OI Structure analyzer · SPXSet

Structure v1.7.5 · Exp 2026-08-18 · Data 2026-08-18 13:28:21 ET · Generated 2026-08-18 09:29:20 ET · All times US Eastern (ET)
Spot
7,745.06
Base / Range
7700 · 7400–8000
Call OI (P1)
97,110
Put OI (P1)
135,105
P/C Ratio
1.391
Strikes P1 / sig / P2
121 / 73 / 266
Expected Move (pre-market) snapshot · observation
Center S* (SPX scale)
7,705.81
ES 7,729.50 · basis(ES−S*) 23.69 · ΔES -39.25
es_gap_on_spx_prev · S* = SPX_prev_close + (ES_last − ES_prev_close)
ATM
7705
Straddle 29.15 · IV 16.7%
ATM IV = avg call/put chain iv at K nearest S* · CBOE options JSON · not VIX
SPX prior close
7,745.06
CBOE prev_close · chain px 7,745.06 · not band center
EM H · static / dynamic
S 100 / D 99 pt
Static @ prior 7,745.06 (σ 72.3) · Dynamic @ S* 7,705.81 (σ 71.9)
c=1.382 · VIX 14.81 (index · not ATM IV) · ATM K7705

Bands

MethodEM±LowerUpperNote
Straddle 29.15 7,676.66 7,734.96 S* ± ATM straddle
ATM IV 81.21 7,624.60 7,787.02 S* × (atm_iv/100) × sqrt(1/252) · t=1/252 · source: chain iv (CBOE JSON), not VIX
Exp 2026-08-18 · 2026-08-18 09:29:20 ET · S* on SPX scale · ES for discovery/basis only · observation only

Week-from-close · Roll 5d (risk)

Week-from-close
—
pre — · Fri · T=
pre ± next-Friday ATM straddle
Roll 5 NYSE days
—
· IV —
risk · not a ticket
Term comparison 0DTE · week · month
Same chain · Spot 7,745.06 · Same CBOE chain · 0DTE / week / month · Wall + Max Pain + ATM IV + 25Δ skew
Term Exp C-Wall P-Wall MaxPain ATM IV 25Δ Skew 25Δ P/C
0DTE / nearest 2026-08-18 7,990 7,635 7,760 15.3% 2.8 18.1/15.3
This week 2026-08-21 8,000 7,500 7,700 11.0% 2.7 13.1/10.4
This month 2026-08-24 7,900 7,600 7,730 9.3% 2.2 11.1/8.9
Term comparison · skew_25d = 25Δ put IV% − call IV% · not the same as P/C · observation only · 2026-08-18 09:29:23 ET
SPX term IV month ATM · IV30 · 0DTE spread
Chain ATM IV · DTE = calendar days ET to expiration · not the VIX strip · 0DTE slope = vol-point spread, not dIV/dT · Spot 7,745.06
Measure IV Algorithm Detail
0DTE ATM 15.32% nearest expiration ATM Exp 2026-08-18 · DTE -53 · K 7745
Month ATM 9.29% monthly OPEX ATM Exp 2026-08-24 · DTE -47 · K 7745
IV30 — linear_t IV1 + w*(IV2-IV1), w=(30-T1)/(T2-T1)
IV30 — variance_t v=IV^2*T interpolated; IV30=sqrt(v30/30)
0DTE − IV30 — spread vs linear_t vol points · IV_0DTE − IV30_linear_t
0DTE − IV30 — spread vs variance_t vol points · IV_0DTE − IV30_variance_t
0DTE − Month +6.03 spread vs month ATM vol points · IV_0DTE − month ATM
0DTE − Week +4.34 spread vs week ATM vol points · IV_0DTE − week ATM
0DTE 25Δ skew +2.82 strike slope put 18.13% / call 15.31% · 25Δ put IV − call IV
Bracket term_compare_fallback · short T— · long T— · VIX — · Display fallback from term_compare (run getspxoi for native iv_term) · 2026-08-18 09:29:23 ET
IV smile target + near window · Call / Put / mid % · exp 2026-08-18 · ATM K7745 15.3% · not a 3D surface

PART 1 — OI Structural Analysis

Influence hint (not a signal): mass near spot weighs more; far large OI matters less unless vol expands the splash. · EM H≈100pt (c=1.382 · σ72.3 · VIX 14.81 · vix) · spot 7,745.06 · near ≤0.5H · mid ≤H · far >H

Primary Walls

Call Wall 7990 · share 8.0% · +245pt · w=0.29 · far
Put Wall 7635 · share 11.8% · -110pt · w=0.48 · far

Max Pain / OI Pivot

Max Pain 7760 · +15pt · w=0.87 · near
OI Pivot 7635 · -110pt · w=0.48 · far
Max +Net 7990 (+245pt · w=0.29 · far) · Max −Net 7635 (-110pt · w=0.48 · far)
Expiration OI (full chain) · not on this report — re-run structure after 1.7.19 r1

OI Clusters (hint)

≥4 consecutive strikes · side OI ≥ max(1.5×median, threshold) — buffer zones, not primary walls. List notes: C-BAND / P-BAND.
Call: none
Put: none

OI Chain

Part 1 · click Strike / Call OI / Put OI / Net OI to sort (Note fixed)
Default: OI ≥ 1000 · total 121 / significant 73 / low OI 48 Significant ★★ High Low OI (when expanded)
Strike ↕ Call OI ↕ Put OI ↕ Net OI ↕ Note
7,400.0 21 863 -842
7,405.0 12 57 -45
7,410.0 15 294 -279
7,415.0 8 1,500 -1492
7,420.0 49 256 -207
7,425.0 17 5,256 -5239
7,430.0 52 173 -121
7,435.0 6 143 -137
7,440.0 39 395 -356
7,445.0 20 2,331 -2311
7,450.0 180 465 -285
7,455.0 20 173 -153
7,460.0 24 400 -376
7,465.0 5 217 -212
7,470.0 20 277 -257
7,475.0 19 1,029 -1010
7,480.0 27 540 -513
7,485.0 9 276 -267
7,490.0 15 133 -118
7,495.0 18 389 -371
7,500.0 102 852 -750
7,505.0 9 72 -63
7,510.0 30 2,421 -2391
7,515.0 15 274 -259
7,520.0 25 459 -434
7,525.0 50 2,635 -2585
7,530.0 77 682 -605
7,535.0 7 10,284 -10277 ② 2nd PUT P-BAND ★★
7,540.0 60 2,224 -2164 P-BAND
7,545.0 25 5,602 -5577 ③ 3rd PUT P-BAND
7,550.0 341 3,844 -3503 P-BAND
7,555.0 19 404 -385
7,560.0 103 169 -66
7,565.0 44 627 -583
7,570.0 38 533 -495
7,575.0 79 2,333 -2254
7,580.0 55 475 -420
7,585.0 39 781 -742
7,590.0 93 3,044 -2951
7,595.0 39 1,295 -1256
7,600.0 342 1,954 -1612
7,605.0 11 788 -777
7,610.0 54 1,175 -1121
7,615.0 28 838 -810
7,620.0 77 441 -364
7,625.0 89 2,247 -2158
7,630.0 61 1,473 -1412
7,635.0 29 15,908 -15879 ① MAX PUT ▼ MAX -NET ★★
7,640.0 64 753 -689
7,645.0 13 542 -529
7,650.0 165 5,414 -5249 P-BAND
7,655.0 33 1,483 -1450 P-BAND
7,660.0 126 1,883 -1757 P-BAND
7,665.0 28 1,304 -1276 P-BAND
7,670.0 146 1,536 -1390 P-BAND
7,675.0 193 2,100 -1907 P-BAND
7,680.0 119 1,611 -1492 P-BAND
7,685.0 31 1,630 -1599 P-BAND
7,690.0 188 1,555 -1367 P-BAND
7,695.0 63 1,623 -1560 P-BAND
7,700.0 515 3,928 -3413 P-BAND
7,705.0 174 1,159 -985 P-BAND
7,710.0 119 2,468 -2349 P-BAND
7,715.0 119 1,677 -1558 P-BAND
7,720.0 115 1,904 -1789 P-BAND
7,725.0 363 2,913 -2550 P-BAND
7,730.0 688 1,852 -1164 P-BAND
7,735.0 354 1,320 -966 P-BAND
7,740.0 493 1,565 -1072 P-BAND
7,745.0 661 1,204 -543 P-BAND
7,750.0 1,484 3,333 -1849 P-BAND
7,755.0 1,395 1,148 +247 P-BAND
7,760.0 1,163 1,339 -176 P-BAND
7,765.0 687 696 -9
7,770.0 1,388 1,333 +55 C-BAND
7,775.0 2,030 1,911 +119 C-BAND
7,780.0 2,327 701 +1626 C-BAND
7,785.0 2,192 342 +1850 C-BAND
7,790.0 1,641 361 +1280 C-BAND
7,795.0 2,054 244 +1810 C-BAND
7,800.0 3,340 1,498 +1842 ③ 3rd CALL C-BAND
7,805.0 2,815 221 +2594 C-BAND
7,810.0 2,127 250 +1877 C-BAND
7,815.0 1,559 80 +1479 C-BAND
7,820.0 1,967 135 +1832 C-BAND
7,825.0 2,482 179 +2303 C-BAND
7,830.0 2,729 115 +2614 C-BAND
7,835.0 1,174 62 +1112 C-BAND
7,840.0 1,578 121 +1457 C-BAND
7,845.0 1,650 26 +1624 C-BAND
7,850.0 2,876 143 +2733 C-BAND
7,855.0 1,265 33 +1232 C-BAND
7,860.0 939 268 +671
7,865.0 974 11 +963
7,870.0 1,281 14 +1267
7,875.0 2,935 11 +2924
7,880.0 1,791 43 +1748
7,885.0 858 8 +850
7,890.0 2,923 31 +2892 C-BAND
7,895.0 3,013 1 +3012 C-BAND
7,900.0 7,771 5 +7766 ② 2nd CALL C-BAND
7,905.0 1,146 1 +1145 C-BAND
7,910.0 1,758 2 +1756 C-BAND
7,915.0 1,361 0 +1361 C-BAND
7,920.0 514 5 +509
7,925.0 945 0 +945
7,930.0 440 0 +440
7,935.0 172 0 +172
7,940.0 617 1 +616
7,945.0 375 0 +375
7,950.0 1,245 2 +1243
7,955.0 297 0 +297
7,960.0 1,202 0 +1202
7,965.0 458 0 +458
7,970.0 688 0 +688
7,975.0 1,850 1 +1849
7,980.0 740 0 +740
7,985.0 811 0 +811
7,990.0 7,809 0 +7809 ① MAX CALL ▲ MAX +NET
7,995.0 59 0 +59
8,000.0 2,928 5 +2923
2026-08-18 SPX O 7,700.04 · H 7,713.95 · L 7,688.63 · C 7,691.76 prior C — VIX 15.84 prior — OHLC Ammo · chain not patched · SPX:ammo_eod · VIX:ammo_eod

PART 1 ADDITION — Options OI Matrix

Hide K Default: Call or Put > 1000 · OI/1000 · center group = 7700 Net+ Net− ★★ rank
Options OI
k 7500 7600 7700 7800 7900
C P C P C P C P C P
00 0.1 0.8 0.3 1.9 0.5 3.9 3.3 1.4 7.7 0.0
05 0.0 0.0 0.0 0.7 0.1 1.1 2.8 0.2 1.1 0.0
10 0.0 2.4 0.0 1.1 0.1 2.4 2.1 0.2 1.7 0.0
15 0.0 0.2 0.0 0.8 0.1 1.6 1.5 0.0 1.3 0
20 0.0 0.4 0.0 0.4 0.1 1.9 1.9 0.1 0.5 0.0
25 0.0 2.6 0.0 2.2 0.3 2.9 2.4 0.1 0.9 0
30 0.0 0.6 0.0 1.4 0.6 1.8 2.7 0.1 0.4 0
35 0.0 10.2 0.0 15.9 0.3 1.3 1.1 0.0 0.1 0
40 0.0 2.2 0.0 0.7 0.4 1.5 1.5 0.1 0.6 0.0
45 0.0 5.6 0.0 0.5 0.6 1.2 1.6 0.0 0.3 0
50 0.3 3.8 0.1 5.4 1.4 3.3 2.8 0.1 1.2 0.0
55 0.0 0.4 0.0 1.4 1.3 1.1 1.2 0.0 0.2 0
60 0.1 0.1 0.1 1.8 1.1 1.3 0.9 0.2 1.2 0
65 0.0 0.6 0.0 1.3 0.6 0.6 0.9 0.0 0.4 0
70 0.0 0.5 0.1 1.5 1.3 1.3 1.2 0.0 0.6 0
75 0.0 2.3 0.1 2.1 2.0 1.9 2.9 0.0 1.8 0.0
80 0.0 0.4 0.1 1.6 2.3 0.7 1.7 0.0 0.7 0
85 0.0 0.7 0.0 1.6 2.1 0.3 0.8 0.0 0.8 0
90 0.0 3.0 0.1 1.5 1.6 0.3 2.9 0.0 7.8 0
95 0.0 1.2 0.0 1.6 2.0 0.2 3.0 0.0 0.0 0

OI Net Matrix (C−P by strike · heat like Volume)

Hide K Cell = Call OI − Put OI (K) · green = net call · red = net put · default deeper = larger |net| · near-base = |net|×w(|K−base|), H=100pt (c=1.382·σ72.3 · VIX 14.81 · vix) Net+ Net−
OI Net (C−P)
k 7500 7600 7700 7800 7900
00 −0.7 −1.6 −3.4 +1.8 +7.7
05 −0.0 −0.7 −0.9 +2.5 +1.1
10 −2.3 −1.1 −2.3 +1.8 +1.7
15 −0.2 −0.8 −1.5 +1.4 +1.3
20 −0.4 −0.3 −1.7 +1.8 +0.5
25 −2.5 −2.1 −2.5 +2.3 +0.9
30 −0.6 −1.4 −1.1 +2.6 +0.4
35 −10.2 −15.8 −0.9 +1.1 +0.1
40 −2.1 −0.6 −1.0 +1.4 +0.6
45 −5.5 −0.5 −0.5 +1.6 +0.3
50 −3.5 −5.2 −1.8 +2.7 +1.2
55 −0.3 −1.4 +0.2 +1.2 +0.2
60 −0.0 −1.7 −0.1 +0.6 +1.2
65 −0.5 −1.2 −0.0 +0.9 +0.4
70 −0.4 −1.3 +0.0 +1.2 +0.6
75 −2.2 −1.9 +0.1 +2.9 +1.8
80 −0.4 −1.4 +1.6 +1.7 +0.7
85 −0.7 −1.5 +1.8 +0.8 +0.8
90 −2.9 −1.3 +1.2 +2.8 +7.8
95 −1.2 −1.5 +1.8 +3.0 +0.0

OI Total Matrix (C+P by strike · same heat modes)

Hide K Cell = Call OI + Put OI (K) · amber heat · deeper = larger total · independent Near-base · same EM H=100pt · base 7700
OI Total (C+P)
k 7500 7600 7700 7800 7900
00 0.9 2.2 4.4 4.8 7.7
05 0.0 0.7 1.3 3.0 1.1
10 2.4 1.2 2.5 2.3 1.7
15 0.2 0.8 1.7 1.6 1.3
20 0.4 0.5 2.0 2.1 0.5
25 2.6 2.3 3.2 2.6 0.9
30 0.7 1.5 2.5 2.8 0.4
35 10.2 15.9 1.6 1.2 0.1
40 2.2 0.8 2.0 1.6 0.6
45 5.6 0.5 1.8 1.6 0.3
50 4.1 5.5 4.8 3.0 1.2
55 0.4 1.5 2.5 1.2 0.2
60 0.2 2.0 2.5 1.2 1.2
65 0.6 1.3 1.3 0.9 0.4
70 0.5 1.6 2.7 1.2 0.6
75 2.4 2.2 3.9 2.9 1.8
80 0.5 1.7 3.0 1.8 0.7
85 0.8 1.6 2.5 0.8 0.8
90 3.1 1.7 2.0 2.9 7.8
95 1.3 1.6 2.2 3.0 0.0
OI Tape C/P in K · this pull · next listed expirations · this week · session + next NYSE days
Strikes Hide K Cells = Call / Put · unit K · session-day column = base, no fill · green / red = other columns vs that C+P · empty = ·
OI Tape
k 08-11 08-12 08-13 08-14 08-17 08-18 08-19 08-20 08-21 08-24
7300 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.8 ·/3.8 6.1/29.5 ·/1.2
7305 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.4 ·/0.1 ·/0.4 ·/·
7310 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.2 ·/0.3 0.3/1.0 ·/2.0
7315 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.3 ·/0.1 ·/0.7 ·/·
7320 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.4 ·/0.3 0.1/0.9 ·/0.1
7325 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.5 ·/0.1 1.2/4.8 ·/0.3
7330 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.9 ·/0.1 0.1/1.2 ·/0.1
7335 ·/· ·/· ·/· ·/· ·/· ·/· ·/· ·/0.3 ·/1.5 ·/·
7340 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.2 ·/· 0.1/1.5 ·/0.2
7345 ·/· ·/· ·/· ·/· ·/· ·/· ·/· ·/· 0.1/0.9 ·/3.5
7350 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.2 ·/0.3 5.0/16.0 ·/3.4
7355 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.1 ·/· 0.2/0.7 ·/0.2
7360 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.2 ·/0.3 0.2/1.2 ·/0.1
7365 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.1 ·/0.6 ·/2.5 ·/6.1
7370 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.3 ·/0.1 0.2/1.6 0.2/0.2
7375 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.3 ·/0.6 2.4/11.4 0.1/7.7
7380 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.1 ·/0.1 0.3/4.1 ·/3.1
7385 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.1 ·/· 0.1/3.7 ·/0.3
7390 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.4 ·/0.2 0.4/1.0 ·/0.5
7395 ·/· ·/· ·/· ·/· ·/· ·/· ·/0.2 ·/0.1 0.3/1.2 ·/0.1
7400 ·/1.6 0.6/3.7 0.2/1.0 0.5/3.6 0.1/1.1 ·/0.8 0.1/3.1 ·/0.6 10.1/23.2 0.1/1.5
7405 ·/· ·/0.2 ·/· ·/0.6 ·/0.1 ·/· ·/0.4 ·/0.1 0.3/1.3 ·/0.6
7410 ·/0.1 ·/0.4 ·/0.2 ·/0.7 ·/0.6 ·/0.2 ·/0.2 ·/0.1 0.3/2.6 ·/1.9
7415 ·/· ·/0.2 ·/0.1 ·/0.4 ·/0.2 ·/1.5 ·/2.6 ·/0.1 0.1/1.5 ·/0.1
7420 ·/0.1 ·/0.1 ·/0.2 0.1/0.5 ·/0.4 ·/0.2 ·/0.6 ·/0.3 0.7/0.9 ·/0.3
7425 ·/1.0 ·/1.8 ·/0.5 0.1/2.4 0.2/1.4 ·/5.2 ·/5.3 ·/0.1 1.7/3.8 0.1/2.0
7430 ·/0.2 ·/0.4 ·/0.3 0.1/0.9 ·/0.2 ·/0.1 ·/0.2 ·/0.3 0.7/1.9 ·/0.4
7435 ·/0.1 ·/2.1 ·/0.4 ·/2.1 ·/· ·/0.1 ·/4.6 ·/0.3 0.2/2.8 ·/3.5
7440 0.1/0.4 ·/0.5 ·/2.9 0.1/0.6 ·/0.4 ·/0.3 ·/0.4 ·/1.6 0.4/1.7 ·/0.5
7445 ·/0.4 ·/0.2 ·/0.3 0.5/1.1 ·/0.4 ·/2.3 ·/0.2 ·/0.1 0.2/1.7 ·/0.2
7450 0.1/3.9 0.1/5.5 ·/1.8 1.0/3.3 0.1/1.6 0.1/0.4 ·/1.9 0.2/3.5 10.0/18.1 ·/2.6
7455 ·/0.2 ·/0.5 ·/0.2 ·/0.5 ·/0.6 ·/0.1 ·/4.8 ·/0.1 0.3/5.5 ·/0.6
7460 0.1/0.3 ·/6.6 0.2/0.3 0.2/0.6 ·/0.5 ·/0.4 ·/3.5 ·/3.6 0.7/4.2 ·/0.4
7465 ·/0.2 ·/1.7 ·/0.6 ·/0.8 ·/0.2 ·/0.2 ·/3.2 ·/3.3 0.3/2.3 ·/7.2
7470 0.1/0.3 ·/0.5 ·/0.2 0.1/3.2 ·/0.3 ·/0.2 ·/0.2 ·/0.7 0.6/4.5 0.1/0.6
7475 ·/7.0 1.8/4.1 0.1/9.6 0.1/0.7 ·/4.3 ·/1.0 ·/2.1 ·/0.5 4.7/13.4 0.1/11.5
7480 0.3/0.4 0.1/0.3 ·/0.5 0.2/2.0 0.1/0.9 ·/0.5 ·/2.6 ·/2.9 7.1/3.4 ·/0.4
7485 0.1/4.2 ·/1.7 ·/0.2 0.1/0.5 ·/0.1 ·/0.2 ·/0.5 ·/7.7 0.3/3.8 ·/0.7
7490 ·/0.4 0.1/0.3 ·/0.2 0.1/0.9 ·/0.5 ·/0.1 ·/0.8 ·/0.4 0.5/2.6 ·/0.7
7495 ·/0.3 ·/1.2 ·/0.2 0.1/0.5 ·/1.6 ·/0.3 ·/0.3 ·/4.2 0.5/4.3 ·/0.4
7500 0.5/4.3 1.9/3.4 0.7/8.4 2.4/8.5 1.1/5.8 0.1/0.8 0.1/3.5 ·/3.8 40.6/52.4 0.2/3.2
7505 0.2/0.2 ·/0.4 ·/0.4 0.1/2.2 ·/0.3 ·/· ·/1.4 ·/0.6 0.4/2.0 ·/0.7
7510 0.1/0.3 ·/0.4 0.3/2.9 0.3/1.2 0.1/0.7 ·/2.4 ·/1.1 ·/0.7 1.0/3.8 0.1/1.3
7515 ·/0.2 ·/0.4 ·/0.4 0.3/1.5 ·/0.8 ·/0.2 ·/4.1 ·/0.5 0.4/15.9 ·/1.2
7520 0.2/0.6 ·/3.4 ·/0.4 0.5/2.2 0.1/0.8 ·/0.4 ·/1.1 ·/1.0 1.6/16.5 0.1/1.1
7525 0.1/0.9 0.1/3.0 0.6/0.6 0.9/14.5 1.1/5.5 ·/2.6 ·/6.3 ·/0.6 3.6/9.1 0.2/2.1
7530 0.1/0.5 ·/2.7 3.1/0.5 0.3/4.2 0.1/0.6 ·/0.6 0.5/1.2 0.1/0.6 1.0/3.2 ·/0.8
7535 0.2/0.2 ·/2.1 ·/0.4 0.5/2.2 ·/6.3 ·/10.2 ·/4.8 ·/0.7 1.3/3.0 ·/0.6
7540 ·/0.3 1.0/4.6 0.3/0.4 0.9/1.5 0.1/1.9 ·/2.2 ·/0.7 ·/2.0 1.4/3.3 0.6/1.4
7545 ·/0.2 0.1/0.5 ·/0.5 ·/1.9 ·/11.7 ·/5.6 ·/5.9 ·/1.5 1.6/3.8 ·/1.8
7550 0.9/4.9 0.1/6.7 2.8/5.3 4.2/7.4 0.8/9.6 0.3/3.8 0.1/2.8 0.1/3.7 19.3/25.1 0.1/2.5
7555 0.1/0.4 0.3/1.3 0.5/0.7 0.1/0.5 ·/0.6 ·/0.4 0.5/2.1 ·/2.3 2.1/3.1 ·/0.8
7560 0.1/0.6 0.1/6.3 0.3/2.1 0.3/0.8 0.1/0.7 0.1/0.1 0.1/1.6 ·/1.6 1.5/3.9 0.1/1.4
7565 0.1/0.3 0.2/2.6 0.1/0.2 0.1/2.7 ·/0.3 ·/0.6 ·/5.0 ·/4.0 0.7/2.5 ·/0.9
7570 0.1/0.4 0.2/0.7 0.1/0.5 0.8/1.6 0.1/0.3 ·/0.5 ·/2.0 ·/4.2 1.1/2.2 0.1/0.9
7575 0.1/10.1 0.9/7.5 0.6/10.1 2.1/1.8 0.2/0.9 ·/2.3 ·/3.8 0.2/1.1 4.9/5.3 0.3/2.9
7580 0.1/0.6 0.2/1.2 0.2/1.8 2.0/2.3 0.1/0.5 ·/0.4 ·/2.0 0.1/0.7 1.7/3.0 0.1/2.8
7585 0.1/1.8 ·/1.3 ·/0.6 0.6/0.9 ·/1.4 ·/0.7 ·/1.5 ·/10.6 1.0/2.7 ·/1.4
7590 ·/1.0 0.3/1.3 ·/1.3 1.0/3.2 0.1/0.7 ·/3.0 ·/1.6 ·/1.3 0.8/9.4 ·/1.9
7595 ·/0.3 ·/2.6 ·/0.8 0.5/1.4 ·/1.1 ·/1.2 ·/2.0 ·/1.4 1.7/3.5 ·/1.1
7600 0.5/4.4 0.5/5.2 0.5/10.9 3.1/5.8 0.9/4.0 0.3/1.9 1.0/7.5 0.2/3.1 23.8/26.5 0.4/5.6
7605 ·/2.5 ·/0.7 ·/0.4 0.2/1.5 ·/0.6 ·/0.7 ·/1.3 0.1/1.5 0.4/2.4 ·/0.8
7610 0.1/0.4 0.3/2.8 0.3/1.0 0.7/2.6 0.1/1.2 ·/1.1 0.1/1.2 ·/1.6 1.6/3.3 0.1/2.2
7615 ·/0.3 0.1/2.6 ·/1.3 0.6/1.8 ·/1.0 ·/0.8 ·/1.4 ·/1.0 0.6/2.0 ·/2.1
7620 0.3/0.9 0.4/1.7 0.3/1.3 0.8/4.6 0.3/1.1 ·/0.4 ·/4.5 ·/3.4 1.1/3.7 0.1/2.4
7625 0.2/1.5 0.3/2.9 0.1/3.1 1.3/13.8 0.4/5.4 ·/2.2 0.1/2.7 0.1/2.8 3.5/5.7 0.7/1.2
7630 0.2/0.7 0.3/3.0 0.1/1.2 0.3/1.4 ·/1.8 ·/1.4 0.1/4.7 0.1/1.6 1.3/3.7 0.2/4.1
7635 0.1/0.8 0.1/1.1 ·/0.9 0.2/3.7 ·/6.9 ·/15.9 0.1/0.8 ·/2.3 2.2/2.7 ·/1.1
7640 0.2/0.8 0.1/2.3 0.2/1.5 0.9/2.7 0.3/2.0 ·/0.7 0.1/1.3 0.1/1.9 1.9/7.7 0.2/1.9
7645 ·/2.1 ·/3.2 ·/1.0 0.3/1.1 ·/2.3 ·/0.5 ·/2.0 ·/4.2 1.1/2.7 0.3/1.9
7650 0.7/3.4 1.2/7.4 0.3/3.9 2.2/8.1 0.5/9.3 0.1/5.4 0.4/2.8 0.6/4.7 11.1/14.8 0.8/2.1
7655 ·/0.9 0.1/0.9 ·/1.5 0.3/1.4 0.2/1.0 ·/1.4 0.1/1.2 ·/1.2 1.4/2.1 0.3/0.8
7660 0.4/1.8 0.3/1.6 0.4/2.4 0.3/1.4 0.2/1.5 0.1/1.8 0.1/1.8 0.3/2.4 2.9/2.1 0.5/1.2
7665 ·/1.0 0.1/1.0 ·/1.3 ·/3.4 ·/1.2 ·/1.3 ·/1.5 0.1/1.6 1.9/3.3 0.3/0.9
7670 0.2/1.5 0.3/2.7 0.3/2.2 0.4/1.6 0.1/2.0 0.1/1.5 0.1/1.5 0.1/1.6 2.9/2.9 0.6/1.4
7675 0.2/2.2 0.9/3.9 0.6/2.9 1.2/5.2 0.8/2.2 0.1/2.1 0.3/2.0 0.2/2.9 5.1/4.9 1.4/1.3
7680 0.3/1.2 0.1/1.3 0.4/1.4 0.6/1.9 ·/1.5 0.1/1.6 0.2/1.8 0.1/1.6 3.2/2.9 1.5/1.1
7685 0.1/1.0 ·/1.4 ·/1.6 0.1/4.1 0.3/2.2 ·/1.6 0.2/1.4 0.1/1.4 3.5/4.6 0.7/0.7
7690 0.1/1.4 0.2/2.8 0.2/1.6 0.4/1.9 0.1/1.0 0.1/1.5 0.3/1.8 0.2/1.5 3.3/2.0 0.7/1.3
7695 0.1/3.1 0.1/1.2 0.2/1.8 0.1/2.9 0.1/0.9 ·/1.6 0.7/2.3 0.4/1.9 2.6/2.7 0.6/0.3
7700 1.2/5.9 1.1/4.2 0.9/4.2 2.9/6.7 1.0/6.3 0.5/3.9 2.6/4.4 1.4/3.3 28.3/21.5 4.3/5.2
7705 0.2/2.0 0.1/0.7 ·/1.5 0.1/1.1 ·/1.3 0.1/1.1 1.0/1.0 0.5/1.3 2.2/1.8 1.6/0.3
7710 0.5/1.7 0.3/1.2 0.3/2.0 0.9/2.3 0.2/1.5 0.1/2.4 1.7/0.6 0.9/1.2 3.1/2.2 5.2/0.3
7715 0.1/2.9 0.2/0.7 0.2/2.8 0.2/2.1 ·/0.9 0.1/1.6 1.6/0.5 0.9/1.1 4.9/2.0 1.7/0.3
7720 0.3/1.6 0.5/1.0 0.2/1.2 0.7/1.6 0.2/1.9 0.1/1.9 0.9/5.4 0.7/0.8 4.6/2.0 2.3/0.4
7725 0.3/2.1 1.6/2.3 0.6/2.8 2.6/4.5 2.6/2.3 0.3/2.9 5.8/4.2 1.4/0.9 7.4/5.5 1.8/0.7
7730 0.3/1.2 1.0/1.6 0.3/1.3 0.8/1.8 0.2/2.1 0.6/1.8 2.2/0.8 1.1/0.7 4.5/1.4 2.4/0.3
7735 0.5/1.2 1.0/0.8 0.3/1.0 0.5/1.9 0.1/1.2 0.3/1.3 1.9/3.3 1.0/0.6 4.2/1.1 1.5/0.2
7740 0.7/1.1 0.9/0.6 0.7/0.9 0.9/2.1 0.3/5.5 0.4/1.5 1.7/0.6 2.4/0.7 4.5/2.4 2.2/0.9
7745 0.7/1.3 1.0/0.6 0.8/1.1 2.2/3.2 0.2/1.5 0.6/1.2 1.5/1.5 2.0/0.3 2.7/1.3 1.9/0.1
7750 2.5/2.2 1.9/1.2 3.1/2.0 4.7/6.2 1.1/3.8 1.4/3.3 4.4/3.9 2.5/2.0 22.9/14.0 6.6/1.8
7755 1.1/0.9 1.1/0.6 1.1/0.5 1.8/1.2 0.6/5.4 1.3/1.1 1.3/0.8 4.0/0.5 2.5/0.9 2.9/0.2
7760 1.6/0.7 1.7/0.9 1.7/0.4 1.4/2.7 0.4/2.0 1.1/1.3 2.1/0.4 5.0/0.2 5.0/1.0 1.4/0.3
7765 1.5/0.7 1.1/0.4 0.8/0.3 0.5/1.6 0.3/0.8 0.6/0.6 1.5/0.4 1.6/0.2 2.2/0.7 1.2/0.1
7770 1.2/0.4 1.3/0.3 1.0/0.2 1.0/1.9 0.8/1.0 1.3/1.3 2.6/0.3 3.0/0.3 4.9/2.2 1.3/0.2
7775 1.4/0.4 2.5/0.3 1.6/0.3 2.8/2.8 1.6/3.4 2.0/1.9 4.1/0.4 3.5/0.2 13.9/3.3 1.3/0.1
7780 3.0/0.1 3.3/0.2 2.6/0.1 1.7/1.5 1.4/1.2 2.3/0.7 1.8/0.4 2.1/0.3 5.4/1.5 2.0/0.2
7785 1.5/· 2.2/0.1 1.6/· 1.0/0.6 2.0/1.2 2.1/0.3 1.0/0.2 2.1/0.1 4.2/0.8 1.8/0.1
7790 1.2/0.1 1.3/0.2 2.0/0.1 6.3/1.5 1.2/0.8 1.6/0.3 1.4/0.2 1.2/0.2 4.0/0.7 2.5/0.1
7795 1.3/0.1 1.0/· 0.8/· 1.6/1.0 1.2/0.5 2.0/0.2 1.4/0.1 0.8/0.2 2.1/0.3 9.6/0.1
7800 3.2/0.3 6.2/0.5 6.3/0.5 8.3/3.4 3.9/1.8 3.3/1.4 3.5/0.5 3.3/0.2 30.2/16.3 3.8/0.6
7805 2.0/· 1.0/· 2.8/· 1.7/0.8 2.2/0.4 2.8/0.2 3.0/0.1 3.9/0.2 2.7/0.4 0.8/0.1
7810 2.5/· 7.1/· 1.8/· 7.6/0.4 2.7/0.7 2.1/0.2 0.6/0.1 1.7/· 6.7/0.4 2.7/0.1
7815 1.1/· 1.0/· 1.1/· 1.6/0.3 0.9/0.1 1.5/· 0.7/· 0.6/· 7.2/0.2 0.9/·
7820 2.3/· 4.2/· 2.9/· 3.4/0.3 1.6/0.1 1.9/0.1 0.7/· 0.9/· 4.1/0.4 0.9/·
7825 3.3/· 2.2/· 1.9/0.1 6.9/0.6 2.9/0.1 2.4/0.1 1.1/· 4.2/· 9.4/0.2 6.2/·
7830 2.7/· 1.2/· 2.8/· 5.0/0.1 1.4/· 2.7/0.1 1.4/· 1.2/· 2.7/0.2 0.6/·
7835 0.8/· 0.8/· 0.7/· 2.6/0.1 1.2/· 1.1/· 2.3/· 7.2/· 1.9/· 2.5/·
7840 1.1/· 2.5/· 1.0/· 2.9/· 1.4/· 1.5/0.1 0.6/· 1.1/· 1.6/0.1 0.8/·
7845 0.7/· 0.8/· 0.6/· 2.3/· 1.4/· 1.6/· 0.5/· 5.5/· 1.9/0.2 0.5/·
7850 2.8/· 5.6/0.1 1.7/· 5.8/0.1 10.1/· 2.8/0.1 7.2/· 3.0/· 8.4/0.3 2.4/0.1
7855 1.9/· 1.3/· 0.7/· 2.5/· 2.6/· 1.2/· 1.4/· 1.2/· 1.0/0.1 0.4/·
7860 0.6/· 1.3/· 0.8/· 3.5/0.2 1.8/0.2 0.9/0.2 1.1/0.2 1.8/0.3 3.0/· 1.4/·
7865 0.6/· 0.9/· 0.7/· 2.9/· 1.2/· 0.9/· 1.1/· 0.2/· 1.5/· 0.7/·
7870 0.4/· 0.9/· 0.9/· 3.2/· 1.1/· 1.2/· 1.6/· 0.4/· 3.1/· 1.1/·
7875 0.6/0.2 1.4/0.2 4.4/0.2 2.9/· 6.3/· 2.9/· 2.2/· 0.6/· 10.1/0.1 0.6/·
7880 1.0/· 1.1/· 1.0/· 3.6/· 2.4/· 1.7/· 2.1/· 0.4/· 6.8/· 0.3/·
7885 0.5/· 0.8/· 6.7/· 5.9/· 1.5/· 0.8/· 1.8/· 1.9/· 0.8/· 0.3/·
7890 0.3/· 5.6/· 0.5/· 6.3/· 4.1/· 2.9/· 0.7/· 0.8/· 4.3/· 2.3/·
7895 0.3/· 0.8/· 0.6/· 1.3/· 1.4/· 3.0/· 0.4/· 0.8/· 1.8/· 9.3/·
7900 5.8/· 5.9/· 8.8/· 12.7/0.1 10.5/· 7.7/· 1.3/· 5.6/· 18.8/0.4 2.8/·
7905 1.0/· 0.4/· 1.0/· 0.9/· 3.0/· 1.1/· ·/· ·/· ·/· ·/·
7910 0.5/· 3.2/· 0.7/· 2.2/· 1.6/· 1.7/· ·/· ·/· ·/· ·/·
7915 3.8/· 6.4/· 2.2/· 1.8/· 0.9/· 1.3/· ·/· ·/· ·/· ·/·
7920 1.9/· 4.5/· 4.4/· 1.6/· 1.0/· 0.5/· ·/· ·/· ·/· ·/·
7925 0.5/· 7.5/· 6.7/· 4.5/· 7.6/· 0.9/· ·/· ·/· ·/· ·/·
7930 1.7/· 0.5/· 1.3/· 2.3/· 1.8/· 0.4/· ·/· ·/· ·/· ·/·
7935 0.3/· 0.3/· 0.7/· 2.5/· 0.6/· 0.1/· ·/· ·/· ·/· ·/·
7940 0.3/· 0.3/· 1.0/· 4.1/· 4.0/· 0.6/· ·/· ·/· ·/· ·/·
7945 0.5/· 0.4/· 0.4/· 1.9/· 0.2/· 0.3/· ·/· ·/· ·/· ·/·
7950 0.6/· 7.5/· 3.0/· 6.3/0.1 9.5/· 1.2/· ·/· ·/· ·/· ·/·
7955 0.2/· 0.3/· 0.2/· 0.4/· 0.5/· 0.2/· ·/· ·/· ·/· ·/·
7960 0.2/· 0.6/· 0.5/· 2.0/· 0.6/· 1.2/· ·/· ·/· ·/· ·/·
7965 0.1/· 0.4/· 0.4/· 0.3/· 0.4/· 0.4/· ·/· ·/· ·/· ·/·
7970 0.4/· 3.1/· 0.8/· 1.2/· 0.6/· 0.6/· ·/· ·/· ·/· ·/·
7975 4.7/· 0.6/· 6.6/· 4.3/· 0.8/· 1.8/· ·/· ·/· ·/· ·/·
7980 0.1/· 0.2/· 0.1/· 3.3/· 0.6/· 0.7/· ·/· ·/· ·/· ·/·
7985 0.1/· 0.5/· 0.1/· 1.7/· ·/· 0.8/· ·/· ·/· ·/· ·/·
7990 2.1/· 1.7/· 0.9/· 0.8/· 0.4/· 7.8/· ·/· ·/· ·/· ·/·
7995 ·/· ·/· ·/· ·/· ·/· ·/· ·/· ·/· ·/· ·/·
8000 7.5/· 8.1/· 7.1/· 9.6/2.7 4.4/· 2.9/· ·/· ·/· ·/· ·/·
ΔOI by strike vs prior structure session 2026-08-17 · grouped bars Call / Put ΔOI (K) · matrix window · zero line · expiration differs (prior 2026-08-17 vs 2026-08-18) — treat with care

PART 2 — GEX (full expiration chain)

Net GEX -19.88B · NEGATIVE gamma (trend/amplify bias)
GEX Call Wall 7750
GEX Put Wall 7700
Zero Gamma (Flip-A) 7400 · cum Net_GEX
Zero Gamma (Flip-B) n/a · no zero cross / needs re-run
Call strength 6.88× VERY STRONG · Put strength 12.69× VERY STRONG
GEX profile target-exp full chain · series cropped to Part1 window · Flip-A = cum Net_GEX · unit B (proxy)
No GEX profile on this report — re-run structure after 1.7.19 r1

Copy-ready Key Levels

Spot 7745.06 | PutWall 7635 | CallWall 7990 | MaxPain 7760 | OIPivot 7635 | GEX-Put 7700 | GEX-Call 7750 | ZeroG 7400