0dteclose Arm a rule
SPX0DTE session2026-09-25official close
CBOE's official close field when the payload carries it; otherwise the last delayed print, and the row says so (last_delayed_print). SPXW PM settlement uses the official closing index value, which can differ from the last print by cents.

SPX 0DTE session 2026-09-25: close 7,743.51, 43.51 pts from max pain

7,743.5143.51 pts from max pain 7,700official close (cboe_close) · 0.56% · measured from 110 delayed snapshots · last verified 2026-09-25
Open7,709.86
High7,752.07
Low7,693.08
Prev close7,704.13
Max pain 3:30 → close
The strike at which the session's expiring contracts would pay out the least intrinsic value in total, weighting every call and put by its open interest — this session's 0DTE contracts only (SPXW for SPX), from CBOE's once-a-day open interest. A modeled level, not a target.
7,700 → 7,700
Nearest strike7,7451.49 pts from the close
Walls at 3:30
Call wall: the strike with the largest 0DTE call open interest at or above spot. Put wall: the same for puts at or below spot. Both are searched within 2× the ATM straddle, never less than 0.5% of spot, so deep out-of-the-money strikes do not count.
7,750 / 7,700call / put
9:45 straddle vs range
The mid of the call plus the mid of the put at the strike nearest spot: what the 0DTE market was charging for a move to the close in either direction. A price, not a range the close has to respect.
±24.65 / 58.99implied / realized
SPX 0DTE post-mortem card 2026-09-25
SPX 0DTE session 2026-09-25: delayed spot path into the closeSPX delayed spot path on 2026-09-25 from 9:34am to 3:59pm ET (87 points, 15-min delayed); max pain at the close 7,700; call wall 7,750, put wall 7,700 at 3:30pm; official close 7,743.517,7007,7107,7207,7307,7407,75010:0011:0012:0013:0014:0015:0016:009:34am ET3:59pm ETcall wall 7,750close 7,743.51max pain 7,700put wall 7,700
Delayed spot path, one point per collector snapshot (5 min; 2 min after 3:15pm ET), as-of times are the prints' times (publish − 15 min). Lines: max pain at the close, call/put walls at 3:30pm, official close. Not a chart of trades.

Quick answers

Did SPX pin at max pain on 2026-09-25?

The official close 7,743.51 landed 43.51 pts (0.56%) from the 0DTE max-pain strike 7,700. Whether that counts as a "pin" depends on the threshold you pick — see the measured pin rate for the distribution.

What were the SPX 0DTE walls at 3:30pm?

Call wall 7,750, put wall 7,700 — the largest 0DTE open interest above and below spot within 2× the ATM straddle at the 3:30 snapshot (delayed). Modeled levels, not targets.

Implied vs realized on 2026-09-25?

The 9:45am ATM straddle priced a ±24.65 move; the session's high-low range was 58.99.

Cite this

0dteclose. "SPX 0DTE session 2026-09-25: close 7,743.51, max pain 7,700, 43.51 pts from max pain." https://0dteclose.com/sessions/spx/2026-09-25/ (15-min delayed CBOE data, official close).

Embed the card: <img src="https://0dteclose.com/cards/2026-09-25/SPX-postmortem.png" alt="SPX 0DTE post-mortem 2026-09-25"> — CC BY 4.0, link back.

Next