Booking Holdings stock extends September slide after blocked ETraveli deal

Published on 09/21/2026 at 22:42 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Booking Holdings stock closed at USD 167.90 on Nasdaq on September 18, 2026, down 21.6 percent from the start of the year. The shares remain pressured after a European court upheld the veto of the USD 1.9 billion ETraveli acquisition on September 9, 2026.

Bauhaus-Poster mit geometrischen Formen, Primärfarben und großem TRAVEL-Text — Booking Holdings Inc. als geometrisches Bauhaus-Poster mit TRAVEL-Schriftzug in leuchtenden Primärfarben US09857L1089, Illustration mit AI erstellt.

Booking Holdings stock (ISIN US09857L1089) finished at USD 167.90 on Nasdaq on September 18, 2026, representing a 21.6 percent decline from its level at the start of 2026 and underscoring persistent investor caution around regulatory headwinds and the travel sector.

Regulatory setback weighs on sentiment

According to Tickeron on September 21, 2026, Booking Holdings shares fell from USD 209.62 on August 21, 2026, to USD 167.90 at the September 18, 2026 close, a drop of roughly 19.9 percent over 30 days.

The sharpest move came after the European General Court upheld the European Commission’s decision to block Booking Holdings’ planned USD 1.9 billion acquisition of flight-booking company ETraveli on September 9, 2026, removing a strategic growth avenue and reinforcing antitrust scrutiny in online travel.

Stock performance and volatility in September

Per data shown by MarketBeat, Booking Holdings closed at USD 167.90 on Nasdaq on September 18, 2026, down 1.54 percent on the day from the prior close, with the shares also down 21.6 percent year to date from USD 214.21 at the beginning of 2026.

Another snapshot from Schaeffers Research on September 21, 2026, shows the stock trading intraday around USD 168.43, leaving it close to its late-June levels and reflecting ongoing volatility as traders adjust positions following the regulatory ruling.

Recent quarterly figures provide support

The same Tickeron analysis highlights that Booking Holdings delivered solid second-quarter 2026 results, with room nights increasing 5 percent and gross bookings rising 9 percent compared with the prior year quarter, while adjusted earnings per share climbed 15 percent year on year in Q2 2026.

Tickeron also notes that management issued cautious guidance for Q3 2026, which, together with sector-wide pressure and concerns about AI-driven disruption in online travel, contributed to the share-price weakness despite the robust Q2 trajectory.

Options activity and trader positioning

As reported by Schaeffers Research on September 21, 2026, options trading in Booking Holdings has been active, with around 33,000 call contracts and 34,000 put contracts changing hands, roughly 10 times the average intraday rate.

Schaeffers Research points out that the October 150 put and October 170 call contracts are seeing the most attention, signaling that traders are positioning for either a further downside test or a recovery toward the USD 170 region in the weeks ahead.

Stock level and investor perspective

Based on the Nasdaq closing data reflected by MarketBeat, Booking Holdings stock stood at USD 167.90 on September 18, 2026, on Nasdaq, which is markedly below its early-August multi-month high near USD 215 referenced by Tickeron and highlights the impact that the blocked ETraveli acquisition and cautious sector sentiment have had on the shares.