Api V2 Signals Advanced Eod-Pressure Get

End-of-day close pin/drift forecast for the last ~75 minutes of the session.

Combines (a) modeled dealer charm exposure near spot, (b) a regime-conditional pin/directional house heuristic, and (c) an OpEx/quad-witching calendar amplifier into a directional close forecast.

Active window: 14:30–16:00 ET only. Outside this window the endpoint returns score = 0 and time_ramp = 0 — treat as an "inactive" state, not neutral.

Logic highlights (src/signals/advanced/eod_pressure.py):

• time_ramp — 0 before T-90min, 1.0 by T-15min, linear in between.
• charm_score = tanh(charm_at_spot / 20M) over strikes within the ATM band.
• Non-negative GEX: pin_component = clip(pin_distance_pct / 0.3%) (target attraction heuristic).
• Negative GEX: pin_component = clip(trailing_signed_return / 0.3%) (amplifies causal recent direction; target distance does not set direction). Missing direction or invalid GEX is neutral. These cutoffs are not calibrated.
• score = (0.6·charm + 0.4·pin) × calendar_amp × time_ramp; calendar_amp is 1.5× OpEx, 2.0× quad-witching.

Params: symbol (default SPY). Returns 404 when no data exists.

Returns:

{
  "score": 48.1,
  "direction": "bullish",
  "clamped_score": 0.48, "weighted_score": 0.096, "weight": 0.20,
  "charm_at_spot": 12850000.0,
  "pin_target": 676.0,
  "pin_distance_pct": 0.00042,
  "gamma_regime": "positive",
  "time_ramp": 0.76,
  "calendar_flags": {"opex": false, "quad_witching": false},
  "context_values": {"...atm_band_pct, pin_source, calendar_amp, ..."},
  "score_history": [{"score": 48.1, "timestamp": "..."}, "...up to 90"]
}

• score — [-100, +100]; positive = bullish close bias, negative = bearish.
• direction — "bullish" | "bearish" | "neutral".
• charm_at_spot — signed dollar-delta of dealer charm in the ±ATM band.
• pin_target — heavy-GEX strike, or max_pain as fallback.
• pin_distance_pct — (pin − spot) / spot; signed; typically ±2%.
• gamma_regime — "positive" | "negative" (flips pin-gravity direction).
• time_ramp — [0, 1]; scaling ramp toward close.
• calendar_flags — booleans for opex and quad_witching.

Trader interpretation:

• time_ramp > 0.5 + score > 50 → strong upside pin; trade drift toward pin_target.
• quad_witching = true doubles the amplifier; treat |score| > 60 as high-conviction.
• Render an "Inactive — EOD window opens at 14:30 ET" state when time_ramp == 0.

Page design. Horizontal close-bias bar (-100..+100). Show pin_target vs spot on a small price axis with distance labeled. Badge for OpEx/quad-witching. Greyed-out card when time_ramp == 0.