Signature Bank

Signature Bank opened on May 1, 2001. It was founded by Joseph J. DePaolo, the bank's president and chief executive officer; Scott A. Shay, chairman of the board; and John Tamberlane, vice chairman and director. DePaolo and Tamberlane had left Republic National Bank of New York after it was purchased by HSBC the year prior. Six branches were opened simultaneously across the New York City area, with the goal to cater to wealthy clients and middle-market business managers with $250,000 in assets: DePaolo described the target audience as "the guy who started his business in Brooklyn and is now worth $20 million". The bank was a subsidiary of Bank Hapoalim of Israel, which provided over US$60 million in initial capital. Among its first employees were 65 former Republic Bank employees, who left en masse on April 27, days before Signature opened its branches. The bank quickly grew to $950 million in assets by February 2003, ranking in the top five percent of US commercial banks just 20 months after being founded and beginning to turn a profit. It also made relatively few loans: adopting a strategy once used by Republic Bank, it put its assets in instruments with lower yields. This led to a net interest margin of 2.8 percent, lower than many comparable banks.

The bank completed its initial public offering in March 2004 and began trading on the NASDAQ under the symbol SBNY. While remaining solely focused on the New York metropolitan area, Signature continued to rapidly grow, becoming one of the fastest-growing public companies in New York and one of the fastest-growing public banks for loan growth. It made a practice of hiring bankers—and luring their clients—from recently merged banks; it emphasized personal relationships so thoroughly that it did not advertise and its bank branches did not have street signs. CEO DePaolo refused to decorate his office with art, finding it a sign of complacency, and usually ate a deli lunch at his desk. After the 2008 financial crisis, Signature's style of relationship banking led to years of double-digit increases in loans and deposits. From 2004 to 2014, its stock price rose 650 percent, a return 10 times the S&P 500 and double Silicon Valley Bank's parent, SVB Financial Group, the next highest-performing institution; a 2014 article in Crain's New York Business hailed Signature as "New York's most successful bank".

Beginning in 2007, it expanded into other areas of business, starting with the launch of a multifamily lending unit. The bank expanded into equipment finance in 2012 through its Signature Financial unit. Additionally, Signature cultivated a major business in servicing the New York area's law firms. An increase in loan activity offset its traditional reliance on mortgage-backed securities; its large capital cushion helped it to protect the many depositors whose accounts were larger than the Federal Deposit Insurance Corporation (FDIC)-insured $250,000. Signature Financial's taxi medallion lending business was hurt by the rise of car sharing platforms such as Uber. Signature continued to post profits despite losses associated with medallion loans. The bank's assets approached $50 billion by 2017.

In 2018, the bank expanded its footprint and commenced operations on the West Coast with the opening of its first private client banking office in San Francisco. The move came the year after DePaolo, once reluctant to expand beyond New York, opened the door to adding additional markets in comments made at an investors' conference. In 2020, the bank continued its expansion throughout southern California, opening new offices in Newport Beach, Woodland Hills, and Ontario. 2022 brought the opening of an office in Reno, Nevada, and a West Coast operations center in City of Industry, California.

In addition to the West Coast, Signature Bank also began a private client operation in North Carolina by luring a group of high-profile bankers from the former Square 1 Bank, a part of PacWest Bancorp, in 2019. By 2021, it was the fourth-largest bank by deposits in the Durham–Chapel Hill metropolitan area.

The bank's focus on commercial clients meant that it always had a high percentage of uninsured deposits—those beyond $250,000. However, in its final years, the bank's share of uninsured deposits increased significantly from 63 percent in 2018 to 82 percent in 2021 and 89.3 percent at its closure.

General services

Signature Bank offered business and personal banking products and services with a focus on lending and deposits. The bank utilized a team model, paying its bankers on an "eat-what-you-kill" basis reminiscent of brokerage firms. In 2015, nearly 150 senior bankers reported directly to DePaolo; some made more than the CEO. It cultivated a reputation of being loyal to its clients, which in turn incentivized them to conduct further banking business with Signature. Irv Gotti became a loyal Signature customer after it allowed him to use its services while on trial for federal money laundering charges in 2005; even though he had not been found guilty, other banks refused to let him maintain accounts. Among the company's nine national businesses in 2022 were commercial real estate lending, fund banking for private equity investors, venture banking for the technology industry, specialized mortgage banking, and corporate mortgage finance. The fund banking business in particular had been a source of rapid growth; four years after being created, the fund banking portfolio had become Signature's largest asset, representing 41 percent of the bank's loan portfolio at the end of 2021.

In addition to banking products, two Signature subsidiaries provided additional services: Signature Securities Group Corporation, an investment advisory firm, and Signature Financial LLC, an equipment financing and leasing division.

On February 20, 2023, DePaolo, the bank's only CEO in its nearly 22-year history, announced his departure effective March 1—unrelated to the crash of the cryptocurrency bubble—to become a senior adviser; chief operating officer Eric Howell was to replace DePaolo as CEO at a later date. A later analysis by the Wall Street Journal found that DePaolo, Howell, and Shay had sold significant amounts of their Signature stock during the stock's cryptocurrency-fueled price surge in 2021, which eluded attention because the bank filed its insider trading reports with the FDIC, not the SEC, unusual for institutions of Signature's size. Only one other S&P 500 member, First Republic Bank, did not file insider trading reports at the SEC. Additionally, some of the reports it did file were mischaracterized.

Cryptocurrency

Cryptocurrency became a focus of the bank's activities in its final years after deciding to accept customers from the industry in 2018, and the ability of cryptocurrency companies to utilize the services of banks like Signature gave the sector legitimacy and credibility. In 2021, more than 16 percent of its deposits came from the sector, a figure that had risen to 30 percent by February 2023. It also held reserves from the Circle-managed USDC. While cryptocurrency enthusiasts boosted the bank's stock from $75 to $375 a share in little over a year, this strategy proved risky and gave the bank an image of being a "crypto bank", a label founder DePaolo tried to shed in an interview with the Financial Times in July 2022. After consistently growing deposits, it began to experience outflows of deposits from the bank evenly split between crypto clients—as part of a strategy to actively reduce its deposits from digital asset lending—and its New York private banking customers, some of whom sought higher yields from accounts at other institutions as interest rates rose. Some investors privately raised concern about liquidity: per the Financial Times, "as Signature banks eight of the 12 largest crypto brokers, for instance, an implosion of the industry in a credit crunch could see their deposits rapidly evaporate". The bank, in response, reduced its involvement in the sector and pushed out some $1.5 billion in cryptocurrency-related deposits. After the bank collapsed, a report from Bloomberg News indicated that the United States Department of Justice and United States Securities and Exchange Commission (SEC) were investigating Signature to see if it sufficiently scrutinized cryptocurrency-related transactions for potential money laundering. The Financial Times noted that Marc Cohodes, a short seller of Signature, had written the Department of Justice in January 2023 warning that the bank had served as "a facilitator, even if unwitting, for countless illegal crypto transactions" due to its lax procedures.