This is important.

Using leverage in investing is risky. Leverage should be used to de-risk a portfolio, not increase risk.

The old adage holds true here: Do not put all of your eggs in the same basket

When using leverage, borrowing against your portfolio to buy more equities is not that bright of an idea. Markets are correlated, this is already a huge problem for non-leveraged investors but for the leveraged investor this can be an expensive mistake. By using leverage to buy more of the same, you are increasing exposure to that asset class.

When borrowing against a basket of equities, the money should be used to purchase something outside of the market, for example real estate, precious metals, tools, business activities, etc.