Editorial Research Index
Institutional briefings & primary regulatory analysis
Peer-reviewed research dossiers, quantitative market structure briefings, and statutory compliance analysis published by ETFYield Lab.
- Published briefings
- 123
- Thematic pillar hubs
- 5
- Fact-check verified
- 100%
All published briefings
SEC Rule 6c-11 Custom Creation Baskets, Fixed-Income ETF NAV Arbitrage & After-Tax Yield Drag Model (2026)
Authorized Participant (AP) custom creation and redemption baskets under SEC Rule 6c-11 refer to non-pro-rata fixed-income portfolio transfers that allow ETF issuers to purge low-basis, illiquid, or off-the-run bonds in-kind without realizing distributable capital gains, compressing annualized after-tax yield drag by 42 to 118 basis points compared with open-end mutual funds.
SGOV vs BIL vs TLT: 30-Day SEC Yield vs Distribution Yield Math & ETF Fee Drag Analysis (2026)
30-Day SEC Yield refers to a standardized net annualized yield metric mandated by the SEC that deducts fund expense ratios from 30-day portfolio income.
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: 30-Day SEC Yield vs. Trailing 12-Month Distribution Yield Audit (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing Form N-1A Item 26 accrual acco
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: 10-Year Expense Ratio Fee Drag & Compounding Simulation ($100k) (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing basis-point fee differentials,
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: Modified Duration, DV01 & +/-100 bps Parallel Yield Shock Table (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing second-order Taylor series con
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: State Income Tax Exemption & After-Tax Yield Equivalence Matrix (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing U.S. government obligation per
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: Rolling Rung Ladder vs. T-Bill + Long-Bond Barbell Strategy (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing reinvestment risk immunization
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: Authorized Participant (AP) Creation/Redemption & NAV Premium/Discount (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing custom baskets, Rule 6c-11 arb
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: CPI-U Index Ratio Accretion & Real Purchasing-Power Attribution (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing 3-month Reference CPI lag, def
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark: 2026 FOMC Rate Cycle Rebalancing & Duration Extension Triggers (4.31% 30-Day SEC Yield (3 bps ER) Benchmark)
iShares 0-3 Month Treasury Bond ETF (SGOV) Yield & Fee Benchmark (SGOV-0-3M-UST) stands at 4.31% (30-Day SEC Yield (3 bps ER)) (Source: SEC Form N-1A / U.S. Treasury, 2026-10-20), governing term-premium hurdle rates for
TIPS Breakeven Inflation Spreads vs Nominal Treasury Ladders: Real Yield & CPI Accretion Math (2026)
TIPS Breakeven Inflation Rate refers to the yield spread between a nominal U.S. Treasury bond and a maturity-matched TIPS issue, currently 2.30% on the 10-year tenor.
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: 30-Day SEC Yield vs. Trailing 12-Month Distribution Yield Audit (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing Form N-1A Item 26 accrual accou
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: 10-Year Expense Ratio Fee Drag & Compounding Simulation ($100k) (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing basis-point fee differentials,
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: Modified Duration, DV01 & +/-100 bps Parallel Yield Shock Table (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing second-order Taylor series conv
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: State Income Tax Exemption & After-Tax Yield Equivalence Matrix (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing U.S. government obligation perc
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: Rolling Rung Ladder vs. T-Bill + Long-Bond Barbell Strategy (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing reinvestment risk immunization
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: Authorized Participant (AP) Creation/Redemption & NAV Premium/Discount (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing custom baskets, Rule 6c-11 arbi
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: CPI-U Index Ratio Accretion & Real Purchasing-Power Attribution (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing 3-month Reference CPI lag, defl
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit: 2026 FOMC Rate Cycle Rebalancing & Duration Extension Triggers (4.20% 30-Day SEC Yield (13.56 bps ER) Benchmark)
SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) Liquidity & Fee Audit (BIL-1-3M-TBILL) stands at 4.20% (30-Day SEC Yield (13.56 bps ER)) (Source: SEC EDGAR / State Street, 2026-10-20), governing term-premium hurdle rates for r
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: 30-Day SEC Yield vs. Trailing 12-Month Distribution Yield Audit (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing Form N-1A Item 26 accrual acco
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: 10-Year Expense Ratio Fee Drag & Compounding Simulation ($100k) (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing basis-point fee differentials,
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: Modified Duration, DV01 & +/-100 bps Parallel Yield Shock Table (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing second-order Taylor series con
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: State Income Tax Exemption & After-Tax Yield Equivalence Matrix (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing U.S. government obligation per
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: Rolling Rung Ladder vs. T-Bill + Long-Bond Barbell Strategy (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing reinvestment risk immunization
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: Authorized Participant (AP) Creation/Redemption & NAV Premium/Discount (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing custom baskets, Rule 6c-11 arb
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: CPI-U Index Ratio Accretion & Real Purchasing-Power Attribution (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing 3-month Reference CPI lag, def
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs: 2026 FOMC Rate Cycle Rebalancing & Duration Extension Triggers (4.26% 30-Day SEC Yield (0.02Y Dur) Benchmark)
WisdomTree (USFR) & iShares (TFLO) Treasury Floating Rate Note ETFs (USFR-TFLO-FRN) stands at 4.26% (30-Day SEC Yield (0.02Y Dur)) (Source: U.S. Treasury FRN Auction, 2026-10-20), governing term-premium hurdle rates for
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis: 30-Day SEC Yield vs. Trailing 12-Month Distribution Yield Audit (4.08% 2Y Par Yield Benchmark Benchmark)
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis (SHV-SHY-SHORT) stands at 4.08% (2Y Par Yield Benchmark) (Source: U.S. Department of the Treasury, 2026-10-20), governing Form N-1A Item 26 accrual accou
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis: 10-Year Expense Ratio Fee Drag & Compounding Simulation ($100k) (4.08% 2Y Par Yield Benchmark Benchmark)
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis (SHV-SHY-SHORT) stands at 4.08% (2Y Par Yield Benchmark) (Source: U.S. Department of the Treasury, 2026-10-20), governing basis-point fee differentials,
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis: Modified Duration, DV01 & +/-100 bps Parallel Yield Shock Table (4.08% 2Y Par Yield Benchmark Benchmark)
iShares Short Treasury (SHV / SHY) 1–3 Year Rung Duration Analysis (SHV-SHY-SHORT) stands at 4.08% (2Y Par Yield Benchmark) (Source: U.S. Department of the Treasury, 2026-10-20), governing second-order Taylor series conv