CoStar Group, Inc.
Thesis
CSGP started as the Bloomberg of commercial real estate and has positioned itself as the leader in digital real estate services. With a strong revenue mix and significant growth opportunities in both its core data/analytics offering and multifamily segment, CSGP is expected to see double-digit earnings and free cash flow growth in the coming years.
Did it work?
The long thesis anticipated double-digit earnings and free cash flow growth driven by CSGP's leadership in digital real estate services, but the stock has collapsed 63.2% over 28 months — a catastrophic decline for a long position that decisively contradicts the growth premise. A drawdown of this magnitude over roughly two-plus years reflects a fundamental breakdown in the thesis dynamics (such as growth deceleration or heavy cash burn in expansion efforts), not ordinary noise against a 'coming years' horizon. The market has emphatically rejected the bull case as stated.