Learn · basics · SPY 0DTE

What is 0DTE?

0DTE means zero days to expiration — options that expire the same trading day you trade them. On names like SPY, QQQ, and SPX, that means a fresh daily expiry almost every session. This page is educational only — not investment advice.

By the 0DTE Confluence desk · Updated Aug 31, 2026 · Not investment advice

Why traders care about same-day options

Daily expirations concentrate open interest and hedging into a short clock. That can create clear intraday levels (walls, flip, pin/magnet) and violent premium moves. It also means mistakes get expensive fast: there is little time for a thesis to “work overnight.” The product itself is an exchange-listed option that expires today — CBOE SPX and ETF options (SPY/QQQ) under OCC clearing are the source of those expirations; this site maps dealer gamma on top of that, it does not define the contract.

Gamma — delta changes quickly as the underlying moves; dealers hedge aggressively near large OI.
Theta — time decay accelerates into the close; long premium needs the move sooner.
Liquidity — SPY 0DTE is usually deep; single-name “0DTE” weeklies are a different game.

SPY vs SPX vs QQQ

SPY is the liquid ETF vehicle many retail desks use for graded alerts and tight contracts. SPX (and SPXW weeklies) is the index cousin — bigger point moves per tick. QQQ tracks Nasdaq-100 and often leads risk-on/off tape. Structure ideas (walls/flip) can apply across the complex; contract sizing and approval requirements differ.

Gamma walls in one paragraph

When dealers are long or short gamma at a strike, their hedging can act like support or resistance. Traders call heavy call-side clusters a call wall and put-side clusters a put wall. The gamma flip is where net dealer gamma tends to change character (fade/pin vs amplify). Deeper guide: SPY 0DTE gamma walls explained.

How 0DTE Confluence uses this

0DTE Confluence is a SPY/QQQ/IWM 0DTE scanner (Desk/Rails; Tape is SPY-only). It does not auto-trade. It posts Discord alerts when price is at a known rail and a 1-minute candle confirms, with a letter grade (A+ or B) and an invalidation level. Read how graded alerts work or browse free scanner stats.

Risks (read this)

Options involve substantial risk of loss and are not suitable for all investors. 0DTE premium can go to near-zero in minutes. Past scanner prints and stats are not a win-rate promise. You place every order in your own broker. See our risk disclaimer.

Next guides

SPY 0DTE gamma walls explained
Gamma flip for SPY
SPY 0DTE alerts — the graded Discord product page
How graded SPY 0DTE alerts work
A+ vs B alerts
PDT rule removal 2026

Frequently asked questions

What does 0DTE mean?

0DTE means zero days to expiration — an option contract that expires on the same trading day it is traded. SPY, QQQ, and SPX offer daily 0DTE expirations.

Why are 0DTE options risky?

Same-day options have extreme gamma and theta: premium can swing hard on small underlying moves and decay quickly into the close. They are not suitable for everyone and involve substantial risk of loss.

What is a SPY 0DTE gamma wall?

A gamma wall is a strike where dealer hedging flows cluster from option open interest — often a call wall above spot or put wall below. Traders use walls as structure; confirmation still requires price action and risk management.

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