On its first day as a public company, Twitter commands a market capitalization that places it among the largest technology firms.

Investors are valuing Twitter’s equity at about $25.4 billion, as of mid-afternoon. The shares have climbed about 80 percent from the initial public offering price.

The stock prices of other technology companies have fallen today, largely outpacing a decline in the Standard & Poor’s 500-stock index.

Twitter’s valuation is now roughly on par with that of LinkedIn, an older social network that caters to the business community. LinkedIn’s market capitalization is currently about $25.4 billion, with the stock having fallen about 3.6 percent today.

Shares of Groupon, the daily deals company, have fallen about 3.5 percent today, giving the company a market capitalization of about $6.4 billion.

But Twitter is far behind Facebook, which currently has a market value of about $116.6 billion, having fallen 2.3 percent today.

And it’s a long way from Google, which has a market value of about $338.6 billion. Google’s stock has fallen about 1 percent today.