Symbol Seasonality Matrix (w/ BTC Base)

Symbol Seasonality Matrix (w/ BTC Base)
Compare monthly performance between Bitcoin and any symbol across time

🧠 Overview
This indicator provides a side-by-side monthly return table of Bitcoin (BTCUSD from Bitfinex) and any selected symbol (e.g., ETH, stocks, etc.). It visualizes seasonality patterns, historical performance shifts, and relative trends in a clean matrix layout with dynamic line overlays.

⚙️ Mechanism
BTC Benchmarking:
BTC monthly returns are always shown as a benchmark against the selected chart symbol.

Monthly ROI Calculation:
For each month, the indicator tracks the open and close price and calculates the monthly return using:
(close_end - close_start) / close_start × 100%
It stores both price and return for BTC and the chart symbol.

Table Structure:
Each year is split into two halves:
2023 (Jan ~ Jun) and 2023 (Jul ~ Dec) for clarity.

Color Coding:

Green for positive months

Red for negative months

Monthly trend lines and labels drawn in consistent colors

Background shading per month helps track seasonality

Plot Modes:

regular: raw price

percent: relative % change from the start of selected period

normalized: base=1 scaling to compare trends

Time Range Selector:
You can define start time and end time for comparison — all logic, including table, plots, and highlights, will focus only on this window.

🧭 How to Use
Set the time range:
Choose a meaningful window such as the past 3 years or 2018–2021 to study behavior.

Compare Symbol vs BTC:

Load BTCUSD in a separate chart for baseline.

Switch to ETHUSD, SPY, or any altcoin/equity to view overlayed performance.

Analyze Seasonality:

Look for months with repeated strong/weak performance (e.g., BTC strong in October).

Compare how your asset aligns with BTC trends or diverges.

Choose View Mode:

Use percent to adjust Y-axis scaling and directly compare relative movements.

Use normalized to detect trend correlation without caring about price level.

🔍 Why It’s Useful
Spot seasonal alpha and align entries with favorable months

See if a symbol outperforms or underperforms BTC consistently

Get price-to-return context visually, not just via numbers

Quickly compare assets in real scale or normalized scale

📌 Tip
Try publishing this to a layout with multiple tickers (ETH, SOL, AAPL) to instantly switch comparisons.

Pair with volume-based or macro indicators to layer signals.