What do you think tho. Make a strong strategy
3/29/2026 01:29pm
Here’s the cleanest “strong” version of this that fits your style: a **rules-based daily playbook** using Tokyo + FX to hunt for mispriced U.S. ADRs of Japanese stocks, with a **mean-reversion core** and a **momentum override**.
---
## 1. Core view 🎯
The most repeatable edge you can realistically exploit is:
> **Each U.S. morning, trade only the biggest gaps between “Tokyo+FX fair value” and the U.S. ADR price, then bet on that gap closing _intraday_ — unless the U.S. tape clearly extends the Tokyo trend, in which case you flip to momentum.**
You’re not trying to arb pennies; you’re swinging for **1–3% intraday on the ADR** with **tight risk and small universe**.
---
## 2. Universe & timeframe 🧩
**Universe (liquid ADRs / U.S. listings):**
- **Banks:** MUFG, SMFG
- **Industrial / tech / consumer:** Hitachi (HTHIY), Sony (SONY), Toyota (TM), Nintendo (NTDOY)
- Optional: Mitsubishi Corp (MTSUY), Itochu (ITOCY) if liquidity is ok for you.
**Timeframe:**
- Primary: **intraday (open → close)**
- Secondary: **1–2 day swing only when U.S. session confirms Tokyo’s move**.
---
## 3. Signal: Tokyo + FX → “fair” ADR move 📐
For each stock every day:
1. **Tokyo return (local yen):**
\( r_{JP} = \dfrac{P_{JP,t} - P_{JP,t-1}}{P_{JP,t-1}} \)
2. **FX return (USD/JPY):**
\( r_{FX} = \dfrac{FX_t - FX_{t-1}}{FX_{t-1}} \)
3. **Previous U.S. close:** \( P^{ADR}_{t-1} \)
4. **Fair ADR price for today:**
\[
P^{fair}_t \approx P^{ADR}_{t-1} \times (1 + r_{JP}) \times (1 + r_{FX})
\]
5. **Pre‑open / open ADR price:** \( P^{mkt}_t \)
6. **Mispricing (your trading signal):**
\[
\Delta_t = \dfrac{P^{mkt}_t - P^{fair}_t}{P^{fair}_t}
\]
Interpretation:
- **Δ < 0** → ADR is **cheap** vs Tokyo+FX.
- **Δ > 0** → ADR is **rich** vs Tokyo+FX.
---
## 4. Strong, simple rules ✅
### 4.1 When to trade (filters)
Trade **only** when all of these are true:
1. **Magnitude:** \(|\Delta_t| ≥ 2.0\%\)
2. **Liquidity:**
- ADR average daily volume ≥ **300k–500k** shares
- Opening spread ≤ **0.5%**
3. **No landmines:**
- Skip if: earnings day, major guidance, or BOJ/Fed/CPI _that morning_ for the banks.
If none of your names hit |Δ| ≥ 2%, **do nothing**. Edge is in saying no.
---
### 4.2 Trade directions
**A. Mean reversion (default mode)**
1. **Cheap ADR – long:**
- Condition: **Δ ≤ −2%** (ADR underreacting)
- Action:
- **Buy the ADR in first 10–20 min** after open, when spreads settle.
- Targets:
- Base target: ADR closes at or within **0.5–1.0%** of \(P^{fair}_t\).
- Hard exit: **by U.S. close**, win or lose.
2. **Rich ADR – short / puts:**
- Condition: **Δ ≥ +2%** (ADR overreacting)
- Action:
- If borrow & spreads are fine: **short ADR** at open.
- If borrow is bad: **same‑week ATM puts** instead of stock.
- Targets:
- Same as above: look for move back toward **\(P^{fair}_t\)** by close.
**B. Momentum override (when not to fade)**
Avoid fading Tokyo when the U.S. is clearly extending it:
- Let **SPY** and **EWJ (Japan ETF)** be context.
- If Tokyo was **strong up**, and:
- SPY + EWJ are **green > +0.5%**, and
- Your ADR **opens above P_fair and keeps grinding higher in first 30–45 min**,
then **skip the short-mean-reversion trade**. Optional: flip to a **small long** in direction of the move.
Same idea for strong down days.
---
## 5. Entries, exits, and sizing 💰
### 5.1 Position sizing
- **Per trade risk:**
- Aim to risk **0.5–1.0% of account** _per name_.
- **Daily cap:**
- Max **2–3% of account** total risk across all these trades.
- Practically: if your stop is **1.5%** on the ADR, size shares so:
\[
\text{Position \$} \approx \dfrac{0.5\%\text{ of account}}{1.5\%}
\]
### 5.2 Concrete stops & targets
- **Stop-loss:**
- If ADR moves further by **+1.5% against you** from entry, you’re out.
- Example: you buy MUFG at $10.00; stop around **$9.85**.
- **Take-profit:**
- First target when the ADR closes **half the gap** to \(P^{fair}_t\).
- Second target (if you scale): when ADR is within **0.5% of P_fair** or you hit **+2–3%** intraday on price.
- **Overnight hold (only for the best setups):**
- Only hold overnight when:
- The ADR moved **in your favor** during U.S. session.
- U.S. close is still **meaningfully mispriced vs up‑to‑date Tokyo+FX**, _and_
- No big scheduled macro / stock catalyst before Tokyo open.
- Otherwise, **flatten by U.S. close**.
---
## 6. Turning it into your daily playbook 📋
**Pre‑Tokyo close (optional, if you’re keen):**
- Note key events: BOJ, earnings, big macro.
**After Tokyo close (≈ 2–3am ET, you can do this later):**
1. Log **P_JP,t, P_JP,t‑1, FX_t, FX_t‑1** for your 6–8 names.
2. Compute **r_JP, r_FX, P_fair** for each.
**U.S. pre‑open (9:20–9:30 ET):**
3. Grab **indicative ADR prices / pre‑market prints**.
4. Compute **Δ_t** for each.
5. Shortlist only names with **|Δ| ≥ 2%** and no events.
**Open → first 30 minutes:**
6. Wait for spreads to tighten.
7. Check SPY & EWJ:
- If they confirm Tokyo’s direction and ADR is still extreme, **take trades**.
- If everything reverses violently at open, **size smaller** or pass.
**Intraday:**
8. Watch for **gap closing toward P_fair**.
9. Take profits in 1–3 legs; hard flat by close except A+ setups.
---
## 7. How this matches your style 🧠
- You like **short‑term, event‑aware momentum**. This gives you:
- A **quantitative signal** (Δ on ADR vs P_fair),
- Tied directly to **real underlying flows** (Tokyo session + FX),
- With **hard rules for entries/exits**, so it’s not just vibes.
- Over time you can:
- Track your **hit rate** and average **R per trade**.
- Tighten thresholds (e.g., only |Δ| > 2.5%) if you want fewer but higher‑quality shots.
---
If you want to push this to the next level, I can:
- Design a **very small “A‑list”** (e.g., just MUFG, SMFG, SONY, TM) with **specific default stops and position sizes**, or
- Add a **simple options overlay** (which strikes and expiries to use when you get |Δ| > 3%+).
Which would you rather have next: a **4‑name “A‑list” playbook with exact sizing rules**, or an **options‑only version** of this strategy for days you want more leverage?