SPMD vs SPY: Holdings Overlap
SPMDState Street® SPDR® Portfolio S&P 400™ Mid Cap ETF
State Street (SPDR) · 399 holdings · $18.5B · as of 2026-08-06
SPYState Street® SPDR® S&P 500® ETF Trust
State Street (SPDR) · 504 holdings · $812.0B · as of 2026-08-06
How similar are SPMD and SPY?
State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF (SPMD, by State Street (SPDR)) holds 399 positions; State Street® SPDR® S&P 500® ETF Trust (SPY, by State Street (SPDR)) holds 504. They have 0 holdings in common, and by portfolio weight the two funds are 0.0% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.0%Sum of the smaller weight of each shared holding
- Shared Holdings
- 0SPMD holds 399 · SPY holds 504
- Weight in Shared Holdings
- SPMD 0%·SPY 0%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 SPMD
399 of 399 positions (105.7% of the fund) are not held by SPY. Showing the top 30 by weight.
Sector Breakdown
| Sector | SPMD | SPY |
|---|---|---|
| Information Technology | 15.7% | 37.6% |
| Industrials | 26.0% | 8.8% |
| Financials | 16.1% | 12.3% |
| Consumer Discretionary | 11.7% | 9.3% |
| Health Care | 10.3% | 8.9% |
| Other Sectors | 25.8% | 23.1% |
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 |
|---|---|---|---|---|---|---|---|
| SPMD | +3.1% | +18.5% | +26.0% | +14.6% | +9.1% | +11.3% | 1.19% |
| SPY | +3.4% | +14.0% | +23.7% | +21.2% | +13.3% | +15.3% | 0.97% |
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 SPMD vs SPY →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do SPMD and SPY overlap?
SPMD and SPY overlap by 0.0% of portfolio weight. They share 0 holdings (SPMD holds 399 positions and SPY holds 504), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPMD and SPY?
The two portfolios are 0.0% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What does SPMD own that SPY doesn't?
399 positions (105.7% of SPMD) are unique to SPMD, led by ATI, TWLO and ILMN. In the other direction, 504 positions (99.9% of SPY) are unique to SPY.