ETF comparison
TLT vs VMBS
US Treasury (Long) vs US Aggregate Bond.
iShares 20+ Year Treasury Bond ETF · Vanguard Mortgage-Backed Securities Index Fund ETF Shares
Holdings overlap
0 positions appear in both funds. Buying equal dollars of TLT and VMBS would leave roughly 0.0% 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
VMBS is 12 bps cheaper than TLT. On a $100,000 position that's about $120/yr more in fees for TLT.
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 TLT vs VMBS.
Top shared holdings
0 shared in totalNo shared holdings between these funds.
Only in TLT
46 total- United States of America 4.58%
- United States of America 4.50%
- United States of America 4.46%
- United States of America 4.40%
- United States of America 4.15%
- United States of America 4.04%
- United States of America 4.03%
- United States of America 3.95%
- United States of America 3.94%
- United States of America 3.86%
Only in VMBS
5,112 total- Fannie Mae or Freddie Mac 0.52%
- Ginnie Mae II Pool 0.36%
- Ginnie Mae II Pool 0.32%
- Ginnie Mae II Pool 0.31%
- Fannie Mae Pool 0.29%
- Ginnie Mae II Pool 0.29%
- Ginnie Mae II Pool 0.29%
- Ginnie Mae II Pool 0.28%
- Freddie Mac Pool 0.27%
- Freddie Mac Pool 0.27%
Related comparisons
More comparisons with TLT
- TLT vs VOO · Vanguard S&P 500 ETF 0.0%
- TLT vs VTC · Vanguard Total Corporate Bond ETF ETF Shares 0.0%
- TLT vs VTEB · Vanguard Tax-Exempt Bond Index Fund ETF Shares 0.0%
- TLT vs VTI · Vanguard Morningstar Total Stock Market ETF 0.0%
- TLT vs VTIP · Vanguard Short-Term Inflation-Protected Securities Index Fund ETF Shares 0.0%
- TLT vs VUSB · Vanguard Ultra-Short Bond ETF 0.0%
More comparisons with VMBS
- VMBS vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 0.0%
- VMBS vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 0.0%
- VMBS vs VTIP · Vanguard Short-Term Inflation-Protected Securities Index Fund ETF Shares 0.0%
- VMBS vs VUSB · Vanguard Ultra-Short Bond ETF 0.0%
- VMBS vs SPMB · State Street SPDR Portfolio Mortgage Backed Bond ETF 21.2%
- VMBS vs MBB · iShares MBS ETF 17.2%
Percentages are holdings overlap with the named fund.
Open TLT or VMBS 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.