
Dive into Wall Street's darkest scandal - how hedge fund titan Steven Cohen built an empire on "black edge" insider trading yet escaped prosecution. Called "a modern Moby-Dick with wiretaps" by The New York Times, this bestseller reveals why financial corruption remains virtually untouchable.
Sheelah Kolhatkar, bestselling author of Black Edge: Inside Information, Dirty Money, and the Quest to Bring Down the Most Wanted Man on Wall Street, is a staff writer at The New Yorker and a leading voice in financial investigative journalism. A former hedge fund analyst, Kolhatkar combines Wall Street expertise with sharp narrative storytelling to expose high-stakes corporate malfeasance in her nonfiction work, which blends true crime, finance, and legal drama.
Her decade of experience analyzing markets at firms like Isthmus Partners informs her unflinching exploration of greed, power, and regulatory failures in Black Edge, a New York Times bestseller and Financial Times Business Book of the Year nominee.
Kolhatkar’s reporting regularly appears in The Atlantic, Bloomberg Businessweek, and on NPR’s Marketplace, where she dissects Silicon Valley, national politics, and economic trends. A frequent speaker at institutions like the United Nations and The New Yorker Festival, she holds an MA from Stanford University and contributes commentary to CNBC, PBS, and CBS. Her groundbreaking investigation into the SAC Capital insider trading case—the basis for Black Edge—has become essential reading in business ethics courses nationwide, cementing her reputation as a preeminent chronicler of modern finance.
Black Edge investigates the rise and fall of Steven Cohen’s SAC Capital, exposing widespread insider trading and Wall Street’s culture of unchecked greed. The book reveals how Cohen’s hedge fund used illegal "Black Edge" information—material nonpublic data from corporate insiders—to reap billions, and the government’s struggle to hold him accountable.
This book is ideal for finance professionals, true crime enthusiasts, and readers interested in corporate ethics. It offers a gripping narrative of white-collar crime, making it accessible to those unfamiliar with Wall Street jargon while providing nuanced insights for industry insiders.
Yes. Sheelah Kolhatkar’s investigative rigor and narrative flair make Black Edge a standout exposé of financial corruption. It was a New York Times bestseller, a finalist for the Financial Times/McKinsey Business Book of the Year, and praised for its page-turning analysis of SAC Capital’s illicit practices.
Cohen sidestepped personal charges by maintaining plausible deniability, relying on verbal communication, and insulating himself from direct evidence. Prosecutors instead charged his firm, resulting in a $1.8 billion fine and SAC’s closure, while Cohen faced civil penalties.
Martoma, a SAC portfolio manager, orchestrated an insider trading scheme involving Alzheimer’s drug trials. His conviction highlighted the firm’s culture of pushing legal boundaries, though Cohen remained unscathed despite profiting from the trades.
The book critiques Wall Street’s shift toward high-risk, unethical strategies to outperform markets. It underscores systemic issues like lax regulation, the commodification of insider information, and the moral compromises normalized in finance.
The book was a New York Times bestseller, a finalist for the Financial Times/McKinsey Business Book of the Year, and shortlisted for the Andrew Carnegie Medal for Excellence in Nonfiction.
Kolhatkar’s experience as a hedge fund analyst and investigative journalist at The New Yorker enables sharp analysis of Wall Street’s opacity. Her dual expertise lends credibility to the book’s critique of financial industry practices.
The case spurred tighter insider trading enforcement and scrutiny of hedge funds. However, critics argue systemic change remains elusive, as top executives like Cohen continue operating through new ventures like Point72 Asset Management.
Cohen is portrayed as a micromanager who fostered a cutthroat, profit-driven culture. He incentivized analysts to procure edge-generating intel while avoiding written records, creating a "plausible deniability" shield against legal fallout.
"Black Edge" symbolizes the illegal insider information that fueled SAC’s success. The term reflects Wall Street’s ethical spectrum, where firms often blur lines between legitimate research and unlawful practices to gain competitive advantages.
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Cohen simply replied, "Would the Yankees ask Mickey Mantle to bat eighth?"
Cohen dreamed of the financial freedom his maternal grandparents enjoyed from their investments.
Cohen's uncanny ability to be "always on the right side" of trades had long raised suspicions.
No desire was too extravagant and no obstacle insurmountable.
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Погрузитесь в Black Edge через яркие истории, превращающие уроки инноваций в запоминающиеся и применимые моменты.
Задавайте любые вопросы, выбирайте свой стиль обучения и создавайте идеи, которые действительно вам подходят.

Создано выпускниками Колумбийского университета в Сан-Франциско
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In the summer of 2008, FBI Special Agent B.J. Kang sat in a nondescript surveillance van, listening to a wiretapped call that would eventually unravel one of Wall Street's most notorious insider trading networks. The conversation revealed advance knowledge of Akamai Technologies' disappointing earnings-information that would net billionaire Raj Rajaratnam over $5 million in illicit profits. But this was just the beginning. As investigators pulled on this thread, they discovered a much bigger target: SAC Capital Advisors and its enigmatic founder Steven Cohen, whose uncanny ability to be "always on the right side" of trades had long raised suspicions on Wall Street. Cohen's hedge fund operated with a ruthless efficiency that generated billions in profits but left a trail of ethical questions in its wake-questions that would eventually lead to the largest insider trading investigation in American history.
Steven Cohen grew up in Great Neck, Long Island, one of eight children in a financially struggling family amid affluent surroundings - a contrast that fueled his wealth ambition. While peers played sports, Cohen studied stock tables, developing market intuition. At Wharton, Cohen dominated poker games and rose early to read The Wall Street Journal. In 1978, he joined Gruntal & Co., impressing everyone by making $8,000 on his first day's stock prediction. Cohen's trading desk became known for his volatile temperament - erupting in profanity-laced outbursts before returning to friendliness minutes later. When questioned about taking another trader's stock, he simply stated, "Would the Yankees ask Mickey Mantle to bat eighth?" His performance made him untouchable. By the mid-1980s, Cohen secured an unprecedented arrangement: his own trading group with 60% of profits and complete autonomy. During the 1987 market crash, while others panicked, he calmly took control, announcing, "From now on, no one is trading but me."
In 1992, Cohen launched SAC Capital with $23 million. Within three years, the fund quadrupled to almost $100 million, generating trading volume brokers couldn't ignore. His strategy relied on quick decisions and rapid execution, typically holding positions for just hours or days. Recognizing his social limitations, Cohen hired Kenny Lissak, a charismatic stock salesman who built crucial broker relationships and secured privileged access to institutional research-a key component of SAC's information advantage. By 1998, SAC had become Goldman Sachs' largest commission generator in their equity division, helping hedge funds replace mutual funds as Wall Street's most valued clients. SAC's massive trading volume gave them leverage for preferential treatment, including early access to analyst reports and first calls on trading opportunities. Cohen's ruthlessness emerged when competing for a Greenwich mansion. After his competitor offered $1 million to walk away, Cohen overwhelmed them with a $14.8 million cash offer. He transformed the property into a 36,000-square-foot compound with basketball court, glass-domed pool, and ice-skating rink-embodying his belief that no obstacle was insurmountable.
By 2008, SAC had built enormous positions in pharmaceutical companies Elan and Wyeth based on portfolio manager Mathew Martoma's confidence in their experimental Alzheimer's drug. Cohen didn't know this confidence came from illegal inside information from Dr. Sid Gilman, who supervised the drug trials. When Martoma learned the final trial results would disappoint investors, he immediately arranged a Sunday morning call with Cohen. After their twenty-minute conversation, Cohen ordered the liquidation of their $700 million position in both companies. Over nine days, Cohen's traders sold 10.5 million Elan shares and their entire Wyeth position through anonymous "dark pools," then reversed course by shorting 4.5 million Elan shares. "Obviously no one knows except me you and Steve," his trader told Martoma. As the selling began, former SEC chairman Harvey Pitt arrived at SAC to deliver insider trading training - Cohen's absence was notably strange. When the disappointing results were announced, Elan's stock plunged from $33 to below $10. The trade saved SAC hundreds of millions while devastating other investors. "Stuff that legends are made of," one SAC employee later messaged, unaware of the illegal information behind it.
The FBI's investigation followed a methodical approach: flip cooperators, gather evidence against other traders, obtain wiretaps, and repeat. When caught making payments for inside information, C.B. Lee faced a simple choice - cooperate or be prosecuted. Lee described SAC as a bicycle wheel with Cohen at the hub and portfolio managers as competing spokes. Teams communicated only with Cohen, who became furious if traders acted before informing him. Lee revealed that obtaining inside information was implicitly expected, with the fund structured to insulate Cohen from knowing information sources. Ideas passed through layers with conviction codes before reaching him. Dr. Gilman began cooperating, disclosing his meetings with Martoma about the drug trial. Despite the investigation, Cohen maintained his lavish lifestyle, spending $20 million on the Mets and pursuing the Dodgers. When questioned about suspicious Elan trades, Cohen claimed Martoma had simply become "uncomfortable" with the position, concealing their crucial Sunday conversation. FBI agent B.J. Kang made his ultimate target clear: "You are only a grain of sand. The person we're really after is Steven Cohen."
Investigators discovered "Mathew Martoma" was born Ajai Thomas and had been expelled from Harvard Law School for forging his transcript. Under paternal pressure, he had altered grades for a clerkship, fabricated lies, and ultimately changed his name, reinventing himself in finance. Despite SAC Capital's indictment as a criminal enterprise, Wall Street banks continued working with Cohen. By November 2013, prosecutors reached a settlement: SAC would plead guilty and pay $1.8 billion in penalties. At Martoma's sentencing, Judge Gardephe stated: "It is much more likely than not that Cohen did, in fact, receive material, non-public information from Martoma." Though never charged, Cohen was directly implicated. Martoma received nine years in prison. Eight months later, Cohen attended a high-profile Christie's auction, demonstrating his continued financial power. He methodically rebuilt his reputation - changing SAC Capital to Point72 Asset Management and hiring a former U.S. Attorney as general counsel.
The pursuit of "black edge"-illegal information giving traders unfair advantage-continues today with more sophisticated methods. Despite the largest insider trading investigation in history, the central figure emerged largely unscathed. By 2016, the SEC quietly settled with Cohen, imposing only a two-year ban on managing outside money. Many prosecutors who built the case later moved to lucrative private sector jobs-including one who joined Cohen's defense counsel's firm, exemplifying the revolving door between enforcement and finance. This outcome reveals how Wall Street's most powerful players remain beyond reach. The financial industry has grown so complex that significant portions evade regulatory oversight. Despite post-2008 promises from the Justice Department, little changed. As one SAC trader observed: "No one ever got the better end of a deal with Stevie Cohen." Not even the United States government. In a system where small fish are caught while sharks swim free, we're left questioning whether true accountability for the financial elite is possible-or whether the pursuit of wealth at any cost will always outmaneuver the law.