A key principle of economics is: Sunk costs are irrelevant. You bought the stock at 147 and it has now fallen to 144. That's too bad. This has nothing to do with whether it is wise or foolish to buy shares at 144. The only relevant thing to consider is: Do I expect the stock to go up or down from 144?
You have lost $3 per share on the original buy. Buying more shares will not "reduce your loss" in any way.
Suppose you bought 100 shares at 147. The price then drops to 144. You have lost $3 per share, or $300 total.
You buy another 50 more shares at 144. The price stays at 144. So your average purchase price is now (147 x 100 + 144 x 50) / 150 = 146. So I guess you could say that your "average loss per share" is now only $2. But it's $2 x 150 shares instead of $3 x 100 shares. You still lost $300. You didn't reduce your loss by a penny. Maybe it made you feel better that you reduced your average loss per share, but this is just an arithmetic game.
Read full article from How should I decide whether to buy more shares of a stock when its price drops? - Personal Finance & Money Stack Exchange
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