LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile
LUKE DOM WALKER

@lukedomwalker

Dealer flow & gamma | Building tools for traders | /ES scalper | ex-SWE @AWS | housemoney.finance/waitlist

ID: 1281288172383555585

linkhttps://substack.com/@housemoneyhq calendar_today09-07-2020 18:04:48

655 Tweet

242 Followers

29 Following

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

How to learn trivial ML to backtest & trade profitably: 1. Stop predicting. Start labeling events. 2. Aggregate first. Model second. 3. Logistic regression > fancy models. 4. Purged CV. No leakage. 5. Size up when edge > 0. Simple > sexy. …Then give it all away.

How to learn trivial ML to backtest & trade profitably:

1. Stop predicting. Start labeling events.

2. Aggregate first. Model second.

3. Logistic regression > fancy models.

4. Purged CV. No leakage.

5. Size up when edge > 0.

Simple > sexy.

…Then give it all away.
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

Computer Science Trading Dealer Hedging Options Volatility Machine Learning AI Securing GPUs Derivatives Mathematics Physics GOD

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F GEX Update 📊 • Call Resistance: 7100 (0DTE: 7000) • Put Support: 6940 (0DTE: 6900) • 1D Range: 6879 – 7000 • Distance to HVL: 0.15% Gamma Condition: Positive Net GEX: +36.6M Total GEX: 2.72B IV30: 13.85% (compressed) Dealers still long gamma →

$SPX / $ES_F GEX Update 📊

• Call Resistance:
7100 (0DTE: 7000)

• Put Support:
6940 (0DTE: 6900)

• 1D Range: 
6879 – 7000

• Distance to HVL: 
0.15%

Gamma Condition:
Positive

Net GEX:
+36.6M

Total GEX: 
2.72B

IV30:
13.85% (compressed)

Dealers still long gamma →
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F Gamma Condition: Positive → dealers likely dampening volatility. • P/C OI: 3.44M / 6.40M • Total GEX: 2.72B • Net GEX: +36.6M • Expiring GEX: 11.9M • 30D IV: 13.85% • 1D Exp Move: ±0.87% Key Levels: 🔴 Call Resistance: 7000 (0DTE) / 7100 🟢 Put

$SPX / $ES_F

Gamma Condition: 
Positive → dealers likely dampening volatility.

• P/C OI: 3.44M / 6.40M

• Total GEX: 2.72B

• Net GEX: +36.6M

• Expiring GEX: 11.9M

• 30D IV: 13.85%

• 1D Exp Move: ±0.87%

Key Levels:
🔴 Call Resistance: 7000 (0DTE) / 7100

🟢 Put
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

Reminder: 🧨 $SPX monthly #OPEX is Friday (the 20th) and it’s AM-settled. Tomorrow (the 19th) is positioning day. Into the close + overnight you’ll likely see hedges adjusting ahead of the morning settlement print. That opening auction Friday can be volatile as dealers unwind

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F Positive Gamma with 30D IV at 13.85%. What to expect: • Dealers long gamma → sell rips, buy dips • Volatility suppression likely • Expected move ±0.87% (≈ 6880–7000 range) Key levels: • 7000 = 0DTE call wall / 1D max • 6900 = 0DTE put support • 6950

$SPX / $ES_F 

Positive Gamma with 30D IV at 13.85%.

What to expect:

• Dealers long gamma → sell rips, buy dips

• Volatility suppression likely

• Expected move ±0.87% (≈ 6880–7000 range)

Key levels:
• 7000 = 0DTE call wall / 1D max
• 6900 = 0DTE put support
• 6950
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F Spot: 6947 HVL: 7000 (0.15% away) Gamma Condition: Positive 1D Exp Move: ±0.87% IV30: 13.85% Call Resistance: 7100 (7000 0DTE) Put Support: 6940 (6900 0DTE) Total GEX: 2.7B Net GEX: +36M (balanced) P/C GEX: 0.97 P/C DEX: 0.47 Dealers long gamma → hedging dampens

$SPX / $ES_F

Spot: 6947
HVL: 7000 (0.15% away)
Gamma Condition: Positive
1D Exp Move: ±0.87%
IV30: 13.85%

Call Resistance: 7100 (7000 0DTE)
Put Support: 6940 (6900 0DTE)

Total GEX: 2.7B
Net GEX: +36M (balanced)
P/C GEX: 0.97
P/C DEX: 0.47

Dealers long gamma → hedging dampens
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F GEX Update: Positive gamma regime with spot sitting ~0.15% from HVL → still pinned environment unless 6900 breaks. Call Resistance: 7000 (0DTE) / 7100 Put Support: 6900 (0DTE) / 6940 1D Exp Move: ±0.87% 30D IV: 13.85% (still contained) Net GEX: +36.6M Put/Call

$SPX / $ES_F GEX Update:

Positive gamma regime with spot sitting ~0.15% from HVL → still pinned environment unless 6900 breaks.

Call Resistance: 7000 (0DTE) / 7100
Put Support: 6900 (0DTE) / 6940
1D Exp Move: ±0.87%
30D IV: 13.85% (still contained)

Net GEX: +36.6M
Put/Call
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F Spot 6880 sitting 0.15% from HVL (6900) in a positive gamma regime → expect dealer hedging to damp volatility unless we break key levels. Key levels: 🔹 Put support: 6900 (0DTE) / 6940 🔹 Call resistance: 7000 (0DTE) / 7100 Exp move: ±0.87% IV30: 13.85% Above

$SPX / $ES_F

Spot 6880 sitting 0.15% from HVL (6900) in a positive gamma regime → expect dealer hedging to damp volatility unless we break key levels.

Key levels:
🔹 Put support: 6900 (0DTE) / 6940
🔹 Call resistance: 7000 (0DTE) / 7100

Exp move: 
±0.87%

IV30:
13.85%

Above
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$ES_F / $SPX GEX map into Quad Witching (3/20): 0DTE (Mon 3/16): – Neg gamma below 6630 – 6600 = key support, 6705 = resistance → Expect 2-sided trade → LVNs + orderflow confirmation = your edge → Fade edges unless acceptance 3/20 (Quad Witching): – Heavy neg GEX stack –

$ES_F / $SPX

GEX map into Quad Witching (3/20):

0DTE (Mon 3/16):
– Neg gamma below 6630
– 6600 = key support, 6705 = resistance
→ Expect 2-sided trade
→ LVNs + orderflow confirmation = your edge
→ Fade edges unless acceptance

3/20 (Quad Witching):
– Heavy neg GEX stack
–
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$ES_F Back inside last week’s value after that large premarket move — auction reset, not a breakout. Gamma still positive → expect dealer pinning unless we break levels. • Spot ~6580 (near HVL 6550, only ~0.15% away) • 0DTE range: 6900–7000 • 1D exp move: ±0.87% →

$ES_F

Back inside last week’s value after that large premarket move — auction reset, not a breakout.

Gamma still positive → expect dealer pinning unless we break levels.

• Spot ~6580 (near HVL 6550, only ~0.15% away)

• 0DTE range: 6900–7000

• 1D exp move: ±0.87% →
LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

No trades for me today. Price below prev day RTH VAL, prior low, and even 5D value low looks like breakdown… but from my experience this is not a signal of clean trend. You’re in price discovery: – No agreed value – Thin liquidity – Buyers (mean reversion) vs sellers

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

It’s no wonder some of the greatest traders have competitive/athletic backgrounds or state they train like professional athletes. • Jim Simons • Paul Tudor Jones • Steve Cohen • Mark Minervini Just to name a few

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

People think options increase risk, when they’re the only instrument that lets you define it precisely—down to the cent, or eliminate it entirely. Options aren’t about symmetric outcomes. They’re about selectively owning the right tail. With multi-leg structures, you’re shaping

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

If you come from spot markets (futures) and use volume profile, you’re already thinking in distributions. Options require the same framework—just formalized. The mean becomes theoretical price (time, rates, inputs), and standard deviation becomes volatility—the spread of

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

People see “👀 Someone bought $1.5m puts” and instantly think bearish. That’s not how this works. Big orders by themselves don’t tell you the story. That flow could be: • A hedge • Part of a larger position • Just one leg of something way bigger Context is everything.

LUKE DOM WALKER (@lukedomwalker) 's Twitter Profile Photo

$SPX / $ES_F GEX going into 4/28: Call resistance: 7100 (7000 0DTE) Put support: 6940 (6900 0DTE) Spot ~7165 → sitting right near HVL (0.15%) Total GEX: +2.7B Net GEX: +36M (basically neutral) P/C GEX ~1 → balanced IV 30D: 13.8% → still suppressed In other words: We’re

$SPX / $ES_F GEX going into 4/28:

Call resistance: 7100 (7000 0DTE)

Put support: 6940 (6900 0DTE)

Spot ~7165 → sitting right near HVL (0.15%)

Total GEX: +2.7B

Net GEX: +36M (basically neutral)

P/C GEX ~1 → balanced

IV 30D: 13.8% → still suppressed

In other words:
We’re