SPMB vs VGIT: Holdings Overlap
SPMBState Street® SPDR® Portfolio Mortgage Backed Bond ETF
State Street (SPDR) · 2714 holdings · $7.0B · as of 2026-08-06
VGITVanguard Intermediate-term Treasury Index Fund
Vanguard · 103 holdings · $42.5B · as of 2026-05-31
Holdings snapshots are 67 days apart (SPMB: 2026-08-06, VGIT: 2026-05-31). 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 SPMB and VGIT?
State Street® SPDR® Portfolio Mortgage Backed Bond ETF (SPMB, by State Street (SPDR)) holds 2714 positions; Vanguard Intermediate-term Treasury Index Fund (VGIT, by Vanguard) holds 103. 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
- 0SPMB holds 2714 · VGIT holds 103
- Weight in Shared Holdings
- SPMB 0%·VGIT 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 SPMB
2714 of 2714 positions (98.5% of the fund) are not held by VGIT. Showing the top 30 by weight.
- FED HM LN PC POOL RQ0094 FR 02/56 FIXED 51.15%
- FNMA TBA 30 YR 5.5 SINGLE FAMILY MORTGAGE0.91%
- FNMA POOL MA4547 FN 02/52 FIXED 20.77%
- FNMA TBA 30 YR 5 SINGLE FAMILY MORTGAGE0.76%
- FED HM LN PC POOL RQ0041 FR 08/55 FIXED 60.74%
- FED HM LN PC POOL SD8212 FR 05/52 FIXED 2.50.60%
Only in VGIT
103 of 103 positions (98.7% of the fund) are not held by SPMB. Showing the top 30 by weight.
- U.S. Treasury Notes1.94%
- U.S. Treasury Notes1.92%
- U.S. Treasury Notes1.90%
- U.S. Treasury Notes1.89%
- U.S. Treasury Notes1.89%
- U.S. Treasury Notes1.87%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SPMB | -0.1% | +0.5% | +3.9% | +4.7% | +0.2% | +1.2% | 4.15% |
| VGIT | +0.0% | -0.3% | +1.7% | +3.8% | -0.1% | +1.2% | 3.89% |
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 SPMB vs VGIT →
Shared Holdings(0)
These two funds have no holdings in common.
Frequently Asked Questions
How much do SPMB and VGIT overlap?
SPMB and VGIT overlap by 0.0% of portfolio weight. They share 0 holdings (SPMB holds 2714 positions and VGIT holds 103), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SPMB and VGIT?
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 SPMB own that VGIT doesn't?
2714 positions (98.5% of SPMB) are unique to SPMB, led by FED HM LN PC POOL RQ0094 FR 02/56 FIXED 5, FNMA TBA 30 YR 5.5 SINGLE FAMILY MORTGAGE and FNMA POOL MA4547 FN 02/52 FIXED 2. In the other direction, 103 positions (98.7% of VGIT) are unique to VGIT.