Why does IPO issuance boom and bust with the cycle while secondary-market trading barely flinches, and what did electronic trading change?
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Primary versus secondary markets
Define each market, trace primary activity from venture capital financing to the initial public offering, and record the used-securities analogy for the secondary market.
Cyclical IPO activity and how venture capitalists get paid
Record that IPO activity swings with the business and credit cycles, and that venture capitalists cash out when a company goes public, tying venture capital and technology to those cycles.
Secondary-market trading volume through and after 2008
Sketch volume rising through 2008, falling about a third from 2009 to 2013, then setting records in the 2020s, and contrast its low sensitivity to the cycle with issuance.
Online trading, ECNs and off-exchange venues
Record what ECNs began as, how they narrowed the bid-offer spread, the off-exchange share passing half of volume in 2025, and who gained and lost from electronic trading.