Favorable Results and Improved Guidance Lifted Thermo Fisher Scientific (TMO) in Q3

Group 1: Market Overview - The S&P 500 Index experienced a significant surge in Q3 2025, driven by investor optimism due to expectations of monetary easing, strong consumer demand, and solid corporate earnings [1] - The Parnassus Core Equity Fund (Investor Shares) returned 2.57% in Q3 2025, underperforming the S&P 500 Index, which returned 8.12% [1] - Year-to-date, the fund's return was 9.89%, compared to 14.83% for the S&P 500 Index [1] Group 2: Company Focus - Thermo Fisher Scientific Inc. - Thermo Fisher Scientific Inc. (NYSE:TMO) is highlighted as a key stock in the Parnassus Core Equity Fund's Q3 2025 investor letter, offering a range of life sciences solutions and services [2][3] - The stock of Thermo Fisher Scientific Inc. had a one-month return of -3.69% but gained 8.83% over the last 52 weeks, closing at $575.70 per share with a market capitalization of $216.3 billion on December 22, 2025 [2] - The company recovered from being oversold earlier in the year, supported by favorable financial results and guidance that exceeded expectations [3] Group 3: Investment Sentiment - Thermo Fisher Scientific Inc. ranked 26th on the list of the 30 Most Popular Stocks Among Hedge Funds, with 121 hedge fund portfolios holding the stock at the end of Q3 2025, an increase from 117 in the previous quarter [3] - While acknowledging the potential of Thermo Fisher Scientific Inc. as an investment, the company believes that certain AI stocks may offer greater upside potential and carry less downside risk [3]