IGLB vs AGG: Holdings Overlap
IGLBiShares 10+ Year Investment Grade Corporate Bond ETF
iShares · 3835 holdings · $2.9B · as of 2026-05-31
AGGiShares Core U.S. Aggregate Bond ETF
iShares · 13266 holdings · $137.7B · as of 2026-05-31
How similar are IGLB and AGG?
iShares 10+ Year Investment Grade Corporate Bond ETF (IGLB, by iShares) holds 3835 positions; iShares Core U.S. Aggregate Bond ETF (AGG, by iShares) holds 13266. They have 3091 holdings in common, and by portfolio weight the two funds are 7.9% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 7.9%Sum of the smaller weight of each shared holding
- Shared Holdings
- 3091IGLB holds 3835 · AGG holds 13266
- Weight in Shared Holdings
- IGLB 84%·AGG 8%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 IGLB
744 of 3835 positions (14.1% of the fund) are not held by AGG. Showing the top 30 by weight.
- Mars Inc0.17%
- QatarEnergy0.11%
- Saudi Arabian Oil Co0.10%
- Petronas Capital Ltd0.10%
- QatarEnergy0.10%
- Mars Inc0.10%
Only in AGG
10175 of 13266 positions (90.6% of the fund) are not held by IGLB. Showing the top 30 by weight.
- U.S. Treasury Notes0.42%
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.41%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.40%
- U.S. Treasury Notes0.39%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| IGLB | -1.6% | -1.5% | +0.9% | +4.3% | -2.9% | +1.6% | 5.41% |
| AGG | -0.3% | +0.0% | +2.4% | +4.2% | -0.2% | +1.4% | 4.04% |
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 IGLB vs AGG →
Shared Holdings(3091)
The top 10 shared positions account for 2% of the overlap, led by Anheuser-Busch Cos LLC / Anheuser-Busch InBev Worldwide Inc, CVS Health Corp and Comcast Corp.
| Anheuser-Busch Cos LLC / Anheuser-Busch InBev Worldwide Inc | 0.28% | 0.03% | 0.03% |
|---|---|---|---|
| CVS Health Corp | 0.25% | 0.02% | 0.02% |
| Comcast Corp | 0.02% | 0.03% | 0.02% |
| Goldman Sachs Group Inc/The | 0.20% | 0.02% | 0.02% |
| Pfizer Investment Enterprises Pte Ltd | 0.20% | 0.02% | 0.02% |
| Goldman Sachs Group Inc/The | 0.16% | 0.02% | 0.02% |
| Wells Fargo & Co | 0.18% | 0.02% | 0.02% |
| Boeing Co/The | 0.20% | 0.02% | 0.02% |
| Meta Platforms Inc | 0.20% | 0.02% | 0.02% |
| AT&T Inc | 0.17% | 0.02% | 0.02% |
| AT&T Inc | 0.17% | 0.02% | 0.02% |
| CVS Health Corp | 0.19% | 0.02% | 0.02% |
| AbbVie Inc | 0.16% | 0.01% | 0.01% |
| Bank of America Corp | 0.14% | 0.01% | 0.01% |
| Meta Platforms Inc | 0.17% | 0.01% | 0.01% |
| Oracle Corp | 0.16% | 0.01% | 0.01% |
| Amgen Inc | 0.14% | 0.01% | 0.01% |
| AT&T Inc | 0.13% | 0.01% | 0.01% |
| Microsoft Corp | 0.14% | 0.01% | 0.01% |
| Anheuser-Busch InBev Worldwide Inc | 0.15% | 0.01% | 0.01% |
| Microsoft Corp | 0.14% | 0.01% | 0.01% |
| Broadcom Inc | 0.09% | 0.01% | 0.01% |
| AT&T Inc | 0.14% | 0.01% | 0.01% |
| Oracle Corp | 0.10% | 0.01% | 0.01% |
| Oracle Corp | 0.10% | 0.01% | 0.01% |
Showing the top 250 of 3091 shared holdings by overlap weight.
Frequently Asked Questions
How much do IGLB and AGG overlap?
IGLB and AGG overlap by 7.9% of portfolio weight. They share 3091 holdings (IGLB holds 3835 positions and AGG holds 13266), based on each fund's latest SEC-reported holdings.
Is it redundant to own both IGLB and AGG?
The two portfolios are 7.9% 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 IGLB and AGG?
The largest positions held by both funds are Anheuser-Busch Cos LLC / Anheuser-Busch InBev Worldwide Inc, CVS Health Corp, Comcast Corp, Goldman Sachs Group Inc/The and Pfizer Investment Enterprises Pte Ltd. Together the top 10 shared positions account for 2% of the total overlap.
What does IGLB own that AGG doesn't?
744 positions (14.1% of IGLB) are unique to IGLB, led by Mars Inc, QatarEnergy and Saudi Arabian Oil Co. In the other direction, 10175 positions (90.6% of AGG) are unique to AGG.