September 1929 was the peak of the stock market.
October 3, 1929 was when the market started to slip, and it continued throughout the week of October 14.

In October 1929, renowned Yale economist Irving Fisher reassured worried investors that their "money was safe" on Wall Street.
A few days later, on October 24, stock values plummeted.
The stock market crash of 1929 ushered in the Great Depression, in which a quarter of working people were unemployed, with soup kitchens, mass foreclosures of farms, and falling prices.
During this era, development of the Financial District stagnated, and Wall Street "paid a heavy price" and "became something of a backwater in American life".

During the New Deal years, as well as the 1940s, there was much less focus on Wall Street and finance.
The government clamped down on the practice of buying equities based only on credit, but these policies began to ease.
From 1946 to 1947, stocks could not be purchased "on margin", meaning that an investor had to pay 100% of a stock's cost without taking on any loans.
However, this margin requirement was reduced four times before 1960, each time stimulating a mini-rally and boosting volume, and when the Federal Reserve reduced the margin requirements from 90% to 70%.
These changes made it somewhat easier for investors to buy stocks on credit.
The growing national economy and prosperity led to a recovery during the 1960s, with some down years during the early 1970s in the aftermath of the Vietnam War.
Trading volumes climbed; in 1967, according to Time Magazine, volume hit 7.5 million shares a day which caused a "traffic jam" of paper with "batteries of clerks" working overtime to "clear transactions and update customer accounts".

In 1973, the financial community posted a collective loss of $245 million, which spurred temporary help from the government.
Reforms were instituted; the SEC eliminated fixed commissions, which forced "brokers to compete freely with one another for investors' business".
In 1975, the Securities & Exchange Commission threw out the NYSE's "Rule 394" which had required that "most stock transactions take place on the Big Board's floor", in effect freeing up trading for electronic methods.
In 1976, banks were allowed to buy and sell stocks, which provided more competition for stockbrokers.
Reforms had the effect of lowering prices overall, making it easier for more people to participate in the stock market.
Broker commissions for each stock sale lessened, but volume increased.

The Reagan years were marked by a renewed push for capitalism and business, with national efforts to de-regulate industries such as telecommunications and aviation.
The economy resumed upward growth after a period in the early 1980s of languishing.
A report in The New York Times described that the flushness of money and growth during these years had spawned a drug culture of sorts, with a rampant acceptance of cocaine use although the overall percent of actual users was most likely small.
A reporter wrote:
The Wall Street drug dealer looked like many other successful young female executives.
Stylishly dressed and wearing designer sunglasses, she sat in her 1983 Chevrolet Camaro in a no-parking zone across the street from the Marine Midland Bank branch on lower Broadway.
The customer in the passenger seat looked like a successful young businessman.
But as the dealer slipped him a heat-sealed plastic envelope of cocaine and he passed her cash, the transaction was being watched through the sunroof of her car by Federal drug agents in a nearby building.
And the customer — an undercover agent himself -was learning the ways, the wiles and the conventions of Wall Street's drug subculture.

— Peter Kerr in The New York Times, 1987.

In 1987, the stock market plunged and, in the relatively brief recession following, lower Manhattan lost 100,000 jobs according to one estimate.
Since telecommunications costs were coming down, banks and brokerage firms could move away from Wall Street to more affordable locations.
The recession of 1990–91 was marked by office vacancy rate
September 1929 was the peak of the stock market. October 3, 1929 was when the market started to slip, and it continued throughout the week of October 14.
In October 1929, renowned Yale economist Irving Fisher reassured worried investors that their "money was safe" on Wall Street. A few days later, on October 24, stock values plummeted. The stock market crash of 1929 ushered in the Great Depression, in which a quarter of working people were unemployed, with soup kitchens, mass foreclosures of farms, and falling prices. During this era, development of the Financial District stagnated, and Wall Street "paid a heavy price" and "became something of a backwater in American life".
During the New Deal years, as well as the 1940s, there was much less focus on Wall Street and finance. The government clamped down on the practice of buying equities based only on credit, but these policies began to ease. From 1946 to 1947, stocks could not be purchased "on margin", meaning that an investor had to pay 100% of a stock's cost without taking on any loans. However, this margin requirement was reduced four times before 1960, each time stimulating a mini-rally and boosting volume, and when the Federal Reserve reduced the margin requirements from 90% to 70%. These changes made it somewhat easier for investors to buy stocks on credit. The growing national economy and prosperity led to a recovery during the 1960s, with some down years during the early 1970s in the aftermath of the Vietnam War. Trading volumes climbed; in 1967, according to Time Magazine, volume hit 7.5 million shares a day which caused a "traffic jam" of paper with "batteries of clerks" working overtime to "clear transactions and update customer accounts".
In 1973, the financial community posted a collective loss of $245 million, which spurred temporary help from the government. Reforms were instituted; the SEC eliminated fixed commissions, which forced "brokers to compete freely with one another for investors' business". In 1975, the Securities & Exchange Commission threw out the NYSE's "Rule 394" which had required that "most stock transactions take place on the Big Board's floor", in effect freeing up trading for electronic methods. In 1976, banks were allowed to buy and sell stocks, which provided more competition for stockbrokers. Reforms had the effect of lowering prices overall, making it easier for more people to participate in the stock market. Broker commissions for each stock sale lessened, but volume increased.
The Reagan years were marked by a renewed push for capitalism and business, with national efforts to de-regulate industries such as telecommunications and aviation. The economy resumed upward growth after a period in the early 1980s of languishing. A report in The New York Times described that the flushness of money and growth during these years had spawned a drug culture of sorts, with a rampant acceptance of cocaine use although the overall percent of actual users was most likely small. A reporter wrote:
The Wall Street drug dealer looked like many other successful young female executives. Stylishly dressed and wearing designer sunglasses, she sat in her 1983 Chevrolet Camaro in a no-parking zone across the street from the Marine Midland Bank branch on lower Broadway. The customer in the passenger seat looked like a successful young businessman. But as the dealer slipped him a heat-sealed plastic envelope of cocaine and he passed her cash, the transaction was being watched through the sunroof of her car by Federal drug agents in a nearby building. And the customer — an undercover agent himself -was learning the ways, the wiles and the conventions of Wall Street's drug subculture.
— Peter Kerr in The New York Times, 1987.
In 1987, the stock market plunged and, in the relatively brief recession following, lower Manhattan lost 100,000 jobs according to one estimate. Since telecommunications costs were coming down, banks and brokerage firms could move away from Wall Street to more affordable locations. The recession of 1990–91 was marked by office vacancy rate
Wall Street