A massive, privately negotiated securities transaction executed outside the public auction markets.
Definition
A block trade is a significantly large securities transaction, typically involving at least 10,000 shares or a value of $200,000 or more.To prevent these massive orders from instantly crashing or spiking the stock price, institutional investors (whales) and corporate insiders execute them outside the open market, often through dark pools or specialized block trading desks.
Why it matters for Whale Tracking
Monitoring block trades is essential for whale tracking because it reveals the true entry and exit points of institutional capital.When a massive block trade prints on the tape, it creates a new psychological support or resistance level for the asset.
Technical Nuance
Retail investors often miss block trades because they do not appear on standard Level 2 order books until after the transaction is completed and reported to the consolidated tape. Analyzing block trade volume alongside insider Form 4 filings provides a complete picture of smart money positioning.
Track Block Trades Live
Stop reading history. See what corporate insiders are buying right now in our real-time terminal.
Real-World Example
"A block trade of 500,000 shares at $150 is executed in a dark pool. Two days later, a Form 4 shows the CEO bought shares at the same price. This confirms that the dark pool 'whale' and the CEO share the same bullish outlook."
Fundamental Quant Thesis
Go beyond the raw data. Read institutional-grade analysis on why dark-pools insiders are moving capital and the long-term structural impact.