Fig 1.
Flowchart for our study.
Table 1.
Key indicators involved.
Fig 2.
General trends for large tech stock price.
(a) Stock price trend for Amazon. (b) Stock price trend for Apple. (c) Stock price trend for Google. (d) Stock price trend for Meta. (d) Stock price trend for Microsoft. (e) Stock price trend for Nvidia. (g) Stock price trend for Tesla.
Fig 3.
Excess return, momentum and volume under individual states for large tech stocks.
(a) Box plots for large tech stocks excess return. (b) Box plots for large tech stocks return momentum. (c) Box plots for large tech stocks volume.
Fig 4.
Principal components under individual states for large tech stocks.
(a) Box plots for principal component values for Amazon. (b) Box plots for principal component values for Apple. (c) Box plots for principal component values for Google. (d) Box plots for principal component values for Meta. (d) Box plots for principal component values for Microsoft. (e) Box plots for principal component values for Nvidia. (g) Box plots for principal component values for Tesla.
Table 2.
Summary statistics for large tech stocks close price.
Table 3.
Variable correlation matrix for large tech stocks.
Table 4.
Regression output for large tech stocks.
Table 5.
Regression output for individual tech sector stocks.