Shine corporate plunging. How to apply theory to the state of affairs?

Shine Corporate slashes earnings guidance, shares plunge 73%.

About this article. what theory can i apply to the situation?

Public Interest Theory
Capture Theory
Private Interest Theory
Efficient Market Hypothesis
Legitimacy Theory
Stakeholder Theory
Positive Accounting Theory – opportunistic perspective OR efficiency perspective
Political Cost Hypothesis
Management Bonus Hypothesis - opportunistic perspective AND/OR efficiency perspective
Debt Hypothesis - opportunistic perspective AND/OR efficiency perspective