Source of capital gains WSJ Crossword Clue

Think of what fills a portfolio and has the potential to grow over time.

????? is a type of security that represents ownership in a corporation and constitutes a claim on part of the corporation's assets and earnings.

The term 'capital gains' refers to the profit from the sale of assets or investments, and '?????' is a common type of investment that can yield such profits. The word 'source' indicates where these gains originate, which is often through the buying and selling of ?????s in the market.

Keep full, as shelves, supply with goods, The "S" of N.Y.S.E.