Does the Early Exercise Rule Apply Equally to American-Style Put Options?

Yes, the early exercise rule applies to American-style put options, but the optimal exercise condition is different. It can be optimal to exercise an American put early, especially if it is deep in-the-money and interest rates are high, because exercising yields immediate cash that can be invested to earn interest.

Under What Circumstances Would It Be Optimal to Exercise an American Option Early?
Does the Wash Sale Rule Apply to Trading Exchange Traded Funds (ETFs)?
Does the Early Exercise Feature Apply to American-Style Put Options as Well?
Does the Presence of High Interest Rates Increase or Decrease the Value of the Early Exercise Feature?
Why Are European-Style Options Generally Simpler to Price than American-Style Options?
How Does the Prevailing Interest Rate Environment Affect the Early Exercise Decision for a Put Option?
How Does the Interest Rate Environment Affect the Decision to Early Exercise a Put Option?
Explain the Concept of ‘Put-Call Parity’ and How It Applies to European Options?

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