holdings, main exposure, and category-level return drivers all point in the same direction.
Common Questions
What is IWM?
IWM is iShares Russell 2000 ETF, a Small Blend issued by BlackRock.
When did IWM launch?
IWM's inception date is May 22, 2000.
What is the IWM expense ratio?
IWM charges an expense ratio of 0.19%.
What does IWM hold?
IWM holds 1,920 holdings. Major holdings include Bloom Energy Corporation (1.77%), Credo Technology Group Holding Ltd (0.85%), Fabrinet (0.76%), Sterling Infrastructure, Inc. (0.67%), Nextpower Inc. (0.58%).
Is IWM diversified?
IWM's top 10 holdings are 7.25%.
Who might use IWM?
U.S. size diversification sleeve that can reduce reliance on mega-cap stocks.