Should I use equity or sell liquid investments to buy more places

[Stuart Dean]

I am purchasing a third duplex. the first two I put 25% down on, so have some equity there. I don't have enough cash on hand to put 25% on the third. I can sell some shares in investment accounts to fund the purchase, but I know will take a tax hit and am interested if anyone has a creative way they have financed purchases before.

Appreciate any advice.