Investing · ETF deep dive
XSB iShares Core Canadian Short Term Bond Index ETF
The iShares short fund: 2.8-year duration, a heavier federal core, and a 2000 vintage — the conservative bond sleeve, executed plainly.
Best for: Rate-averse investors in the iShares ecosystem
Pros
- Duration 2.82 — the same calm as VSB
- 0.10% MER undercuts VSB by two basis points
- More federal weight (51.9%) than its Vanguard twin
Cons
- Slightly lower YTM than VSB (3.21% vs 3.3%)
- More BBB (13.4%) in the credit tail
- Same GIC competition at this duration
What's inside XSB
| Underlying fund | Weight |
|---|---|
| Credit quality: AAA 54.1% · AA 14.4% · A 17.8% · BBB 13.4% | 100.0% |
| Top issuers: Gov of Canada 38.6%, Canada Housing Trust 10.2%, Ontario 6.5% | 55.3% |
Federal 51.9% · Provincial 15.9% · Corporate ~31% (financials 17.8%) (Provider sector table, Jun 9, 2026) · holdings as of June 9, 2026 (743 bonds)
The deep dive
XSB is VSB with iShares plumbing: the FTSE Short Term index, 743 bonds, a majority-AAA book anchored by the federal government at 38.6%. Duration 2.82 years, YTM 3.21%, 0.10%. Like XBB, it carries a 2000 inception with BlackRock’s footnote that the pre-2005 mandate differed (a single 5-year GoC bond) — modern history is what counts.
Everything said about VSB applies: short duration is the 2022 lesson institutionalized, and the live GIC rates are the comparison every short-bond buyer should run before clicking buy.
The rest of the field
The rest of the field, one line each:
- ZAG — the $12.8B aggregate, 0.09% MER
- XBB — same index as ZAG, since 2000
- VAB — Bloomberg float-adjusted aggregate
- ZDB — the tax-aware aggregate for taxable accounts
- VSB — short-term (2.7yr duration)
- ZFL — long federal — 17yr duration, the rate bet
Frequently asked questions
What does XSB hold?
XSB holds 743 short-term investment-grade Canadian bonds — led by Credit quality: AAA 54.1% · AA 14.4% · A 17.8% · BBB 13.4% at 100.0%, Top issuers: Gov of Canada 38.6%, Canada Housing Trust 10.2%, Ontario 6.5% at 55.3% (as of June 9, 2026 (743 bonds)). Credit and sector mix: Federal 51.9% · Provincial 15.9% · Corporate ~31% (financials 17.8%) (provider sector table, jun 9, 2026). Weights drift between rebalances — ftse canada short term overall bond index · duration 2.82 yrs.
What does XSB cost?
Currently 0.09% management fee; 0.10% published MER (page as of Jun 9, 2026). Canadian aggregate bond ETFs now cost just 0.09%–0.10% — specialty rungs more (ZFL 0.22%) — see the full comparison. At bond-level expected returns, every basis point matters: the MER calculator shows why.
Which account should hold XSB — and should it be a GIC instead?
Bond interest is fully taxed at your marginal rate, the least favourable treatment there is — so bond ETFs belong in an RRSP, RRIF or TFSA first (the deliberate exception is ZDB, engineered for taxable accounts). And before buying any bond fund for dated money, run the honest comparison: our live GIC table often pays more than a bond ETF's YTM with zero price risk — the fund's advantages are daily liquidity and gains if rates fall. The bonds guide walks the full decision.
The bottom line
Interchangeable with VSB; two basis points cheaper, slightly yieldier sibling across the aisle. Pick your provider and move on.
This page is for educational purposes only and is not investment advice. Fund facts were verified at iShares (BlackRock Canada)'s published fact sheets and product pages on June 10, 2026; holdings and weights are point-in-time and drift between rebalances; published MERs may lag recent fee changes (page as of Jun 9, 2026). We deliberately do not compare or project returns. Read the fund facts document before buying. See our methodology.