Term: Adding to your Position

Adding to your position means buying more of a stock (or other instrument) you already own, so that your total holding in that trade grows beyond your original entry. It can also apply to short positions, where "adding" means selling more shares short. The result is a single, larger position made up of two or more separate purchases (or sales) at different prices and possibly different times.

The mechanics are simple: if you bought 100 shares at $50 and later buy another 100 at $48, you now hold 200 shares with an average cost of $49. Your broker's platform will typically show this blended average price, not the two trades separately. From that point on, your profit or loss is measured against the $49 average, not against either original price alone.

The nuance that trips people up is the difference between adding to a winner and adding to a loser. Buying more shares as a stock moves in your favor (sometimes called scaling in or pyramiding) is a different decision than buying more shares because the price dropped and you want a better average cost (often called averaging down). The original glossary text described only the second case, and it's worth being precise: averaging down does not "increase your profits," it lowers the price at which you break even, and it also increases your total dollar risk if the stock keeps falling. Whether that's a sound choice depends entirely on why the price moved and how much capital and risk tolerance you have — it is not automatically a good technique.

Traders also distinguish adding to a position from starting a new, separate trade in the same stock. Some platforms let you track multiple entries as distinct lots for tax or record-keeping purposes even though economically they behave as one combined position.