What this is
A hedge fund is a privately offered investment vehicle that pools capital from accredited investors and institutions and can pursue a much wider range of strategies than a traditional mutual fund. The classic mental model is long/short equity: buy securities you expect to rise and short securities you expect to fall, so the fund is not simply a leveraged bet on the market going up.
Why it matters
Hedge funds sit at the center of modern markets: they are among the most active short sellers, they run activist campaigns that reshape company boards, and their letters and transcripts are some of the richest public records in this library. You cannot read the records of David Einhorn, Bill Ackman, or George Soros without understanding the vehicle they operate.
How it works
Structure: a management company runs the fund; investors commit capital under a partnership agreement. Because the fund is privately offered, it faces fewer disclosure rules than a mutual fund — but also cannot market to the general public.
Fees: the industry standard became “2 and 20” — a 2% annual management fee on assets plus 20% of profits above a benchmark. The math is why fund size matters: a $10B fund earns $200M a year in management fees alone, even with mediocre performance.
Strategies: equity long/short (the core model), activist investing (buying stakes and pushing for change), global macro (betting on currencies, rates and economies — the Soros and Druckenmiller lineage), and quantitative/statistical arbitrage (the Renaissance model).
Constraints: lock-ups on investor capital, borrowing for leverage, and concentration limits set by the fund's own documents rather than by regulation.
Example
The most documented hedge-fund trade in this library's era is the 2007–2008 subprime short: funds including Michael Burry's Scion Capital bought credit default swaps on mortgage bonds — a short position on housing credit — paying an ongoing premium like an insurance cost until the bonds collapsed. The indexed record of that trade, in Burry's own letters, is in this library.
Common misunderstandings
“Hedge funds are hedged.” Rarely entirely. Many run net-long exposure; some blow up precisely because they were levered in one direction.
“They beat the market.” After fees, the industry aggregate has trailed a simple index over long periods — a case John Bogle spent a career documenting in his indexed speeches and letters.
“It's only for rich people.” Mostly true: minimums and accredited-investor rules keep it institutional and high-net-worth — which is exactly why the letters and interviews in this library matter. They are the public window into a private world.
Key concepts
Long/short · short selling · leverage · management and performance fees · accredited investors · lock-ups · net exposure · activism · global macro.