ETF comparison
OEF vs SPYM
Both US Large Cap.
iShares S&P 100 ETF · State Street SPDR Portfolio S&P 500 ETF
Holdings overlap
102 positions appear in both funds. Buying equal dollars of OEF and SPYM would leave roughly 71.6% 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
SPYM is 18 bps cheaper than OEF. On a $100,000 position that's about $180/yr more in fees for OEF.
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 OEF vs SPYM.
Top shared holdings
102 shared in total| # | Holding | In OEF | In SPYM | Overlap |
|---|---|---|---|---|
| 1 | NVIDIA CORP | 10.47% | 7.51% | 7.51% |
| 2 | APPLE INC | 9.18% | 6.59% | 6.59% |
| 3 | MICROSOFT CORP | 5.99% | 4.29% | 4.29% |
| 4 | AMAZON.COM INC | 5.04% | 3.62% | 3.62% |
| 5 | ALPHABET INC | 4.53% | 3.25% | 3.25% |
| 6 | BROADCOM INC | 3.86% | 2.77% | 2.77% |
| 7 | ALPHABET INC | 3.61% | 2.59% | 2.59% |
| 8 | MICRON TECHNOLOGY INC | 2.81% | 2.02% | 2.02% |
| 9 | META PLATFORMS INC | 2.67% | 1.92% | 1.92% |
| 10 | TESLA INC | 2.56% | 1.83% | 1.83% |
| 11 | ELI LILLY & COMPANY | 2.05% | 1.47% | 1.47% |
| 12 | ADVANCED MICRO DEVICES INC | 2.05% | 1.47% | 1.47% |
Only in OEF
0 totalEvery OEF position is also held by SPYM.
Only in SPYM
404 total- KLA Corp 0.61%
- Sandisk Corp 0.52%
- Palo Alto Networks Inc 0.43%
- Marvell Technology Inc 0.40%
- Western Digital Corp 0.34%
- Amphenol Corp 0.34%
- Seagate Technology Holdings PLC 0.34%
- Corning Inc 0.31%
- Crowdstrike Holdings Inc 0.30%
- Analog Devices Inc 0.30%
Related comparisons
More comparisons with OEF
- OEF vs IVV · iShares Core S&P 500 ETF 71.6%
- OEF vs VOO · Vanguard S&P 500 ETF 71.5%
- OEF vs SPY · State Street SPDR S&P 500 ETF Trust 71.3%
- OEF vs SCHX · Schwab U.S. Large-Cap ETF 69.5%
- OEF vs VONE · Vanguard Russell 1000 Index Fund ETF Shares 68.0%
- OEF vs FELC · Fidelity Enhanced Large Cap Core ETF 66.5%
More comparisons with SPYM
- SPYM vs AVUS · Avantis US Equity ETF 71.4%
- SPYM vs FELC · Fidelity Enhanced Large Cap Core ETF 67.4%
- SPYM vs SPYG · State Street SPDR Portfolio S&P 500 Growth ETF 66.3%
- SPYM vs IVW · iShares S&P 500 Growth ETF 66.3%
- SPYM vs VOOG · Vanguard S&P 500 Growth Index Fund ETF Shares 65.9%
- SPYM vs LRGF · iShares U.S. Equity Factor ETF 65.9%
Percentages are holdings overlap with the named fund.
Open OEF or SPYM 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.