The third week in March is shaping up to be a busy one for tech.

Shares of King Digital Entertainment (KING), the mobile game maker of the popular Candy Crush, started  trading today for the very first time but below an IPO price of $22.50 a share which valued the company at  $7.1 billion. In early trading shares were down about 8% at $20.70.

Related: Facebook turns 10: "The most important tech company of the past decade”

Facebook (FB) announced it's buying virtual reality firm Oculus VR for $2 billion--$400 million in cash plus stock--just five weeks after it announced a $19 billion acquisition of WhatsApp. Oculus makes virtual reality goggles used to play video games, but Facebook CEO Mark Zuckerberg said Tuesday he plans to expand its platform to include education, medicine and more.

Related: Paranoia is the Key to Success: Inc. Magazine’s Entrepreneur of the Year

Finally, Box Inc., a cloud storage company, announced Monday plans to raise $250 million through an IPO. Unlike King Digital, which had profits of more than half a billion dollars last year, Box has been operating at a growing deficit despite increasing revenues.

Could we be on the verge of another tech bubble?

Related: Candy Crush crash coming? Publisher reveals revenue decline

"Don't insult the real bubble of the 1990s," says Henry Blodget, though he admits "some valuations are breathtaking," like King's. Its "numbers are already shrinking," says Blodget. "I don't know anyone who plays Candy Crush anymore."

There are no current numbers for Oculus. Its virtual reality headset is available only as a prototype for developers and not for sale to consumers. "This is as speculative as you can get," says Blodget. This acquisition is unlike Facebook's other recent buys: $1 billion for Instagram, a company with 100 million users and $19 billion for WhatsApp with 450 million users (growing at a rate of 1 million users a day).

Most people have never used the Oculus virtual reality headset but those "who have tried it say it's mind-blowing," says Blodget. Still, he warns, "there's a very good chance that this thing is worth zero in two years."

Want to find out more about the Oculus headset and other tech advances that could make investors money? Watch the video above. Tell us what you think on Facebook or Twitter, @DailyTicker.

More from The Daily Ticker

How an Arizona teen turned her jewelry passion into a multimillion-dollar business

China heading toward a debt crisis with global ramifications: Banking vet

'Stay invested, markets are going higher' says David Kotok