IWO is a Small & Mid-Cap ETF from iShares holding 1101 positions as of Mar 31, 2026, with $14.8B in assets and a 0.24% net expense ratio. Its largest positions are BE (2.0%), FN (1.3%) and CRDO (1.0%); the top 10 holdings account for 10.0% of the portfolio. By sector it leans Industrials (23.7%) and Health Care (23.1%). It yields 0.42% on a trailing-12-month basis.
- Issuer
- iShares
- Holdings
- 110113.7% cash, collateral & derivative positions excluded
- Net Assets
- $14.8BETF assets as of 2026-08-10
- Expense Ratio
- 0.24%per latest SEC prospectus filing
- TTM Yield
- 0.42%trailing 12-month distributions
Performance
- 1M
- +1.2%
- YTD
- +21.0%
- 1Y
- +34.7%
- 3Y (ann.)
- +17.5%
- 5Y (ann.)
- +5.9%
- 10Y (ann.)
- +11.0%
A $10,000 investment 10 years ago would be worth $28,445 today at the 10Y annualized rate. This is a backward-looking illustration, not a forecast. Project its future growth →
Total returns including dividends as of 2026-08-07. 3Y/5Y/10Y annualized. Past performance does not predict future results.
Sector Breakdown
| Industrials | 23.7% |
|---|---|
| Health Care | 23.1% |
| Information Technology | 19.0% |
| Financials | 8.6% |
| Consumer Discretionary | 7.3% |
| Other Sectors | 14.1% |
| Unclassified | 4.0% |
We could not classify 4% of portfolio weight. It is shown separately as “Unclassified”, not lumped into a sector.
Top 25 Holdings
| # | Holding | Weight |
|---|---|---|
| 1 |  BEBloom Energy Corp., Class A | 1.99% |
| 2 |  FNFabrinet | 1.26% |
| 3 |  CRDOCredo Technology Group Holding Ltd. | 1.02% |
| 4 |  NXTNextpower, Inc., Class A | 0.94% |
| 5 |  KTOSKratos Defense & Security Solutions, Inc. | 0.86% |
| 6 |  AEISAdvanced Energy Industries, Inc. | 0.82% |
| 7 |  STRLSterling Infrastructure, Inc. | 0.81% |
| 8 |  BBIOBridgebio Pharma, Inc. | 0.79% |
| 9 |  GHGuardant Health, Inc. | 0.77% |
| 10 |  MODModine Manufacturing Co. | 0.76% |
| 11 |  ENSGEnsign Group, Inc. (The) | 0.76% |
| 12 |  IONQIonQ, Inc. | 0.67% |
| 13 |  DYDycom Industries, Inc. | 0.66% |
| 14 |  SPXCSPX Technologies, Inc. | 0.65% |
| 15 |  CDECoeur Mining, Inc. | 0.64% |
| 16 | Chart Industries, Inc. | 0.63% |
| 17 |  RMBSRambus, Inc. | 0.62% |
| 18 |  MDGLMadrigal Pharmaceuticals, Inc. | 0.60% |
| 19 |  ARWRArrowhead Pharmaceuticals, Inc. | 0.57% |
| 20 |  MOG-AMoog, Inc., Class A | 0.55% |
| 21 |  WTSWatts Water Technologies, Inc., Class A | 0.53% |
| 22 |  IDCCInterDigital, Inc. | 0.52% |
| 23 |  SITMSiTime Corp. | 0.52% |
| 24 |  VIAVViavi Solutions, Inc. | 0.51% |
| 25 |  PLPlanet Labs PBC, Class A | 0.51% |
Showing the top 25 of 1101 holdings. See the full IWO holdings list →
IWO alternatives
The closest Small & Mid-Cap ETFs to IWO by portfolio overlap — the share of weight both funds hold in the same securities.
| Fund | Overlap | Expense | Assets | |
|---|---|---|---|---|
 VTWOVanguard Russell 2000 Index Fund | 58% | 0.06%cheaper | $17.4B | Compare → |
 IWMiShares Russell 2000 ETF | 56% | 0.19%cheaper | $82.2B | Compare → |
 IJRiShares Core S&P Small-Cap ETF | 38% | 0.06%cheaper | $113.4B | Compare → |
 SCHASchwab U.S. Small-Cap ETF | 38% | 0.04%cheaper | $23.3B | Compare → |
 VIOOVanguard S&P Small-cap 600 Index Fund | 37% | 0.07%cheaper | $4.4B | Compare → |
 VIOGVanguard S&P Small-cap 600 Growth Index Fund | 36% | 0.1%cheaper | $1.1B | Compare → |
 SPSMState Street® SPDR® Portfolio S&P 600™ Small Cap ETF | 36% | 0.03%cheaper | $17.3B | Compare → |
 IJTiShares S&P Small-Cap 600 Growth ETF | 36% | 0.18%cheaper | $8.5B | Compare → |
Frequently Asked Questions
What is IWO's expense ratio?
IWO has a net expense ratio of 0.24%, per its latest SEC prospectus filing. That works out to about $24 a year on a $10,000 investment.
How many holdings does IWO have?
IWO held 1101 positions as of Mar 31, 2026, per its latest official holdings data. Cash, collateral and derivative positions (13.7% of portfolio weight) are excluded from that count.
What are IWO's top 10 holdings?
IWO's largest positions are BE (2.0%), FN (1.3%), CRDO (1.0%), NXT (0.9%), KTOS (0.9%), AEIS (0.8%), STRL (0.8%), BBIO (0.8%), GH (0.8%), MOD (0.8%). Together they account for 10.0% of the portfolio.
What is IWO's dividend yield?
IWO yields 0.42% based on its trailing 12-month distributions, as of Aug 7, 2026.
How big is IWO?
IWO has $14.8B in assets as of Aug 10, 2026.
What are good alternatives to IWO?
By portfolio overlap, the closest Small & Mid-Cap ETFs to IWO are VTWO (58% overlap), IWM (56% overlap), IJR (38% overlap). Overlap measures the share of portfolio weight both funds hold in the same securities.