According to Michael Saylor (@saylor), few investors understand the significance of $MSTR, which is MicroStrategy's stock symbol and one of the largest publicly traded holders of Bitcoin (source: Michael Saylor Twitter, May 16, 2025). For crypto traders, $MSTR serves as a proxy for Bitcoin price movements because MicroStrategy's balance sheet is heavily exposed to Bitcoin. Tracking $MSTR trading volumes and price action can provide early signals for institutional sentiment on Bitcoin, making it an important instrument for crypto market strategies (source: public SEC filings, MicroStrategy investor reports).