Thermo Fisher Scientific (TMO)
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Thermo Fisher Scientific (TMO) overview
Thermo Fisher Scientific is a leading supplier of laboratory instruments, reagents, and life-science services. It is a member of the S&P 500 and is classified in the Health Care sector — pharmaceutical, biotech, device and managed-care companies.
Thermo Fisher Scientific trades on the NYSE under the ticker symbol TMO. As of the most recent market data, the stock was priced around $617.10, down 0.82% on the session, giving Thermo Fisher Scientific a market capitalization of roughly $228.17B.
Over the past 52 weeks, TMO has traded between $435.27 and $647.00. Shares are valued at a trailing price-to-earnings (P/E) ratio of about 33.4, a common gauge of how richly the market prices the company's earnings. Thermo Fisher Scientific also pays a dividend, currently yielding around 30.00%.
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Why investors watch TMO
As one of the larger companies in the Health Care sector, Thermo Fisher Scientific is closely followed by investors and often moves with broader trends across pharmaceutical, biotech, device and managed-care companies. Traders watch TMO for earnings reports, analyst rating changes, and headlines that can shift sentiment — each of which is summarized on this page as it breaks.
Because the S&P 500 is weighted by market value, Thermo Fisher Scientific's size means its share-price moves can also nudge the index as a whole, making TMO a stock that even index investors pay attention to.
Market Mood
Latest TMO news

Thermo Fisher (TMO) CEO Marc Casper Sells $8.6M in Stock
Marc Casper, the chairman and CEO of Thermo Fisher Scientific Inc. (TMO), sold $8.6 million worth of company stock. This sale comes amidst ongoing trading activity by executives, which often attracts investor scrutiny. Significant stock sales by company leaders can influence market perceptions and investor confidence. Understanding these transactions helps investors assess potential impacts on Thermo Fisher's market performance.
Read More: Thermo Fisher (TMO) CEO Marc Casper Sells $8.6M in Stock
Thermo Fisher (TMO) CEO Casper sells $8.6M in stock options
Thermo Fisher Scientific CEO Marc Casper sold $8.6 million worth of stock and exercised options. This transaction involved the sale of approximately 39,000 shares at an average price of $220.61. Such stock sales can indicate a shift in management's confidence or financial strategy, potentially impacting investor sentiment. Transparency in insider transactions is crucial for investors considering the company's future performance. This matters for ordinary investors as CEO stock sales can influence market perceptions of company stability and growth potential.
Read More: Thermo Fisher (TMO) CEO Casper sells $8.6M in stock options
Thermo Fisher (TMO) Senior VP Lisa Britt Sells $3.39M in Shares
Lisa Britt, Senior Vice President at Thermo Fisher Scientific (TMO), sold $3.39 million worth of shares. This transaction indicates activity by a key executive within the company, which could influence investor perceptions. The sale's timing and amount might prompt analysis from market participants regarding the company's future performance and executive sentiment. Movements in insider trading can potentially impact stock prices and investor confidence.
Read More: Thermo Fisher (TMO) Senior VP Lisa Britt Sells $3.39M in Shares
Thermo Fisher Scientific Inc. (TMO) Form 144 Filed on May 27
Thermo Fisher Scientific Inc. (TMO) filed Form 144 on May 27 regarding the sale of shares. Form 144 is generally used by insiders to notify the SEC of their intent to sell shares. This filing can indicate potential stock movement, affecting investor perception. The specific number of shares or executives involved was not disclosed, but such events are monitored closely by market participants.
Read More: Thermo Fisher Scientific Inc. (TMO) Form 144 Filed on May 27More Health Care stocks
Frequently asked questions
Is Thermo Fisher Scientific in the S&P 500?
Yes. Thermo Fisher Scientific (TMO) is a member of the S&P 500 index, classified in the Health Care sector.
What sector is TMO in?
Thermo Fisher Scientific is classified in the Health Care sector of the S&P 500 — pharmaceutical, biotech, device and managed-care companies.
Where can I find the latest TMO news?
This page collects recent Thermo Fisher Scientific (TMO) news and market analysis, each article summarized by AI and tagged with bullish, bearish, or neutral sentiment.
What is Thermo Fisher Scientific's stock price?
As of the most recent market data, Thermo Fisher Scientific (TMO) traded at approximately $617.10. Prices move throughout the trading day, so this reflects the latest available quote rather than a live price.
What is Thermo Fisher Scientific's market cap?
Thermo Fisher Scientific has a market capitalization of roughly $228.17B, based on its most recent share price and shares outstanding.
What is TMO's P/E ratio?
TMO trades at a trailing price-to-earnings ratio of about 33.4. The P/E ratio compares a company's share price to its earnings per share.