Morgan Stanley restarted online travel coverage Wednesday and did something more useful than a simple ratings shuffle: it laid out a concrete, verifiable test for which platforms will win the AI era of travel search. The verdict favors Booking Holdings (BKNG) and, to a lesser degree, Airbnb (ABNB). Expedia (EXPE) comes out the other end with a fresh Underweight and a $235 price target that implies roughly 20% additional downside from where it traded before the note landed.
The core evidence is engagement. Expedia’s monthly active user growth slowed to 0% in Q2 2026, compared with 6% at Booking.com and 10% at Airbnb during the same period. That gap matters far beyond one quarter. In a world where AI tools are increasingly the front door to travel discovery, platforms that are already losing the attention competition start at a structural disadvantage before a single AI booking is made.
Morgan Stanley argued that Expedia’s valuation discount relative to Booking Holdings had narrowed substantially over the past 12 months without a corresponding improvement in fundamentals to justify the compression. The discount closed for the wrong reasons, leaving investors with a multiple that no longer adequately prices the weaker asset mix. That is the harder problem. A stock can recover from a bad quarter. Recovering from a valuation that has been reset closer to peer levels while the underlying engagement diverges is a slower, more uncertain climb.
Morgan Stanley also underscored concerns about the composition of Expedia’s supply. The company’s inventory is concentrated in chain hotels and air travel, categories viewed as more commoditized and increasingly vulnerable to disruption from AI-powered travel tools. Within the bank’s framework for consumer supply differentiation, this mix placed Expedia at the weakest end of the competitive spectrum.
Booking’s case for its premium rests on structural advantages that are harder to replicate quickly. Morgan Stanley pointed to about 4.7 million properties and a direct booking mix in the mid-60% range. Fragmented, independent supply is precisely what AI discovery surfaces well. Booking’s inventory is better matched to the way consumers will increasingly search. Airbnb was assumed at Equal Weight with a $170 target, while Booking was assumed at Overweight with a $230 target. The gap between the two reflects Morgan Stanley’s view that Airbnb’s differentiation is real but already priced in.
For investors holding EXPE, the question is what a credible recovery looks like. The company showed resilience in travel demand, reporting Q2 revenue up 14% year-over-year. CEO Ariane Gorin pushed back on analyst caution with the numbers themselves, noting on the Q2 2026 earnings call that the company exceeded the high end of both top and bottom-line expectations for the fifth consecutive quarter. Execution has been real. The problem is that strong financials have not translated into the user growth that would justify holding the stock at closer to Booking’s multiple.
Expedia would need to demonstrate a genuine reversal in monthly active user trends, a more differentiated supply mix, and evidence that its AI product investments are converting into engagement rather than just features on a roadmap. Until those data points shift, the valuation argument Morgan Stanley makes is difficult to dismiss.
Wealth Builder Takeaway: The OTA sector as a whole is not the issue here. Morgan Stanley projects global online travel bookings to grow at roughly a 7% compound annual rate between 2026 and 2030. The sector tailwind is not in dispute; the argument is about which platforms are best positioned to capture an outsized share. Investors who want travel exposure without carrying Expedia’s re-engagement risk have a clear path through BKNG. Those already holding EXPE should watch Q3 monthly active user data above all else. That is the number Morgan Stanley built its case on, and it is the number that will determine when, or whether, the discount is warranted.
Rising Star Stocks