Get historical data for a specific Bitcoin ETF by ticker symbol. Returns daily BTC holdings, market price, NAV, premium/discount, and shares outstanding over time. Ideal for: tracking ETF flows, analyzing premium/discount trends, monitoring institutional accumulation.

Get current holdings for all Grayscale cryptocurrency funds (GBTC, ETHE, etc.). Returns holdings quantity, USD value, 24h changes, market price, NAV, and premium/discount. Ideal for: institutional flow tracking, Grayscale analysis, premium arbitrage, market sentiment.

Get a comprehensive list of all Ethereum ETFs including spot and futures funds. Returns current prices, AUM, holdings, volume, premium/discount, and 24h/7d performance. Ideal for: ETF comparison, institutional ETH flow tracking, Ethereum exposure analysis.

Get a comprehensive list of all Bitcoin ETFs including spot and futures funds. Returns current prices, AUM, holdings, volume, premium/discount, and 24h/7d performance. Ideal for: ETF comparison, institutional flow tracking, Bitcoin exposure analysis, portfolio allocation.

Get historical total AUM (Assets Under Management) for all Bitcoin ETFs combined. Returns daily AUM values in USD showing aggregate institutional Bitcoin exposure over time. Ideal for: tracking institutional adoption, analyzing ETF growth trends, market sentiment analysis.

Get comprehensive details for a specific Bitcoin ETF by ticker symbol. Returns fund info, current session data, last quote/trade, and 52-week performance metrics. Ideal for: ETF due diligence, real-time price monitoring, performance comparison, trading decisions.

Retrieves Coinbase Premium Index showing price difference between Bitcoin on Coinbase Pro and Binance. Positive premium indicates US institutional buying pressure, negative indicates selling. Ideal for: US market sentiment, institutional flow tracking, regional arbitrage opportunities.