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GISC vs SPMB

Guggenheim Securitized Income ETF

GISCDNYSE Arca

State Street SPDR Portfolio Mortgage Backed Bond ETF

SPMBANYSE Arca

Overlap

No data

Expense ratio

SPMB −0.43pt a year

GISC0.47%SPMB0.04%

Avg volume · 30D

SPMB 176.6×the volume

GISC9.16KSPMB1.62M

GISC vs SPMB Performance

Jul 31, 2026 – Oct 30, 2026

+0.2%GISC0.0%SPMB

Jul 31, 2026 to Oct 30, 2026. GISC +0.2%. SPMB 0.0%. Use the arrow keys to read each point.−3%−2%−1%1%Jul 2026Sep 2026Oct 2026
Expense ratio
GISC 0.47%
SPMB 0.04%, better
Fund size
GISC $93M
SPMB $7B
1Y total return
GISC No data
SPMB +0.3%
Yield (12M)
GISC No data
SPMB 4.23%
Holdings
GISC 52
SPMB 2779
Avg volume (30D)
GISC 9.16K sh
SPMB 1.62M sh, better
NAV per share
GISC $49.54
SPMB $21.63
52W range

ETF.net Grade

GISC: Cost 27, Risk 60, Mission not scored, Tradability 23, Holdings 20, Durability 13. SPMB: Cost 94, Risk 34, Mission 64, Tradability 95, Holdings 75, Durability 83.
Pillar letters and Scores for GISC, SPMB, with each pillar’s weight
PillarGISCSPMB
Cost30% weightD27A94Higher
Mission25% weightNot scoredB64
Risk15% weightB60HigherD34
Tradability15% weightF23A95Higher
Holdings10% weightF20A75Higher
Durability5% weightF13A83Higher

Rank among Mortgage-Backed Securities funds

How we build Categories ›
Same Category. Both funds are graded against the same funds, so their Grades compare head to head.

Same Category. GISC and SPMB are both graded against the same 24 Mortgage-Backed Securities funds, so their Grades compare head to head.

Mortgage-Backed Securities⁠

Category · 24 funds
See all 24 ›

SPMB ranks 1st and GISC 21st of 24 funds in the Mortgage-Backed Securities Category.

  1. Rank 1ASPMBState Street SPDR Portfolio Mortgage Backed Bond ETFScore 75
  2. Rank 2AMBBiShares MBS ETFScore 73
  3. Rank 20DPMBSPIMCO Mortgage-Backed Securities Active Exchange-Traded FundScore 32
  4. Rank 21DGISCGuggenheim Securitized Income ETFScore 31
  5. Rank 21DMBSAngel Oak Mortgage-Backed Securities ETFScore 31
  6. MBSFNot yet graded
  7. MBSXNot yet graded

Our read on each fund

ETF.net Research

GISCDGuggenheim Securitized Income ETF

SPMBAState Street SPDR Portfolio Mortgage Backed Bond ETF

In short

GISC No data

SPMB The no-frills way to own America's mortgage bonds. SPMB tracks the Bloomberg U.S. MBS Index for four basis points, a fraction of what the typical mortgage-bond ETF charges, and pays income monthly.

Stated mandate

GISC No data

SPMB The fund seeks to track, before fees and expenses, the price and yield performance of the Bloomberg U.S. MBS Index.

Why people hold it

GISC No data

  • SPMB Four basis points a year, against a 0.35% median for mortgage-bond ETFs. Cost is where this fund does its loudest talking.
  • Runs the same Bloomberg U.S. MBS Index as iShares' MBB at the same 0.04% fee, and undercuts MBBA, which tracks that index for far more.
  • Roughly 2,700 mortgage bonds in a single line item, inside a multi-billion-dollar fund that trades actively, with distributions paid monthly.
  • Trading since 2009, and one of the strongest implementations in its mortgage-bond peer group.

Worth knowing

GISC No data

  • SPMB Homeowners refinance when rates fall, so mortgage bonds get paid back early and rally less than Treasuries. That quirk is built into the index, not the fund.
  • Prices move with interest rates and the monthly payout floats with the portfolio. This is a bond fund, not a cash substitute.
  • US mortgages only. No Treasuries, no corporates, no credit spice. A building block for a bond sleeve rather than the whole sleeve.

Full GISC profile⁠

Full SPMB profile⁠

GISC vs SPMB 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.

GISC vs SPMB Cost

Overpaying GISC vs SPMB

$8,569

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

  • GISC 0.47%

    $9,418

  • SPMB 0.04%

    $849

$10,000
30 years

Cost over time

  • GISC 0.47%
  • SPMB 0.04%
  • Overpaying
One line per fund, from year 0 to year 30. Use the arrow keys to read each point.$0$2K$4K$6K$8K$10K051015202530GISC $9,418SPMB $849

Year by year

YearGISCSPMBOverpaying
10$847$73$774
20$3,261$288$2,973
30$9,418$849$8,569

Expense ratio

  • 0.47%GISC
  • 0.04%SPMB, cheaper
  • Middle half of Mortgage-Backed Securities funds
  • Median 0.38%

SPMB 3rd cheapest of 24 funds

GISC 19th cheapest of 24 funds

GISC vs SPMB Dividends

Last 12 months to Oct 30, 2026
Yield (12M)
GISC No data
SPMB 4.23%
Payout (12M)
GISC No data
SPMB $0.92
Last payment
GISC $0.20
SPMB $0.07
Ex-dividend
GISC Oct 5, 2026
SPMB Oct 1, 2026
Paid on
GISC Oct 9, 2026
SPMB Oct 6, 2026
Frequency
GISC Monthly
SPMB Monthly

Distribution history

Per share, 2023 to 2026, same scale for both

GISCMonthly · 3 paymentsAll GISC payments⁠
One bar per payment. 3 payments from 2023 to 2026 YTD. Aug 5, 2026 $0.32; Sep 3, 2026 $0.22; Oct 5, 2026 $0.20. Use the arrow keys to read each point.$0$0.2520232026YTD
SPMBMonthly · 45 paymentsAll SPMB payments⁠
One bar per payment. 45 payments from 2023 to 2026 YTD. Feb 1, 2023 $0.06; Mar 1, 2023 $0.06; Apr 3, 2023 $0.06; May 1, 2023 $0.06; Jun 1, 2023 $0.06; Jul 3, 2023 $0.06; Aug 1, 2023 $0.06; Sep 1, 2023 $0.06; Oct 2, 2023 $0.06; Nov 1, 2023 $0.06; Dec 1, 2023 $0.06; Dec 18, 2023 $0.06; Feb 1, 2024 $0.06; Mar 1, 2024 $0.06; Apr 1, 2024 $0.06; May 1, 2024 $0.06; Jun 3, 2024 $0.06; Jul 1, 2024 $0.06; Aug 1, 2024 $0.06; Sep 3, 2024 $0.07; Oct 1, 2024 $0.07; Nov 1, 2024 $0.07; Dec 2, 2024 $0.07; Dec 19, 2024 $0.10; Feb 3, 2025 $0.07; Mar 3, 2025 $0.07; Apr 1, 2025 $0.07; May 1, 2025 $0.07; Jun 2, 2025 $0.07; Jul 1, 2025 $0.07; Aug 1, 2025 $0.07; Sep 2, 2025 $0.07; Oct 1, 2025 $0.07; Nov 3, 2025 $0.07; Dec 1, 2025 $0.07; Dec 18, 2025 $0.14; Feb 2, 2026 $0.07; Mar 2, 2026 $0.07; Apr 1, 2026 $0.07; May 1, 2026 $0.07; Jun 1, 2026 $0.07; Jul 1, 2026 $0.07; Aug 3, 2026 $0.07; Sep 1, 2026 $0.07; Oct 1, 2026 $0.07. Use the arrow keys to read each point.$0$0.2520232026YTD

GISC vs SPMB Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years
GISC No dataSPMB 6.5%
Return per unit of riskSharpe ratio, 3 years
GISC No dataSPMB 0.28
Worst fallMax drawdown, 5 years
GISC No dataSPMB −17.0%
Market sensitivityBeta, 5 years
GISC 0.25SPMB 1.15

Popular comparisons

  • GISCDvsMBBA

    Guggenheim Securitized Income ETF · iShares MBS ETF

    Expense ratio
    0.47% · 0.04%
    Category
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  • SPMBAvsMBBA

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    Category
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