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Market Analysis5 min read

September 3 Findings: The Rally Sat on 773 / 7750

Written by
John Hu

Rank Symbols on the completed September 3 session shows SPY tagging the $774 0DTE call wall and closing on the $773 top. SPXW 0DTE ran to 7757, then sat under the 7750 top. GEX is prior-close structure (T+1); the OHLC is the session.

#gamma exposure#call wall#put wall#0DTE#Rank Symbols#SPY#SPX

This is a Rank Symbols readout of the completed September 3, 2026 session. It is not a trade.

Two clocks sit on the same screen:

  1. Session OHLC — what printed that day.
  2. TradingFlow GEX — that session's prior-close structure (T+1). It does not recompute live 0DTE books.

The rally closed under the T+1 0DTE tops. That is the finding. See Greeks and GEX. The prior session, September 2, had closed on 765 / 7670.

Diagram of the September 3 session: OHLC versus TradingFlow T+1 0DTE walls on SPY and SPXW

Session tape versus T+1 structure. GEX levels are prior-close. Price bars are that session. Neither row is a forecast.

Readers with access can start from SPY Gamma Exposure and SPXW, 0DTE horizon. Sign-in and a paid Rank entitlement may be required.

What printed

SPX on September 3 (Rank daily bar):

  • Open 7,686.70
  • Low 7,686.70
  • High 7,756.80
  • Close 7,747.70

SPY:

  • Open 767.90
  • Low 767.50
  • High 774.00
  • Close 773.20
  • Volume 41.44M (September 2 was 14.27M)

The session gapped from the September 2 SPX close of 7,669.70. The low printed at the open. The high ran the 7750s. Close sat just under 7,750.

SPY 0DTE: high tagged 774, close sat on 773

Annotated Rank Symbols Gamma Exposure for SPY 0DTE on September 3, 2026, with callouts on the session lock and close versus the $773 top

Test app, session 2026-09-03, horizon Today · 0DTE. Callout 1 is the session lock. Callout 2 is high versus the $774 call wall and close versus the $773 magnet / 0DTE top. GEX levels are prior-close structure (T+1). Captured September 4, 2026.

On this snapshot:

  • Environment: Positive
  • Net GEX: +$4.5B (gross $5.7B)
  • Call wall: $774.00
  • Magnet / 0DTE top: $773.00
  • Flip: $768.49
  • 0DTE share of all-expiration gross GEX: 12.4%
  • Structure built 5:41 PM EDT

The high $774.00 printed on the call wall. Close $773.20 sat twenty cents above the 0DTE top. That is a pin-shaped close on this clock.

All-expiration SPY on the same session is still positive (net GEX +$6.8B, gross $46.5B), with call wall $775, 0DTE top $773, and flip $769.80. The same-day map is the tighter one.

SPXW 0DTE: close sat under 7750

Cash SPX 0DTE lives on SPXW. Same session, horizon Today · 0DTE:

Annotated Rank Symbols Gamma Exposure for SPXW 0DTE on September 3, 2026, with callouts on the 0DTE horizon and close versus the $7750 top

Same session, SPXW, horizon Today · 0DTE. Callout 1 is the SPXW lock. Callout 2 is close versus the $7,750 0DTE top. Structure built 5:41 PM EDT. Captured in the test app on September 4, 2026.

On this snapshot:

  • Environment: Positive (net GEX +$24.4B, gross $42.4B)
  • Call wall / magnet / 0DTE top: $7,750 (66.9% of selected-range gross GEX)
  • Put wall: $7,745
  • Flip: $7,722.17
  • 0DTE share of all-expiration gross GEX: 17.6%

The session high ran seven points through the T+1 top (7,756.80), then closed under it (7,747.70). Two-thirds of this horizon's selected-range gross GEX sits on that 7,750 strike. That is concentration, not a forecast that the next session pins there.

SPXW all-expiration on the same session is coarser: call wall / magnet / 0DTE top still $7,750, put wall $7,700, flip $7,688.43, net GEX +$85.7B. The 0DTE book is the one that matches the close.

September 2 split the books: SPY all-expiry was near flip, −$2B, SPXW 0DTE was positive. September 3 is positive on both. Mixing those two days into one gamma slogan erases the horizon and the session.

What this session is evidence of

QuestionTradingFlow on Sept 3Clock
Where did SPY close versus same-day structure?Magnet / 0DTE top $773, close $773.20, call wall $774T+1 0DTE GEX + session OHLC
Did the high hold the SPY 0DTE call wall?High $774.00 printed on itSession OHLC
Where did same-day SPX gamma sit?SPXW 0DTE top 7,750, close 7,747.70, high 7,756.80T+1 0DTE snapshot
Was the session "negative GEX"?SPY 0DTE positive, +$4.5B; SPY all-expiry positive, +$6.8B; SPXW 0DTE positive, +$24.4BT+1 snapshot, not signed MM inventory
Did the bounce continue from Sept 2's 7670 close?SPX opened 7,686.70 (gap from 7,669.70) and never printed that closeSession OHLC

Positive GEX here is modeled structure, not observed dealer inventory. See Unusual options activity is not a signal until the tape checks out.

Reproduce the findings

  1. Open Rank Symbols → trading date Sep 3, 2026 → symbol SPY → Gamma Exposure → horizon Today · 0DTE. Record environment, walls, flip, net GEX, and the daily OHLC.
  2. Change symbol to SPXW. Keep horizon Today · 0DTE. Record the 0DTE top, put wall, and flip. Confirm the structure timestamp (this run: 5:41 PM EDT).
  3. Optionally switch each underlier to All expirations and note that SPY's call wall moves to $775 while SPXW's 0DTE top stays $7,750.
  4. Stop before "therefore buy/sell."

TradingFlow App Home → Rank Symbols for the session lock → GEX for walls and flip.

Learn more

Tags#gamma exposure#call wall#put wall#0DTE#Rank Symbols#SPY#SPX

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