Overproduction in agriculture thanks to
technological progress and farmers struggled to
find alternative employment as demand couldn't keep up and profitability low
Fragmented weak banking system meant runs always likely
Buying on margin
This left investors very exposed when prices fell
Margin requirements only around 45%
Information assymetries
Poor regulation!
Laissez Fair approach from Republican government
Procyclical behaviour
Regulation on issuance of loans to major companies is argued to have encouraged excess equity investment by banks
Interest rates too low
Fueled credit bubble
Fisher (Debt deflation) (1933
Austrian School/Von misses
Asset price inflation
Reduces stock of sound investment opportunites
Lionel Robbins (1934)
Why were they too low?
Reliveing pressure on Sterling and other weak European currencies (Clarke 1967)
Disputed by Galbraith (1954) Fed did act by buying $400 million worth of government securities
Troubles in Europe
Complicated web of war repartions and
loans between Germany, France, Britain and
US
Irrational exuberance
Common stocks became "scarce" excess demand
No Stock issued in companies making
saltwater fresh like during South Sea
Bubble(Galbraith, 1954)
Market boom rooted in existing industries on the whole
Bubbles usually related to tech inovations
Investment decisions based on continuous growth of economy
Investments became increasingly risky and imprudent
Stock price growth growth massively exceed dividend growth in 1928 White (1990)
Mismatch between production and consumption
which led to falls in share prices
Dissapointing results posted on
Black Thursday (Oct 24)
Investors cash in profits
Reluctance of government to step in
to deflate bubble
Consequences of action
seemed almost as bad as
those from inaction
Gov wary of being labeled cause of the crisis
Noise trading with lots of investors with
little expertise in market place (Rappaport and White, 2009)
Investment banking operations started within
commericial banks through wholely owned securtiites
affiliates. Cross selling of investment products to retail customers who would not usually invest
Ex post irrational, ex
ante rational (De Long,
Sheifer )
Revisionists like Bierman - no evidence of unusually high PE ratio