Shares of IonQ slid another 4.2% to $49.76 on May 18, extending a pullback that has now erased most of last week's explosive post-earnings rally — raising a blunt question about whether Wall Street's enthusiasm for quantum computing has once again outrun the business fundamentals. IonQ's Post-Earnings Rally Unravels — Can a 755% Revenue Surge Justify a Stock That Still Burns Cash Faster Than It Grows?

Shares of IonQ dropped 4.2% to $49.76 on May 18, extending a sell-off that has now wiped out nearly all of the stock's post-earnings surge. The pullback raises a pointed question: even when a quantum computing company delivers a blowout quarter, is the underlying business big enough to support the hype?

• A Monster Quarter That Traders Have Already Priced In

IonQ posted Q1 revenue of $64.7 million, crushing analyst estimates of $49.7 million and the company's own guidance of $48–$51 million.

That figure represented 755% year-over-year growth and the company's fourth consecutive record quarter.

Management raised full-year guidance by $25 million to $260–$270 million and guided Q2 revenue to $65–$68 million, well above the $54.9 million Street estimate. But the stock had already rallied more than 19% between May 11 and May 14, meaning much of the good news was baked into the price before sellers arrived.

• The Backlog Is Growing, But Cash Is Leaving Faster

Remaining performance obligations — essentially the value of signed contracts yet to be fulfilled — hit $470 million, up 554% year-over-year. That gives IonQ rare revenue visibility for a quantum firm. The flip side: operating cash flow was negative $151 million in Q1, and management guided for a full-year adjusted EBITDA loss of $310–$330 million. The stock trades at roughly 138 times trailing sales — a valuation that demands near-flawless execution.

• Wall Street Is Split on What Comes Next

Morgan Stanley raised its price target to just $48.50 (below today's price) with a neutral rating, while JPMorgan moved to $50, also keeping a cautious stance.

On the bullish end, Jefferies holds an $85 target.

The full range spans $30 to $100 , reflecting deep disagreement over how to value a pre-profit company in a still-unproven industry.

• A Big Acquisition Looms in the Background

IonQ is sitting on $3.1 billion in cash and investments, and is in the process of acquiring SkyWater Technology, a U.S.-based chip manufacturer, with the deal expected to close in Q2 or Q3.

SkyWater shareholders have already approved the merger. If it closes, IonQ would control its own chip fabrication — potentially cutting costs long-term but adding integration risk in the near term. For now, the stock is caught between a genuinely impressive growth story and a valuation that leaves zero room for stumbles.