ETF comparison
IUSG vs SPY
US Large Cap Growth vs US Large Cap.
iShares Core S&P U.S. Growth ETF · State Street SPDR S&P 500 ETF Trust
Holdings overlap
140 positions appear in both funds. Buying equal dollars of IUSG and SPY would leave roughly 61.3% 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
IUSG is 5 bps cheaper than SPY. On a $100,000 position that's about $54/yr more in fees for SPY.
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 IUSG vs SPY.
Top shared holdings
140 shared in total| # | Holding | In IUSG | In SPY | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA CORP | 12.95% | 7.30% | 7.30% |
| 2 | MICROSOFT CORP | 7.41% | 6.22% | 6.22% |
| 3 | APPLE INC | 5.68% | 7.69% | 5.68% |
| 4 | AMAZON.COM INC | 3.31% | 3.94% | 3.31% |
| 5 | ALPHABET INC | 5.60% | 2.56% | 2.56% |
| 6 | BROADCOM INC | 4.78% | 2.33% | 2.33% |
| 7 | META PLATFORMS INC | 3.31% | 2.09% | 2.09% |
| 8 | ALPHABET INC | 4.46% | 2.06% | 2.06% |
| 9 | ELI LILLY & COMPANY | 2.54% | 1.71% | 1.71% |
| 10 | TESLA INC | 1.96% | 1.64% | 1.64% |
| 11 | BERKSHIRE HATHAWAY INC | 2.45% | 1.63% | 1.63% |
| 12 | JP MORGAN CHASE & COMPANY | 1.59% | 1.41% | 1.41% |
Only in IUSG
250 total- SEAGATE TECHNOLOGY HOLDINGS PLC 0.37%
- ROYAL CARIBBEAN CRUISES LTD 0.21%
- FLEX LTD 0.16%
- JOHNSON CONTROLS INTERNATIONAL PLC 0.16%
- TRANE TECHNOLOGIES PLC 0.15%
- TE CONNECTIVITY PLC 0.11%
- CARNIVAL CORP LTD 0.10%
- CARPENTER TECHNOLOGY CORP 0.08%
- CURTISS-WRIGHT CORP 0.07%
- NVENT ELECTRIC PLC 0.07%
Only in SPY
364 total- EXXONMOBIL HOLDINGS CORP 1.05%
- WALMART INC 0.87%
- COSTCO WHOLESALE CORP 0.70%
- CHEVRON CORP 0.65%
- PROCTER + GAMBLE CO/THE 0.59%
- MERCK + CO. INC. 0.56%
- UNITEDHEALTH GROUP INC 0.55%
- HOME DEPOT INC 0.53%
- BANK OF AMERICA CORP 0.51%
- INTEL CORP 0.44%
Related comparisons
More comparisons with IUSG
More comparisons with SPY
- SPY vs FNDX · Schwab Fundamental U.S. Large Company ETF 61.0%
- SPY vs DYNF · iShares U.S. Equity Factor Rotation Active ETF 60.7%
- SPY vs VOOV · Vanguard S&P 500 Value Index Fund ETF Shares 60.5%
- SPY vs VONV · Vanguard Russell 1000 Value Index Fund ETF Shares 60.1%
- SPY vs IWD · iShares Russell 1000 Value ETF 57.7%
- SPY vs DLN · WisdomTree U.S. LargeCap Dividend Fund 57.4%
Percentages are holdings overlap with the named fund.
Open IUSG 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.