ICSH vs VGUS

ICSHAiShares Ultra Short Duration Bond Active ETF

VGUSAVanguard Ultra-Short Treasury ETF

In short

ICSH BlackRock's active cash-parking sleeve, live since 2013: roughly 250 ultra-short investment-grade bonds and money market instruments, run for current income with preservation of capital, at 0.08% a year.

VGUS A one-ticker parking spot at the very front of the Treasury curve: about 90 bills and short notes, passively sampled, income paid monthly. Vanguard opened it in 2025 at 0.07%, under the typical Treasury fund in its peer group.

Stated mandate

ICSH The fund seeks current income consistent with preservation of capital through actively managed exposure to ultra-short-term investment-grade bonds and money market instruments.

VGUS Vanguard says the fund seeks to track a market-weighted Treasury index with an ultra-short dollar-weighted average maturity. It uses passive index sampling and generally invests at least 80% of assets in securities in, or economically similar to, the index.

Why people hold it

• ICSH At 0.08% a year it undercuts the typical cash-alternative ETF, which charges about 0.20%, and comes in below top-rated rivals like FLUD and JPST.
• Actively managed rather than a fixed ladder: the team picks across ultra-short investment-grade bonds and money market instruments, spread over roughly 250 positions.ishares.com
• Trading since 2013 and now a multi-billion-dollar fund that changes hands actively, giving it one of the longer records in the cash-alternative aisle.
• Sits in the top quartile of its cash-alternative peer group, helped by high-quality holdings and low cost.

• VGUS 0.07% a year against a 0.12% median for Treasury funds in its peer group. Fees bite hardest at the short end, where there is no duration cushion to hide them.
• Government paper only: roughly 90 US Treasuries sampled against the Bloomberg Short Treasury Index. No corporate credit, no mortgages, no derivatives overlay.
• Tracking has been tight since launch, and the mandate is plain: at least 80% in index securities or economic equivalents. What it says on the tin is what it holds.
• Pays monthly and slots into Vanguard's Treasury shelf next to VGIT and VTG, so you can move along the maturity ladder without leaving the lineup.

Worth knowing

• ICSH Not a money market fund. The share price floats, and preservation of capital is the stated aim, not a promise.ishares.com
• It holds investment-grade corporate paper alongside money market instruments, so it carries credit risk a Treasury-bill-only fund does not.ishares.com
• It pays monthly, but the amount rides short-term rates, and as an active fund its results can drift from its 6-month T-bill reference index either way.

• VGUS Not the cheapest ticker on Vanguard's own bond shelf: VGIT and VTG run 0.03%. The ultra-short slice costs a few extra basis points.
• Ultra-short maturities mean income resets as short-term rates move, up or down. This is a cash-management tool, not a bet on falling yields.
• A 2025 launch, so the history is short and trading is moderate rather than heavy. Worth eyeing the spread on large orders in the first and last minutes of the day.

Full ICSH profile⁠

Full VGUS profile⁠