Investor Cap RatioTRINITY EXCLUSIVE
EXCLUSIVE — Investor Cap (realized cap minus thermocap) divided by market cap. Measures how much of the current valuation reflects investor speculation above and beyond security spending.
Trinity exclusive model
This metric is a proprietary Trinity Insights model. Its formula, inputs, weights and parameters are NOT disclosed. The page documents only the output (bounded scale, interpretation zones, historical context). Access to the score and its time series is via the REST API and the MCP server, subject to the required tier.
What is it?
Investor Cap Ratio divides Investor Cap by market capitalisation. Investor Cap is defined as Realized Cap (sum of all UTXOs valued at their last movement price) minus Thermocap (cumulative value of all block rewards and fees paid to miners in USD at mining time). By subtracting Thermocap, we isolate the 'investor' component of realized capitalisation — the part reflecting voluntary participant buys/sells beyond network security. The resulting ratio measures what fraction of current market capitalisation is supported by this investor engagement.
How to read
A high ratio (> 0.8) means Investor Cap is close to or above market capitalisation — most of the valuation is supported by investor cost bases. This is typically a sign of overvaluation. A low ratio (< 0.4) means market capitalisation far exceeds Investor Cap — spot price is significantly above investors' aggregate cost basis, creating massive unrealised profits and profit-taking risk.
Key zones
Historically, a ratio < 0.35 coincided with cycle tops (December 2017: ~0.30, April 2021: ~0.33) — investors are massively in profit. A ratio > 0.85 coincided with cycle troughs (December 2018: ~0.90, December 2022: ~0.88) — market cap is close to investor cost basis. The 0.4-0.7 transition zone corresponds to mid-cycle phases where the market is in relative equilibrium.
What to observe
The ratio's descent speed indicates speculative intensity. A rapid drop (from 0.7 to 0.4 in 3 months) marks a parabolic price rise where market cap pulls away quickly from cost bases — a classic bubble configuration. Cross-cycle comparison of the ratio at the same post-halving temporal points reveals whether the current cycle is more or less 'speculative' than previous ones. Spot Bitcoin ETFs potentially modify the dynamic by adding stable institutional capital flow.
Historical context
The Investor Cap concept was formalised by ARK Invest in 2022 as an extension of David Puell's Thermocap Multiple. Subtracting Thermocap is analytically powerful because it eliminates the 'noise' from mining rewards that inflate Realized Cap without reflecting an investment decision. The ratio has shown remarkable consistency across cycles: extremes < 0.35 and > 0.85 marked reversals in 100% of observed cases since 2014, though the sample remains limited (4 cycles).
Expert notes
⚠️ Trinity Exclusive Model — Thermocap calculation requires historical reconstruction of USD value for each block reward at mining time — a computationally heavy calculation covering every block since genesis (>850K blocks). Trinity uses a local on-chain cache for this data. An important subtlety: Thermocap includes transaction fees paid to miners (not just block subsidy), making it more sensitive to network activity after each halving when fees take an increasing share of mining compensation.
Common mistakes to avoid
Interpreting Investor Cap Ratio as a binary 'buy/sell' indicator is an oversimplification. Ratio extremes identify structural conditions, not precise entry/exit points. The ratio can remain in extreme territory for months (the ratio was < 0.40 throughout the final phase of the 2017 bull market, representing ~3 months of additional upside). Moreover, lost coins (~3.7M BTC) remain in Realized Cap and thus Investor Cap calculations, biasing the ratio upward.
Programmatic access
REST API
curl -sS \
'https://api.trinityinsights.io/api/v1/onchain/investor-cap-ratio/history?days=90' \
-H 'X-API-Key: $TRINITY_API_KEY'MCP server
{
"tool": "get_chart_value",
"metric_id": "investor-cap-ratio",
"timeframe": "1y"
}Required tier: performance. See the pricing grid for the tier list and the MCP documentation for multi-client configuration.
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Institutional disclaimer
Trinity Insights is an educational and analytical tool. The metric above does not constitute investment advice. Trinity Insights is not a Crypto-Asset Service Provider (CASP) registered under MiCA Regulation (EU) 2023/1114. See the full disclaimer.