TLT vs BLV: Holdings Overlap
TLTiShares 20+ Year Treasury Bond ETF
iShares · 46 holdings · $41.6B · as of 2026-05-31
BLVVanguard Long-term Bond Index Fund
Vanguard · 3013 holdings · $5.8B · as of 2026-03-31
Holdings snapshots are 61 days apart (TLT: 2026-05-31, BLV: 2026-03-31). 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 TLT and BLV?
iShares 20+ Year Treasury Bond ETF (TLT, by iShares) holds 46 positions; Vanguard Long-term Bond Index Fund (BLV, by Vanguard) holds 3013. They have 45 holdings in common, and by portfolio weight the two funds are 28.2% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 28.2%Sum of the smaller weight of each shared holding
- Shared Holdings
- 45TLT holds 46 · BLV holds 3013
- Weight in Shared Holdings
- TLT 98%·BLV 31%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 TLT
1 of 46 positions (0.5% of the fund) are not held by BLV.
- U.S. Treasury Bonds0.54%
Only in BLV
2968 of 3013 positions (67.7% of the fund) are not held by TLT. Showing the top 30 by weight.
- U.S. Treasury Bonds0.93%
- U.S. Treasury Bonds0.87%
- U.S. Treasury Bonds0.86%
- U.S. Treasury Bonds0.81%
- U.S. Treasury Bonds0.80%
- U.S. Treasury Bonds0.77%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| TLT | -1.7% | -2.5% | -1.3% | -0.6% | -7.8% | -2.3% | 4.72% |
| BLV | -1.5% | -1.9% | +0.2% | +2.5% | -4.7% | +0.3% | 4.94% |
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 TLT vs BLV →
Shared Holdings(45)
The top 10 shared positions account for 40% of the overlap, led by U.S. Treasury Bonds, U.S. Treasury Bonds and U.S. Treasury Bonds.
| U.S. Treasury Bonds | 4.46% | 1.23% | 1.23% |
|---|---|---|---|
| U.S. Treasury Bonds | 2.90% | 1.21% | 1.21% |
| U.S. Treasury Bonds | 4.50% | 1.18% | 1.18% |
| U.S. Treasury Bonds | 3.46% | 1.18% | 1.18% |
| U.S. Treasury Bonds | 4.40% | 1.18% | 1.18% |
| U.S. Treasury Bonds | 4.03% | 1.14% | 1.14% |
| U.S. Treasury Bonds | 3.94% | 1.13% | 1.13% |
| U.S. Treasury Bonds | 3.80% | 1.10% | 1.10% |
| U.S. Treasury Bonds | 2.54% | 0.98% | 0.98% |
| U.S. Treasury Bonds | 4.58% | 0.97% | 0.97% |
| U.S. Treasury Bonds | 3.62% | 0.93% | 0.93% |
| U.S. Treasury Bonds | 1.01% | 0.82% | 0.82% |
| U.S. Treasury Bonds | 4.15% | 0.80% | 0.80% |
| U.S. Treasury Bonds | 3.86% | 0.79% | 0.79% |
| U.S. Treasury Bonds | 2.97% | 0.79% | 0.79% |
| U.S. Treasury Bonds | 1.03% | 0.77% | 0.77% |
| U.S. Treasury Bonds | 1.33% | 0.73% | 0.73% |
| U.S. Treasury Bonds | 1.09% | 0.71% | 0.71% |
| U.S. Treasury Bonds | 2.73% | 0.70% | 0.70% |
| U.S. Treasury Bonds | 2.81% | 0.66% | 0.66% |
| U.S. Treasury Bonds | 4.04% | 0.65% | 0.65% |
| U.S. Treasury Bonds | 2.35% | 0.64% | 0.64% |
| U.S. Treasury Bonds | 2.42% | 0.61% | 0.61% |
| U.S. Treasury Bonds | 3.95% | 0.60% | 0.60% |
| U.S. Treasury Bonds | 2.73% | 0.60% | 0.60% |
Frequently Asked Questions
How much do TLT and BLV overlap?
TLT and BLV overlap by 28.2% of portfolio weight. They share 45 holdings (TLT holds 46 positions and BLV holds 3013), based on each fund's latest SEC-reported holdings.
Is it redundant to own both TLT and BLV?
The two portfolios are 28.2% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of TLT and BLV?
The largest positions held by both funds are U.S. Treasury Bonds, U.S. Treasury Bonds, U.S. Treasury Bonds, U.S. Treasury Bonds and U.S. Treasury Bonds. Together the top 10 shared positions account for 40% of the total overlap.
What does TLT own that BLV doesn't?
1 positions (0.5% of TLT) are unique to TLT, led by U.S. Treasury Bonds. In the other direction, 2968 positions (67.7% of BLV) are unique to BLV.