# BUXX Bid-Ask Spread, Liquidity and NAV Premium > BUXX trading costs and liquidity: spread, premium to NAV, capacity and dealers, from ETFIQ. Spread, premium to NAV, capacity and dealers, dated. Data as of Sep 11, 2026. Rebuilt every trading night. As of Sep 11, 2026. Rebuilt every trading night. ## BUXX bid-ask spread and liquidity ### IQ Liquidity Score Not scored, 1 of 6 measured. A fixed 0 to 100 scale of trading conditions, the same anchors for every fund; 100 is the easiest to trade. It measures how cheaply and reliably the fund can be bought and sold, not whether to own it. How the score is built Cost to trade Not measured: the issuer's 30-day median spread is not read for this fund Capacity Not measured: its holdings are bonds, which have no volume source here Price fidelity Not measured: no closing premium is held for this fund Primary market, 65.0 4 active dealers of 4; largest 50% of creations and redemptions, N-CEN to Jun 30, 2026 Bad-day behaviour Not measured: no daily closing premium is held for this fund Depth Not measured: needs trade and quote data (Phase 2) ### Capacity Not measured: its holdings are bonds, which have no volume source here. ### Dealers 4 active of 4 authorized participants; the largest did 50% of creations and redemptions, in the year to Jun 30, 2026 (Form N-CEN filed Sep 11, 2026). The active authorized participants, largest first, by share of the dollars created and redeemed: Merrill Lynch Professional Clearing Corp. (50.2%), Jane Street Capital, LLC (25.4%), Virtu Americas LLC (17.3%), Goldman Sachs & Co. LLC (7.1%). ### How to trade BUXX When ETF spreads are usually widest in the first minutes after the open and the last minutes before the close. ETFIQ measures this fund’s own day once it has trade data. ### Coming with trade data Spread through the day, buyers against sellers, an estimate of retail flow, large trades and the closing auction’s share, each once ETFIQ has trade and quote data. ### Questions people ask Who is the AP for BUXX? BUXX’s latest Form N-CEN, for the period ending Jun 30, 2026, lists 4 authorized participants (APs), and 4 created or redeemed shares. The largest were Merrill Lynch Professional Clearing Corp. (50.2%), Jane Street Capital, LLC (25.4%), Virtu Americas LLC (17.3%) of the dollars its APs created and redeemed. Who is the LMM for BUXX? BUXX is on none of the lead market maker (LMM) lists ETFIQ reads, from NYSE Arca, Cboe BZX and Nasdaq. Each list covers only that exchange’s own program, so this does not mean it has no LMM. ### Sources and dates - Dealers: Form N-CEN, the year to Jun 30, 2026, accession 0001193125-26-388859. ### Where to next The score measures trading conditions, not the fund. ETFIQ is an independent publisher, not an adviser, and makes no recommendations. Standards and sources --- Source: ETFIQ, independent ETF data. Recomputed nightly from public filings and prices. Cite: ETFIQ, BUXX trading: cost, capacity, premium and dealers, data as of Sep 11, 2026. https://etfiq.com/funds/buxx/trading/ Licence: https://etfiq.com/license/ Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms. HTML: https://etfiq.com/funds/buxx/trading/