NEW YORK (

TheStreet

) -- A solid

Cyber Monday

gave tech stocks a nice jump start to the week, with Internet giant

Amazon

(AMZN) - Get Amazon.com, Inc. Report

setting the tone.

Amazon's Black Friday sales increased 13% year-over-year, and

eBay's

(EBAY) - Get eBay Inc. Report

PayPal

,

Google's

(GOOG) - Get Alphabet Inc. Class C Report

revamped product search site and

GSI Commerce

( GSIC), an online sales system provider, all enjoyed a rich slice of the Black Friday action, said ThinkEquity's review of the e-commerce numbers.

In other Amazon news, the company announced Thursday that it

invested $175 million

in daily deal site

LivingSocial

, a rival of online discounter -- and previously rumored Google target --

Groupon

.

Shares of Amazon closed down 85 cents, or 0.48% at $175.68 on Friday.

Despite the weekend's uptick in online shopping, shares of eBay

fell Monday

after analyst firm Stifel Nicolaus downgraded the company amid valuation concerns. Stifel analyst Jordan Rohan changed his eBay rating from buy to hold, citing lack of upward earnings momentum and competition from the free shipping offered by the likes of Amazon. The analyst also voiced his concern about margins in eBay's PayPal business.

eBay's stock closed down 30 cents, or 1%, at $29.61 at the end of play on Friday.

The rumor mill surrounding a Google acquisition of

Groupon

went into overdrive this week with

talk of a possible $6 billion deal

-- Google's largest, ever.

But after chatter

TheStreet Recommends

pushed Google shares down Tuesday

, a news site affiliated with the

Chicago Tribune

reported that

Groupon rejected the offer

, preferring instead to stay independent and mull an IPO.

Also circulating around Google was the European Commission's

decision to open an investigation

into allegations that Google has been abusing its dominant position in online search.

The move comes after a preliminary probe launched earlier this year following complaints from three European Internet companies. The European Commission, the EU's executive body, confirmed Tuesday that it will investigate whether Google lowered the ranking of unpaid search results of competing services.

Google's shares nonetheless closed up $1.18, or 0.21%, at $573 on Friday.

Tech giant

IBM

(IBM) - Get International Business Machines (IBM) Report

unveiled a new form of chip technology

Tuesday, which the company claims will pave the way to smaller, faster and more power-efficient processors.

The

new chip technology

, which goes by the catchy name of CMOS Integrated Silicon Nanophotonics, combines both electrical and optical components on the same piece of silicon. This lets chips communicate using pulses of light, as opposed to traditional electrical impulses, according to the tech giant.

IBM shares closed up 20 cents, or 0.14%, at $145.38 on Friday.

Verizon

(VZ) - Get Verizon Communications Inc. Report

is set to launch

its long-anticipated 4G wireless network Sunday. Billing it as "the world's largest" LTE network, Verizon will offer the faster service in 38 U.S. cities. Subscribers will be sold $99 wireless modems to connect to a data-only network that Verizon says is up to 10 times the speed of its 3G service.

Verizon shares closed up 16 cents, or 0.49%, at $32.90 on Friday.

Analyst firm Pacific Crest raised its

Apple

(AAPL) - Get Apple Inc. (AAPL) Report

estimates during the week, as tech watchers get set for the introduction of both a Verizon iPhone and the iPhone 5. "The likely launch of a CDMA iPhone on Verizon in Q2 prompts us to raise our second-quarter iPhone unit estimate to 15.2 million from 12.0 million," said analyst Andy Hargreaves in a note Friday.

The analyst firm, which expects to see a Verizon iPhone prior to the end of March, also raised its full year iPhone estimate from 54.1 million units to 59.9 million units.

Apple's stock closed down 71 cents, or 0.22%, at $317.44 on Friday.

--Written by James Rogers in New York.

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