IYT vs VIOO: Holdings Overlap
IYTiShares U.S. Transportation ETF
iShares · 44 holdings · $2.3B · as of 2026-04-30
VIOOVanguard S&P Small-cap 600 Index Fund
Vanguard · 603 holdings · $4.4B · as of 2026-05-31
Holdings snapshots are 31 days apart (IYT: 2026-04-30, VIOO: 2026-05-31). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are IYT and VIOO?
iShares U.S. Transportation ETF (IYT, by iShares) holds 44 positions; Vanguard S&P Small-cap 600 Index Fund (VIOO, by Vanguard) holds 603. They have 14 holdings in common, and by portfolio weight the two funds are 2.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 2.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 14IYT holds 44 · VIOO holds 603
- Weight in Shared Holdings
- IYT 5%·VIOO 2%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 IYT
30 of 44 positions (95.4% of the fund) are not held by VIOO.
Sector Breakdown
| Sector | IYT | VIOO |
|---|---|---|
| Industrials | 99.9% | 17.2% |
| Financials | 0.0% | 17.6% |
| Information Technology | 0.0% | 15.9% |
| Consumer Discretionary | 0.0% | 12.9% |
| Health Care | 0.0% | 11.0% |
| Other Sectors | 0.0% | 25.2% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IYT | +0.1% | +17.7% | +28.2% | +11.7% | +8.0% | +10.7% | 0.90% |
| VIOO | +2.4% | +24.4% | +36.3% | +14.6% | +7.7% | +10.9% | 1.09% |
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 IYT vs VIOO →
Shared Holdings(14)
The top 10 shared positions account for 93% of the overlap, led by MATX, LYFT and RXO.
 MATXMatson Inc COM | 0.78% | 0.33% | 0.33% |
|---|---|---|---|
 LYFTLyft, Inc., Class A | 0.81% | 0.33% | 0.33% |
 RXORXO Inc. COMMON STOCK | 0.47% | 0.25% | 0.25% |
 SKYWSkywest Inc COM | 0.47% | 0.20% | 0.20% |
 ARCBArcbest Corporation COM | 0.41% | 0.18% | 0.18% |
 HUBGHub Group, Inc., Class A | 0.38% | 0.15% | 0.15% |
 WERNWerner Enterprises Inc. COM | 0.32% | 0.15% | 0.15% |
 ALGTAllegiant Travel Company COM | 0.15% | 0.12% | 0.12% |
 SNDRSchneider National, Inc., Class B | 0.22% | 0.10% | 0.10% |
 JBLUJetBlue Airways Corporation COM | 0.20% | 0.09% | 0.09% |
 MRTNMarten Transport Ltd. COM | 0.12% | 0.06% | 0.06% |
 HTLDHeartland Express Inc. COM | 0.09% | 0.04% | 0.04% |
 HTZHertz Global Holdings Inc. COM NEW | 0.11% | 0.04% | 0.04% |
 FWRDForward Air Corp. COM | 0.07% | 0.01% | 0.01% |
Frequently Asked Questions
How much do IYT and VIOO overlap?
IYT and VIOO overlap by 2.0% of portfolio weight. They share 14 holdings (IYT holds 44 positions and VIOO holds 603), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IYT and VIOO?
The two portfolios are 2.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of IYT and VIOO?
The largest positions held by both funds are MATX, LYFT, RXO, SKYW and ARCB. Together the top 10 shared positions account for 93% of the total overlap.
What does IYT own that VIOO doesn't?
30 positions (95.4% of IYT) are unique to IYT, led by UNP, UBER and FDX. In the other direction, 589 positions (97.7% of VIOO) are unique to VIOO.