ETF comparison
IWF vs SPY
US Large Cap Growth vs US Large Cap.
iShares Russell 1000 Growth ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
179 positions appear in both funds. Buying equal dollars of IWF and SPY would leave roughly 56.6% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
SPY is 9 bps cheaper than IWF. On a $100,000 position that's about $86/yr more in fees for IWF.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with IWF vs SPY.
Top shared holdings
179 shared in total| # | Holding | In IWF | In SPY | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA CORPORATION | 13.83% | 8.50% | 8.50% |
| 2 | APPLE INC. | 6.72% | 7.32% | 6.72% |
| 3 | MICROSOFT CORPORATION | 4.11% | 5.77% | 4.11% |
| 4 | ALPHABET INC. | 6.17% | 3.03% | 3.03% |
| 5 | BROADCOM INC. | 5.21% | 2.54% | 2.54% |
| 6 | ALPHABET INC. | 4.98% | 2.43% | 2.43% |
| 7 | META PLATFORMS, INC. | 3.00% | 2.41% | 2.41% |
| 8 | MICRON TECHNOLOGY, INC. | 3.86% | 1.82% | 1.82% |
| 9 | TESLA, INC. | 3.64% | 1.57% | 1.57% |
| 10 | ADVANCED MICRO DEVICES, INC. | 2.80% | 1.55% | 1.55% |
| 11 | ELI LILLY AND COMPANY | 2.84% | 1.37% | 1.37% |
| 12 | VISA INC. | 1.68% | 0.92% | 0.92% |
Only in IWF
189 total- SNOWFLAKE INC. 0.25%
- SPACE EXPLORATION TECHNOLOGIES CORP. 0.24%
- CLOUDFLARE, INC. 0.23%
- Astera Labs, Inc 0.22%
- SPOTIFY TECHNOLOGY S.A. 0.21%
- ROCKET LAB CORPORATION 0.16%
- Nu Holdings Ltd. 0.14%
- Credo Technology Group Holding Ltd 0.13%
- ALNYLAM PHARMACEUTICALS, INC. 0.12%
- NATERA, INC. 0.11%
Only in SPY
326 total- BERKSHIRE HATHAWAY INC CL B 1.41%
- JPMORGAN CHASE + CO 1.33%
- EXXONMOBIL HOLDINGS CORP 1.01%
- JOHNSON + JOHNSON 0.93%
- INTEL CORP 0.89%
- CISCO SYSTEMS INC 0.66%
- CHEVRON CORP 0.61%
- MERCK + CO. INC. 0.53%
- PROCTER + GAMBLE CO/THE 0.51%
- UNITEDHEALTH GROUP INC 0.50%
Related comparisons
More comparisons with IWF
- IWF vs SCHX · Schwab U.S. Large-Cap ETF 56.4%
- IWF vs VONE · Vanguard Russell 1000 Index Fund ETF Shares 56.3%
- IWF vs SCHK · Schwab 1000 ETF 56.2%
- IWF vs BBUS · JPMorgan BetaBuilders U.S. Equity ETF 55.0%
- IWF vs ESGU · iShares ESG Aware MSCI USA ETF 54.9%
- IWF vs SPTM · State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 54.8%
More comparisons with SPY
- SPY vs DLN · WisdomTree U.S. LargeCap Dividend Fund 55.8%
- SPY vs VOOV · Vanguard S&P 500 Value Index Fund ETF Shares 55.6%
- SPY vs SCHG · Schwab U.S. Large-Cap Growth ETF 55.2%
- SPY vs QQQM · Invesco NASDAQ 100 ETF 54.9%
- SPY vs IWD · iShares Russell 1000 Value ETF 54.8%
- SPY vs IWY · iShares Russell Top 200 Growth ETF 54.4%
Percentages are holdings overlap with the named fund.
Open IWF or SPY at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.