Maplebear Inc (CART  ), better known as Instacart, made its public debut on Tuesday. The stock opened for trading well above its initial public offering price, which may be a gift for those who were able to get in early.

What To Know: Instacart priced its IPO at $30 per share late Monday, which was at the top end of the expected range.

Before landing on $30, the grocery delivery platform company on Friday raised the proposed range for its IPO from $26 to $28 per share to a new range of $28 to $30 per share, representing a valuation of up to $10 billion. Shares opened for trading Tuesday at $42, implying an approximate valuation of $14 billion - about 40% above its IPO pricing.

Instacart has been waiting to go public for a while now. The company was valued at $39 billion in its last funding round following a boom in business driven by the pandemic in which sales jumped approximately 590%.

Why It Matters: Ritholtz Wealth Management's Josh Brown believes Instacart investors would be smart to sell on the pop.

"If you were lucky enough to get in on the IPO ... I would take the profit," Brown said Tuesday afternoon on CNBC's "Fast Money Halftime Report."

"Most of the people that have an opinion on this stock have not read the S1. I have - they're going to let employees sell as much as 35% of their stock as soon as November because this has been pent-up on the runway for so long."

Brown expects there to be a lot of selling pressure in the name in the short term and with the stock surging on its debut, it looks like a good time to take profit, he said.

CART Price Action: At its highs of the day, Instacart shares were up about 43%, but the stock has trended lower in early afternoon trading. At the time of publication, Instacart shares were up 26.67% at $38.01, per Benzinga Pro.