[3] In 1967, she founded her own eponymous firm, Muriel Siebert & Co., Inc., beginning by doing research for institutions, and buying and selling financial analyses.

It insisted that Siebert obtain a letter from a bank offering loans of $300,000 at the near-record $445,000 seat price.

When she learned Hugh Carey, New York Governor at the time, had appointed her to the position, Siebert recalled thinking, "Mickie, you know you're a college dropout.

"[9] Shortly after returning to her firm, she ran in the Republican primary for the Senate seat of Daniel Patrick Moynihan.

Siebert remained President of her eponymous firm and continued to be a sought after commentator on phenomena in financial markets.

[12] She was quoted as saying, "American business will find that women executives can be a strong competitive weapon against Japan and Germany and other countries that still limit their executive talent pool to the male 50 percent of their population," as well as "men at the top of industry and government should be more willing to risk sharing leadership with women and minority members who are not merely clones of their white male buddies.

"[13] In 1990, she created the Siebert Entrepreneurial Philanthropic Plan, through which she shared half of her firm's profits from new securities underwriting with charities of the issuers' choices.

During her term, NYWA developed a program advocating "Financial Literacy for Women", which continued until her death.

Likewise, on December 28, 2007, exactly 40 years after her election to the membership of the New York Stock Exchange, she rang the closing bell in celebration.