New York, Jan 20, 2026, 19:41 EST — After-hours
Shares of Thermo Fisher Scientific Inc (TMO) closed Tuesday up 26 cents at $619.01 and showed little movement after hours, following the 4 p.m. close. The stock traded between $607.37 and $620.75 during the session, with roughly 3.1 million shares changing hands.
The quiet shift is still notable. As January enters its second half, markets are growing more jittery over trade policy and interest rates, with Thermo Fisher emerging as a key indicator for lab spending trends.
Traders are treating it as a steady gauge for now, not a headline grabber. The upcoming earnings report is near enough to keep attention, but not imminent enough to resolve much.
The broader market took a hit. Wall Street suffered its steepest daily decline in three months after President Donald Trump warned of new tariffs on imports from several European nations. The announcement sent investors scrambling toward safer bets, triggering a clear “risk-off” mood. “Not seeing indications investors were fleeing,” noted Jamie Cox, managing partner at Harris Financial Group. 1
Among Thermo Fisher’s peers, the declines stood out: Danaher slipped roughly 0.7%, Agilent dropped 2.7%, and Becton Dickinson was down 1.8% at the close.
Thermo Fisher plans to report its fourth-quarter and full-year 2025 earnings ahead of the market open on Jan. 29, followed by a conference call at 8:30 a.m. ET. 2
Investors will focus on the usual signals: order patterns for instruments and consumables, the mood around pharma and biotech customer budgets, and the company’s outlook on demand heading into 2026. It’s the guidance—not just the quarterly results—that’s expected to drive the next move.
The downside risk is straightforward. Should the tariff fears spark a prolonged spell of volatility, or if Thermo Fisher’s guidance comes in cautious, a stock that seemed defensive on Tuesday could still get caught up in the sell-off.
Looking ahead to the next session, all eyes are on whether the tariff story maintains momentum and how the initial earnings releases impact risk appetite. For Thermo Fisher, the key date is Jan. 29 at 8:30 a.m. ET, when its next major catalyst arrives. 3
