# How Private Credit's Master of Disaster Built an 800 Million Dollar Fortune > Leonard Tannenbaum has extracted more than 670 million dollars in fees, dividends, and stock sales since 2008, building an estimated 800 million dollar fortune even as the public funds he ran trailed the market or lost value for their shareholders. - Source: Standard - Canonical URL: https://standard.de.com/article/leonard-tannenbaum-private-credit-master-of-disaster-800-million-fortune - Author: Standard Staff - Section: Wealth - Published: 2026-07-30T13:35:27.073Z - Updated: 2026-07-30T13:35:27.073Z - Tags: Leonard Tannenbaum, private credit, Advanced Flower Capital, Fifth Street Finance, BDC, finance --- Leonard Tannenbaum has spent nearly two decades proving a hard truth about modern finance, which is that a money manager can grow enormously rich even when the people who hand him their money do not. Forbes now estimates the fortune of the 54 year old lender, nicknamed private credit's master of disaster, at more than 800 million dollars, most of it collected in fees, dividends, and stock sales while the public funds he ran repeatedly lagged the market or lost value outright. The number that best captures the pattern is 670 million dollars, the rough total Tannenbaum has pulled out of his ventures since 2008 through management fees, dividends, and proceeds from taking his firms public. His investors, over the same stretch, have a very different story to tell, and the gap between the two is the whole point of his career. ## A career built on other people's capital Tannenbaum grew up in Great Neck on Long Island and collected a bachelor's degree and an MBA from Wharton before passing through Merrill Lynch and other Wall Street firms. His real break came from family. In 1998 he launched his first hedge fund with 100 million dollars backed by his then father in law, the Toll Brothers cofounder Bruce Toll, who later described him simply as a good talker and a good convincer of ideas. That early support led, through a series of funds, to Fifth Street Finance, a business development company he took public in 2008 in an offering that raised 141 million dollars. Business development companies, or BDCs, lend to midsize firms and are required to pay out most of their income as dividends, while the outside managers who run them earn recurring fees, typically around 2 percent of assets and 20 percent of profits. The structure rewards growing the pile of assets under management, almost regardless of how the underlying loans perform. ## The Fifth Street machine Fifth Street grew fast. It swelled to a peak market value near 1.4 billion dollars in 2013, and over roughly six years Tannenbaum's management arm collected about 489 million dollars in fees. Shareholders were not so lucky. Across the same window the fund delivered a total return of around 8 percent while the S and P 500 returned about 130 percent, and its market value eventually slid from 1.3 billion dollars toward 770 million dollars. Tannenbaum kept finding ways to cash in regardless. When he floated Fifth Street Asset Management in 2014 he sold 88 million dollars of his own stock, and in 2017 he sold the advisory rights to Oaktree Capital for 320 million dollars. Fifth Street Asset Management was later dissolved, its stock having fallen sharply from its offering price, and the saga produced a 23 million dollar settlement of investor lawsuits. In 2018 securities regulators censured Fifth Street Management and ordered a 4 million dollar disgorgement over misallocated expenses and lax oversight of its valuation models. ## From Wall Street to weed In 2021 Tannenbaum reinvented himself as a cannabis lender, cofounding AFC Gamma, later renamed Advanced Flower Capital, with his wife Robyn. What amazed me was there was no institutional lender in the space, he said of the opportunity, adding at one industry event that he was a cannabis smoker, unlike most people who lend to this industry. The firm went public in March 2021 and raised 124 million dollars, reaching a market value near 390 million dollars by that November. The familiar arc followed. Advanced Flower Capital is now worth about 120 million dollars, its shares having fallen from around 19 dollars to under 3 dollars, yet the manager still collected roughly 53 million dollars in fees between 2021 and early 2026, and Tannenbaum personally took in more than 30 million dollars in dividends. His family owns about 92 percent of the management company. Big loans to borrowers such as Devi Holdings, at 62.5 million dollars and now in receivership, and Justice Grown, at around 80 million dollars and in default, have soured, and the latter has spawned a tangle of litigation that remained unresolved into 2026. None of it has slowed him down. In 2024 he carved the firm's non cannabis holdings into a separate vehicle, Sunrise Realty Trust, and this year he restructured Advanced Flower Capital yet again. He is now raising a new 50 million dollar fund aimed at distressed loans to enterprise software companies, pitching what he calls a coming SaaSpocalypse. The through line of his career is not the industry, which keeps changing, but the model, a fee generating engine that has made Leonard Tannenbaum a fortune whether or not his backers ever see one. --- Originally published by Standard. Free to cite with attribution and a link to https://standard.de.com/article/leonard-tannenbaum-private-credit-master-of-disaster-800-million-fortune.