IWP vs VBK: Holdings Overlap
IWPiShares Russell Mid-Cap Growth ETF
iShares · 277 holdings · $20.5B · as of 2026-03-31
VBKVanguard Small-cap Growth Index Fund
Vanguard · 551 holdings · $24.3B · as of 2026-03-31
How similar are IWP and VBK?
iShares Russell Mid-Cap Growth ETF (IWP, by iShares) holds 277 positions; Vanguard Small-cap Growth Index Fund (VBK, by Vanguard) holds 551. They have 140 holdings in common, and by portfolio weight the two funds are 24.8% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 24.8%Sum of the smaller weight of each shared holding
- Shared Holdings
- 140IWP holds 277 · VBK holds 551
- Weight in Shared Holdings
- IWP 30%·VBK 40%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in IWP
137 of 277 positions (69.7% of the fund) are not held by VBK. Showing the top 30 by weight.
Sector Breakdown
| Sector | IWP | VBK |
|---|---|---|
| Industrials | 24.4% | 24.6% |
| Information Technology | 15.6% | 21.6% |
| Consumer Discretionary | 21.2% | 9.9% |
| Health Care | 14.9% | 16.1% |
| Financials | 8.5% | 6.1% |
| Other Sectors | 15.3% | 20.6% |
| Unclassified | 0.0% | 0.9% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (0% of IWP, 1% of VBK).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IWP | +1.5% | +5.4% | +3.1% | +14.6% | +5.1% | +12.1% | 0.34% |
| VBK | +1.8% | +19.6% | +29.4% | +16.6% | +5.3% | +11.4% | 0.42% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in IWP vs VBK →
Shared Holdings(140)
The top 10 shared positions account for 26% of the overlap, led by NTRA, FTAI and FIX.
 NTRANatera Inc. COM | 0.95% | 0.88% | 0.88% |
|---|---|---|---|
 FTAIFTAI Aviation Ltd COM USD0.01 | 0.90% | 0.84% | 0.84% |
 FIXComfort Systems USA Inc. COM | 1.73% | 0.81% | 0.81% |
 RKLBRocket Lab Corp. COM | 1.13% | 0.61% | 0.61% |
 ASTSAST SpaceMobile, Inc., Class A | 0.60% | 0.72% | 0.60% |
 INSMInsmed Inc COM PAR $.01 | 1.15% | 0.59% | 0.59% |
 PEverpure, Inc., Class A | 0.57% | 0.62% | 0.57% |
 ALABAstera Labs Inc COM | 0.51% | 0.53% | 0.51% |
 LIILennox International Inc. COM | 0.53% | 0.48% | 0.48% |
 DECKDeckers Outdoor Corp. COM | 0.52% | 0.47% | 0.47% |
 TPLTexas Pacific Land Corporation COM | 0.98% | 0.46% | 0.46% |
 TOSTToast, Inc., Class A | 0.44% | 0.44% | 0.44% |
 GWREGuidewire Software Inc COM | 0.46% | 0.42% | 0.42% |
 SGISomnigroup International Inc. COM | 0.54% | 0.42% | 0.42% |
 PENPenumbra Inc. COM | 0.45% | 0.41% | 0.41% |
 EMEEmcor Group Inc COM | 0.41% | 0.55% | 0.41% |
 NBIXNeurocrine Biosciences Inc COM | 0.39% | 0.44% | 0.39% |
 IONSIonis Pharmaceuticals, Inc. COM | 0.40% | 0.39% | 0.39% |
 LSCCLattice Semiconductor Corporation COM | 0.39% | 0.42% | 0.39% |
 DTDynatrace Inc COM NEW | 0.39% | 0.37% | 0.37% |
 TXRHTexas Roadhouse Inc COM | 0.39% | 0.36% | 0.36% |
 MEDPMedpace Holdings Inc. COM | 0.39% | 0.36% | 0.36% |
 BURLBurlington Stores Inc. COM | 0.74% | 0.34% | 0.34% |
 IOTSamsara, Inc., Class A | 0.37% | 0.34% | 0.34% |
 DKNGDraftKings, Inc., Class A | 0.37% | 0.34% | 0.34% |
Frequently Asked Questions
How much do IWP and VBK overlap?
IWP and VBK overlap by 24.8% of portfolio weight. They share 140 holdings (IWP holds 277 positions and VBK holds 551), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IWP and VBK?
The two portfolios are 24.8% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of IWP and VBK?
The largest positions held by both funds are NTRA, FTAI, FIX, RKLB and ASTS. Together the top 10 shared positions account for 26% of the total overlap.
What does IWP own that VBK doesn't?
137 positions (69.7% of IWP) are unique to IWP, led by VRT, HWM and RCL. In the other direction, 411 positions (59.4% of VBK) are unique to VBK.