SPY vs XMMO: Holdings Overlap
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
XMMOInvesco S&P MidCap Momentum ETF
Invesco · 76 holdings · $7.2B · as of 2026-04-30
Holdings snapshots are 98 days apart (SPY: 2026-08-06, XMMO: 2026-04-30). 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 SPY and XMMO?
State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504 positions; Invesco S&P MidCap Momentum ETF (XMMO, by Invesco) holds 76. They have 1 holdings in common, and by portfolio weight the two funds are 0.1% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.1%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1SPY holds 504 · XMMO holds 76
- Weight in Shared Holdings
- SPY 0%·XMMO 3%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 SPY
503 of 504 positions (99.8% of the fund) are not held by XMMO. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPY | XMMO |
|---|---|---|
| Industrials | 8.8% | 40.3% |
| Information Technology | 37.6% | 15.0% |
| Financials | 12.3% | 3.8% |
| Communication Services | 9.7% | 1.5% |
| Consumer Discretionary | 9.3% | 6.1% |
| Other Sectors | 22.3% | 32.9% |
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.
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
| XMMO | +1.1% | +17.4% | +26.1% | +25.9% | +14.3% | +18.6% | 0.60% |
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 SPY vs XMMO →
Shared Holdings(1)
 FLEXFlex Ltd. COM USD0.01 | 0.07% | 2.56% | 0.07% |
|---|
Frequently Asked Questions
How much do SPY and XMMO overlap?
SPY and XMMO overlap by 0.1% of portfolio weight. They share 1 holdings (SPY holds 504 positions and XMMO holds 76), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPY and XMMO?
The two portfolios are 0.1% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of SPY and XMMO?
The largest positions held by both funds are FLEX. Together the top 1 shared positions account for 97% of the total overlap.
What does SPY own that XMMO doesn't?
503 positions (99.8% of SPY) are unique to SPY, led by NVDA, AAPL and MSFT. In the other direction, 75 positions (97.1% of XMMO) are unique to XMMO.