Thermo Fisher Scientific Inc. closed at $678.63 on September 25, 2026, adding 1.97% in the most recent 24-hour trading period. The life sciences and laboratory equipment company carried a market capitalization of $245.99 billion at the close.
Over the past seven days, TMO shares have risen 3.03%, building on momentum that has taken the stock up 8.03% over the trailing 30-day period. The broader monthly advance reflects a sustained run of buying interest in the name.
The combination of near-term and medium-term gains positions TMO among the more consistent performers in its sector over the measured timeframe. The stock's 30-day appreciation of more than eight percent represents a notable move for a large-cap name of this size.
At current levels, Thermo Fisher Scientific's market capitalization stands at approximately $246 billion, underscoring its status as one of the larger companies by valuation in the broader healthcare and scientific instrumentation space.



