Drexel Burnham Built the Junk Bond Market and Then Died With It
The firm that made high yield debt into an asset class collapsed in 1990. The instrument survived and became permanent, which is the part that matters.
The Original Insight
Before the 1980s, bonds rated below investment grade were mostly fallen angels, meaning companies that had been downgraded after issuing at higher ratings. Institutions largely could not or would not hold them.
Michael Milken at Drexel Burnham Lambert made an empirical argument. Studies of historical default rates suggested that a diversified portfolio of low rated bonds produced returns, after actual losses, that exceeded returns on investment grade debt. The market was pricing these bonds as if defaults would be worse than the record indicated.
If correct, that meant an underserved market existed, and companies too small or too leveraged to issue investment grade debt could access public capital.
What It Enabled
The consequence went well beyond bond investing. High yield issuance made hostile takeovers possible at a scale previously unavailable.
Previously, acquiring a large public company required either being a larger company or arranging bank financing that few could obtain. Junk bonds let a small group raise enormous sums against the target's own cash flows, which is the leveraged buyout structure.
The instrument did not just finance companies. It transferred power from incumbent managers to anyone who could raise debt, which is why the political reaction was so intense.
Why It Collapsed
Several forces converged around 1989 and 1990. Default rates rose as the economy weakened and as later deals were structured more aggressively than early ones. Regulatory changes forced savings and loan institutions to divest high yield holdings, removing a major buyer and forcing supply into a falling market.
Legal pressure mounted simultaneously. Milken was indicted and ultimately pleaded guilty to securities and reporting violations, and the firm itself pleaded guilty to charges and paid substantial penalties.
With its reputation damaged and its funding compromised, Drexel could not maintain the market making operation that supported liquidity in the bonds it had underwritten. It filed for bankruptcy in 1990.
The Part That Survived
The instrument outlived the firm entirely. High yield is now a large, permanent asset class with index funds, dedicated managers, and standard analytics. Leveraged finance became a core investment banking business.
The original insight was substantially correct. Below investment grade debt does compensate investors for default risk when held in diversified portfolios over full cycles. What was wrong was not the analysis but the assumption that liquidity would persist through a downturn in a market dependent on one firm to make prices.
The Structural Lesson
A market that depends on a single dominant intermediary for liquidity is fragile regardless of how sound the underlying instruments are. When that intermediary is impaired, price discovery disappears exactly when it is most needed.
This pattern recurs. It appeared in various structured products in 2008 and in specific corners of credit markets since. Asking who makes the market, and what happens if they stop, is a question worth asking before buying anything that does not trade on an exchange.
The Bottom Line
Drexel was right about junk bonds and still failed, because it was the market rather than a participant in it. The asset class survived once liquidity was distributed across many dealers instead of one.