# DIA Bid-Ask Spread, Liquidity and NAV Premium > As of Oct 22, 2026, DIA closed 0.00% from its NAV, and on 95% of the 251 days to then it was within ±0.05%. No fund is recommended. Data as of Oct 22, 2026. Rebuilt every trading night. As of Oct 22, 2026. Rebuilt every trading night. ## DIA bid-ask spread and liquidity As of Oct 22, 2026, DIA closed 0.00% from its NAV, and on 95% of the 251 days to then it was within ±0.05%. ### IQ Liquidity Score Not scored, 4 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, 98.6 Holdings can absorb $906m a day, Oct 22, 2026 Price fidelity, 100.0 95% of days within ±0.05% of NAV, 251 days to Oct 22, 2026 Primary market, 100.0 15 active dealers of 41; largest 25% of creations and redemptions, N-CEN to Dec 31, 2025 Bad-day behaviour, 100.0 Premium 1× normal on the 10 worst S&P 500 days, to Oct 22, 2026 Depth Not measured: needs trade and quote data (Phase 2) ### Premium or discount to NAV - Latest close, Oct 22, 2026: 0.00% - 95% of days within: ±0.05% - Days more than 1% from NAV: 0 of 251 - Widest: −0.18%, Jun 26, 2026 Close against the NAV its issuer struck the same day, 251 days from Oct 23, 2025 to Oct 22, 2026. Source: ETFIQ from the issuer’s NAV and closing price. ### Capacity Its holdings can absorb $906m a day, measured on its own holdings, as of Oct 22, 2026. The holding that sets the limit is TRAVELERS COS INC (TRV), 4.56% of the fund. ### Dealers 15 active of 41 authorized participants; the largest did 25% of creations and redemptions, in the year to Dec 31, 2025 (Form N-CEN filed Mar 13, 2026). The active authorized participants, largest first, by share of the dollars created and redeemed: RBC Capital Markets, LLC (24.9%), Merrill Lynch Professional Clearing Corp. (15.9%), ABN AMRO Clearing USA LLC (13.7%), Goldman Sachs & Co. LLC (12.6%), SG Americas Securities, LLC (11.5%), Morgan Stanley & Co. LLC (9.7%), Citadel Securities LLC (3.7%), BNP Paribas Prime Brokerage, Inc. (2.3%), Jane Street Capital, LLC (2.1%), Citigroup Global Markets Inc. (0.9%), Barclays Capital Inc. (0.8%), CIBC World Markets Corp. (0.8%), J.P. Morgan Securities LLC (0.5%), Virtu Americas LLC (0.4%), UBS Securities LLC (0.1%). 26 more were listed and created or redeemed nothing. ### How to trade DIA 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. Size Up to $9m is 1% of what its holdings can absorb in a day, for a buy or a sell. Watch The premium. On 95% of days it is within ±0.05%; beyond that a buyer pays more, and a seller gets less, than the holdings are worth. ### 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 Does DIA trade at a premium or discount to NAV? It closed 0.00% from its NAV on Oct 22, 2026. On 95% of the 251 days to then it was within ±0.05%, and it closed more than 1% from NAV on 0 of them. Who is the AP for DIA? DIA’s latest Form N-CEN, for the period ending Dec 31, 2025, lists 41 authorized participants (APs), and 15 created or redeemed shares. The largest were RBC Capital Markets, LLC (24.9%), Merrill Lynch Professional Clearing Corp. (15.9%), ABN AMRO Clearing USA LLC (13.7%) of the dollars its APs created and redeemed. Who is the LMM for DIA? DIA’s lead market maker (LMM) on NYSE Arca is IMC-Chicago, LLC. Lead market maker per NYSE Arca, as of Oct 23, 2026. ### Sources and dates - Premium: ETFIQ, close against the issuer’s NAV, Oct 23, 2025 to Oct 22, 2026. - Capacity: ETFIQ, from each holding’s 20-day median dollar volume, to Oct 22, 2026. - Dealers: Form N-CEN, the year to Dec 31, 2025, accession 0001410368-26-023903. ### 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, DIA trading: cost, capacity, premium and dealers, data as of Oct 22, 2026. https://etfiq.com/funds/dia/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/dia/trading/