ICSH vs WEEK: Grades, Fees and Holdings Compared

iShares Ultra Short Duration Bond Active ETF

ICSHACboe

Roundhill Weekly T-Bill ETF

WEEKBCboe

Overlap

0.0%by weight

Expense ratio

ICSH −0.11pt a year

ICSH0.08%WEEK0.19%

Avg volume · 30D

ICSH 42.4×the volume

ICSH1.64MWEEK38.8K

ICSH vs WEEK Performance

Oct 31, 2025 – Oct 30, 2026

+3.6%ICSH+3.6%WEEK

Expense ratio: ICSH 0.08%, better; WEEK 0.19%
Fund size: ICSH $8.97B; WEEK $183M
1Y total return: ICSH +3.6%; WEEK +3.6%
Yield (12M): ICSH 4.13%, better; WEEK 3.53%
Holdings: ICSH 408; WEEK 14
Avg volume (30D): ICSH 1.64M sh, better; WEEK 38.8K sh
NAV per share: ICSH $50.47; WEEK $100.04
52W range

ETF.net Grade

Pillar letters and Scores for ICSH, WEEK, with each pillar’s weight
Pillar	ICSH	WEEK
Cost30% weight	A89Higher	D38
Mission25% weight	A100	A100
Risk15% weight	C53Higher	C49
Tradability15% weight	A76Higher	B59
Holdings10% weight	A95	A100Higher
Durability5% weight	A90Higher	C47

Rank among Cash & Ultra-Short Income funds

How we build Categories ›

Same Category. ICSH and WEEK are both graded against the same 78 Cash & Ultra-Short Income funds, so their Grades compare head to head.

Cash & Ultra-Short Income⁠

Category · 78 funds

See all 78 ›

ICSH ranks 1st and WEEK 31st of 78 funds in the Cash & Ultra-Short Income Category.

Rank 1AICSHiShares Ultra Short Duration Bond Active ETFScore 85
Rank 2ACLIPGlobal X 1-3 Month T-Bill ETFScore 82
Rank 30BCGUICapital Group Ultra Short Income ETFScore 65
Rank 31BWEEKRoundhill Weekly T-Bill ETFScore 64
Rank 32BOBILUS Treasury 12 Month Bill ETFScore 63

Our read on each fund

ETF.net Research

ICSHAiShares Ultra Short Duration Bond Active ETF

WEEKBRoundhill Weekly T-Bill 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.

WEEK A T-bill fund built around the calendar. WEEK holds Treasury bills maturing in 0 to 3 months, aims to pay every week, and sizes those payments to hold its NAV steady week over week. It launched in 2025 as the first of its kind.

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.

WEEK The Fund seeks weekly distributions of current income by investing primarily in U.S. Treasury bills maturing within 0 to 3 months at purchase. It is actively managed and seeks to maintain a stable week-over-week NAV.

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.

WEEK Income arrives as weekly cash, not accrual: the fund targets a distribution every week, sized to keep NAV level week over week.roundhillinvestments.com
An actively managed bill ladder someone else rolls: it buys Treasury bills maturing within 0 to 3 months and handles the reinvestment as they mature.roundhillinvestments.com
Holdings match the label: US Treasury bills, no reach into commercial paper or corporate credit to pad the payout.

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.

WEEK The weekly plumbing costs more than the aisle: 0.19% a year, against a category median of 0.14% and cheaper bills funds like VBIL at 0.06% and CLIP at 0.07%.
Not a money market fund: no fixed $1 NAV, and Roundhill discloses that payments exceeding income and gains are treated as return of capital.roundhillinvestments.com
A 2025 launch, mid-sized and moderately traded, so spreads and depth trail the entrenched giants of the T-bill aisle.

Full ICSH profile⁠

Full WEEK profile⁠

ICSH vs WEEK Holdings

How ICSH and WEEK differ

Overlap by weight

0.0%

Shared holdings make up 0.0% of ICSH and 0.0% of WEEK.

Level by level

Asset classFixed Income, Equity0.0%
Holdings0 in both0.0%
Countryby domicile75.4%

Sector

No Sector split for WEEK.

Country, concentration and asset class

Country by domicile

Country weights in ICSH and WEEK, widest gap first
Country	More in ICSHMore in WEEK	ICSH	WEEK
United States	WEEK +24.6 points	75.4%	100.0%
Canada	ICSH +4.5 points	4.5%	0.0%
United Kingdom	ICSH +3.3 points	3.3%	0.0%
Australia	ICSH +3.1 points	3.1%	0.0%
Sweden	ICSH +3.1 points	3.1%	0.0%
New Zealand	ICSH +2.6 points	2.6%	0.0%
Japan	ICSH +1.4 points	1.4%	0.0%
Luxembourg	ICSH +1.3 points	1.3%	0.0%
Other countries (10)	ICSH +5.4 points	5.4%	0.0%

Outside the US: ICSH 98% developed, 2% emerging.

Concentration

Weight in the 10 largest Holdings

ICSH10.0%
WEEK77.2%

Securities held

ICSH407
WEEK14

Asset class

ICSH: Fixed Income
WEEK: Equity

Holdings

Only in ICSH407
In both0
Only in WEEK14

Only in ICSH

407 securities, 100% of ICSH by weight

Tri-Party Mizuho Securities Usa Ll1.52%
Tri-Party Citigroup Global Markets1.35%
Tri-Party Goldman Sachs & Co. Llc1.11%
Tri-Party Wells Fargo Securities L1.00%
Commerzbank AG (New York Branch) 06/23/20270.93%
Tri-Party Bofa Securities Inc.0.91%
Banco Bilbao Vizcaya Argentaria SA 03/10/20270.85%
Bpce SA 144A 05/06/20270.83%
Westpac Securities Nz Ltd 144A 06/09/20270.78%
Skandinaviska Enskilda Banken Ab 144A 05/10/20270.71%
Cooperatieve Rabobank Ua (New York 11/16/20260.69%
Britannia Funding Company Llc 144A 03/15/20270.66%
Svenska Handelsbanken Ab 144A 04/13/20270.66%
Mizuho Bank Ltd (New York Branch) 05/26/20270.64%
Northwestern Mutual Global Funding Mtn 144A 4.40% 03/30/20290.63%
Toyota Motor Credit Corp Mtn 4.25% 05/12/20280.63%
Cdp Financial Inc 144A 03/24/20270.62%
Sumitomo Mitsui Trust Bank Ltd (Ne 11/24/20260.61%
Morgan Stanley Private Bank Na 4.20% 11/17/20280.60%
Pacific Life Global Funding Ii Mtn 144A 4.30% 04/27/20290.59%
Salesforce Inc 4.50% 03/15/20280.59%
Bank of New Zealand 144A 04/16/20270.59%
Honeywell Aerospace Inc 3.90% 03/16/20280.59%
Athene Global Funding Mtn 144A 4.83% 05/09/20280.59%
New York Life Global Funding Mtn 144A 4.20% 04/20/20290.59%
Bank of New Zealand 144A 05/12/20270.58%
Bank of Nova Scotia 144A 05/20/20270.58%
Toronto-Dominion Bank (New York Br 09/17/20270.57%
Deutsche Bank AG (New York Branch) 05/05/20270.56%
Verto Capital Comp C 144A 01/19/20270.56%
Natixis (New York Branch) 05/12/20270.55%
Ubs AG (Stamford Branch) Mtn 4.28% 05/17/20270.55%
Canadian Imperial Bank of Commerce 02/05/20270.55%
Massmutual Global Funding Ii Mtn 144A 4.00% 01/22/20290.55%
Athene Global Funding Mtn 144A 4.80% 03/06/20280.54%
Tri-Party Bnp Paribas0.52%
Equitable America Global Funding Mtn 144A 4.30% 12/15/20280.52%
Cooperatieve Rabobank Ua (New York Mtn 4.37% 05/27/20270.52%
Federation Des Caisses Desjardins 144A 11/01/20270.52%
Nextera Energy Capital Holdings In 144A 11/03/20260.51%
JPMorgan Chase & Co Fxd-Frn 2.95% 02/24/20280.51%
Barclays Bank PLC (New York Branch 08/10/20270.51%
Treasury Note (2OLD) 4.13% 08/31/20280.50%
Crh America Finance Inc 144A 12/08/20260.48%
Mackinac Funding Co Llc 144A 03/08/20270.48%
Enbridge Inc 144A 11/06/20260.48%
Oversea-Chinese Banking Corporatio 144A 04/23/20270.47%
Ing Bank NV 144A 4.55% 07/07/20290.47%
Banco Santander SA 144A 05/04/20270.47%
Treasury Note 4.13% 10/31/20260.47%

Only in WEEK

14 securities, 100% of WEEK by weight

United States Treasury Bill 11/17/20267.81%
United States Treasury Bill 11/24/20267.80%
United States Treasury Bill 12/08/20267.79%
United States Treasury Bill 12/15/20267.71%
United States Treasury Bill 12/01/20267.70%
United States Treasury Bill 11/10/20267.70%
United States Treasury Bill 01/26/20277.66%
United States Treasury Bill 01/19/20277.66%
United States Treasury Bill 01/12/20277.66%
United States Treasury Bill 01/05/20277.66%
United States Treasury Bill 11/03/20267.63%
United States Treasury Bill 12/22/20267.62%
United States Treasury Bill 12/29/20267.61%
First American Government Obligations Fund 12/01/2031<0.01%

Weight gaps

ICSH and WEEK share no securities.

All 251 ICSH holdings⁠All 15 WEEK holdings⁠

How we measure overlap

Each holding counts at its smaller weight in the two funds, summed over the full Holdings. Sector, country and asset class use the same rule on each fund’s split. Cash, FX and derivative lines stay out of the counts. Two bond funds get no overlap figure.

ICSH vs WEEK Cost

Overpaying WEEK vs ICSH

$2,263

On $10,000 over 30 years. 7% growth a year before fees, expense ratio only.

ICSH 0.08%
$1,689
WEEK 0.19%
$3,952

Amount$10,000

Years30 years

Cost over time

ICSH 0.08%
WEEK 0.19%
Overpaying

Year by year

Year	ICSH	WEEK	Overpaying
10	$147	$347	$200
20	$575	$1,351	$776
30	$1,689	$3,952	$2,263

Expense ratio

0.08%ICSH, cheaper
0.19%WEEK

ICSH0.08%WEEK0.19%

0.03%1.00%

Middle half of Cash & Ultra-Short Income funds
Median 0.18%

ICSH 10th cheapest of 78 funds

WEEK 42nd cheapest of 78 funds

ICSH vs WEEK Dividends

Last 12 months to Oct 30, 2026

Yield (12M): ICSH 4.13%, better; WEEK 3.53%
Payout (12M): ICSH $2.08; WEEK $3.54
Last payment: ICSH $0.17; WEEK $0.07
Ex-dividend: ICSH Oct 1, 2026; WEEK Oct 27, 2026
Paid on: ICSH Oct 6, 2026; WEEK Oct 28, 2026
Frequency: ICSH Monthly; WEEK Weekly

Distribution history

Per share, 2026, same scale for both

ICSHMonthly · 9 paymentsAll ICSH payments⁠

WEEKWeekly · 43 paymentsAll WEEK payments⁠

ICSH vs WEEK Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years: ICSH 0.4%WEEK 0.2%since Apr 2025
Return per unit of riskSharpe ratio, 3 years: ICSH 0.87WEEK −1.68since Apr 2025
Worst fallMax drawdown, 5 years: ICSH −0.7%WEEK −0.1%since Mar 2025
Market sensitivityBeta, 5 years: ICSH 0.04WEEK 0.0004; Market = 1

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