A person who knows a lot about technology companies, named Stephen Bersey, said that he thinks a company called Cisco Systems is doing well and people should buy its stock. This made the price of the stock go up. Other people who know a lot about different companies also said they think some other companies are doing well and people should buy their stocks too. This made the prices of those stocks go up as well. Read from source...

- The article does not provide any specific details about the analyst's rating changes or the reasons behind them. It only mentions the stocks and the ratings changes, without explaining the rationale or the performance of the stocks.
- The article uses vague and generic terms to describe the analyst's upgrades, such as "positive outlook", "bullish", "top 5 upgrades", without providing any concrete evidence or data to support these claims.
- The article

Bullish
Article's Key Points:
- Cisco analyst turns bullish and upgrades CSCO to Buy
- NIKE, Teradyne, Microchip and Illumina also upgraded by other analysts
- CSCO shares gained 6.8%, NIKE shares gained 5.1%, Teradyne shares gained 5.2%, Microchip shares gained 4.1% and Illumina shares gained 5.3% after upgrades

Summary:
The article reports on several analyst upgrades for various stocks, including Cisco, NIKE, Teradyne, Microchip and Illumina. The upgrades were mostly positive for the stocks, as they saw gains ranging from 4.1% to 6.8% after the announcement. The article has a bullish sentiment, as it highlights the positive outlook from the analysts and the resulting gains for the investors.