When to Exit a Position: A Framework for Selling Stocks

Knowing when to sell is harder than knowing when to buy, and that is where most gains leak away. Give it the holding, your average cost, the current price and your original thesis, and it runs a structured exit check: is the thesis still standing or quietly broken, is the price ahead of fair value, and is the position too big. Hold, trim or out, with reasons.

I hold {STOCK_OR_FUND} at an average cost of {AVERAGE_COST} and the current price is {CURRENT_PRICE}. My original investment thesis was: {ORIGINAL_THESIS}. Help me decide whether to hold, trim, or exit. Apply a structured exit framework covering: whether the original thesis is still intact or has been invalidated, valuation versus fair value and what it would take for the stock to re-rate, position sizing relative to my portfolio and concentration limits, tax-loss harvesting or gains deferral considerations given {TAX_SITUATION}, and the behavioural traps I need to avoid: anchoring to cost price, loss aversion, and the sunk cost fallacy. Give me a final recommendation with a decision tree I can reuse for future exits.