Evidence before conviction
An investment idea should be supported by research, market evidence, valuation and source review. The strength of a view depends on the evidence behind it, including information that challenges the original case.
Research should distinguish observed facts from assumptions. A compelling explanation alone does not establish business quality, fair value or the likelihood of a catalyst.
Risk-aware judgment
Portfolio decisions should consider downside, liquidity, concentration and deterioration in the investment case. These considerations inform whether capital is committed, how a position is sized and when exposure may need to change.
The Investment Process and Risk Management pages explain these disciplines in more detail. Research and limits cannot guarantee an outcome or prevent loss.
A reviewable investment case
An investment view should set out its thesis, assumptions, material risks and reasons to reconsider or exit. A clear record helps distinguish a change in price from a change in the underlying case.
Accountability includes revisiting the reasoning as new evidence emerges. Confidence in an initial decision should not prevent reassessment.